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Radovanović, Filip

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  • Radovanović, Filip (51)
  • Radovanovic, Philip (1)

Author's Bibliography

Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties

Janićijević, Željko; Vujčić, Ivica; Veljović, Đorđe; Vujisić, Miloš; Radovanović, Filip

(Elsevier, 2020)

TY  - JOUR
AU  - Janićijević, Željko
AU  - Vujčić, Ivica
AU  - Veljović, Đorđe
AU  - Vujisić, Miloš
AU  - Radovanović, Filip
PY  - 2020
UR  - http://www.sciencedirect.com/science/article/pii/S0969806X19301380
UR  - http://dais.sanu.ac.rs/123456789/6943
AB  - Composite hydrogels capable of controlled drug delivery via ion exchange are an interesting group of materials for the construction of implantable drug reservoirs for electrically charged drugs. In this study, we synthesized composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) (PLGA-PAA) hydrogels by sequential application of UV or gamma irradiation and traditional phase inversion. Physicochemical properties of the composite PLGA-PAA hydrogels were investigated using Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). We examined the ion exchange capacity (IEC) and swelling behavior of these materials to determine their potential as drug reservoirs. Composite PLGA-PAA hydrogel synthesized using UV irradiation (UV-PLGA-PAA) exhibited a porous microstructure with submicron-sized hydrogel-rich aggregates and homogeneous chemical composition. Swelling behavior and IEC of this material were highly reproducible. Composite PLGA-PAA hydrogels synthesized using gamma irradiation (G-PLGA-PAAs) had a less uniform microstructure with larger pores and micron-sized hydrogel-rich aggregates while exhibiting rather inhomogeneous chemical composition. These materials showed superior swelling properties, but a more variable IEC, compared to the material fabricated using UV irradiation. Results of DSC analysis showed a dose-dependent decrease in glass transition temperature for G-PLGA-PAAs indicating the effects of PLGA chain scission. Our findings indicate that gamma irradiation is a possible alternative to UV irradiation in the synthesis of composite PLGA-PAA hydrogels which can modify or control important material properties. However, the synthesis protocol using gamma irradiation should be further optimized to improve the IEC reproducibility. In our future research, we will investigate the in vitro release of charged drugs from synthesized composite PLGA-PAA hydrogels under physiological conditions.
PB  - Elsevier
T2  - Radiation Physics and Chemistry
T1  - Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties
SP  - 108466
VL  - 166
DO  - 10.1016/j.radphyschem.2019.108466
ER  - 
@article{
author = "Janićijević, Željko and Vujčić, Ivica and Veljović, Đorđe and Vujisić, Miloš and Radovanović, Filip",
year = "2020",
url = "http://www.sciencedirect.com/science/article/pii/S0969806X19301380, http://dais.sanu.ac.rs/123456789/6943",
abstract = "Composite hydrogels capable of controlled drug delivery via ion exchange are an interesting group of materials for the construction of implantable drug reservoirs for electrically charged drugs. In this study, we synthesized composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) (PLGA-PAA) hydrogels by sequential application of UV or gamma irradiation and traditional phase inversion. Physicochemical properties of the composite PLGA-PAA hydrogels were investigated using Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). We examined the ion exchange capacity (IEC) and swelling behavior of these materials to determine their potential as drug reservoirs. Composite PLGA-PAA hydrogel synthesized using UV irradiation (UV-PLGA-PAA) exhibited a porous microstructure with submicron-sized hydrogel-rich aggregates and homogeneous chemical composition. Swelling behavior and IEC of this material were highly reproducible. Composite PLGA-PAA hydrogels synthesized using gamma irradiation (G-PLGA-PAAs) had a less uniform microstructure with larger pores and micron-sized hydrogel-rich aggregates while exhibiting rather inhomogeneous chemical composition. These materials showed superior swelling properties, but a more variable IEC, compared to the material fabricated using UV irradiation. Results of DSC analysis showed a dose-dependent decrease in glass transition temperature for G-PLGA-PAAs indicating the effects of PLGA chain scission. Our findings indicate that gamma irradiation is a possible alternative to UV irradiation in the synthesis of composite PLGA-PAA hydrogels which can modify or control important material properties. However, the synthesis protocol using gamma irradiation should be further optimized to improve the IEC reproducibility. In our future research, we will investigate the in vitro release of charged drugs from synthesized composite PLGA-PAA hydrogels under physiological conditions.",
publisher = "Elsevier",
journal = "Radiation Physics and Chemistry",
title = "Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties",
pages = "108466",
volume = "166",
doi = "10.1016/j.radphyschem.2019.108466"
}
Janićijević, Ž., Vujčić, I., Veljović, Đ., Vujisić, M.,& Radovanović, F. (2020). Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties.
Radiation Physics and ChemistryElsevier., 166, 108466. 
https://doi.org/10.1016/j.radphyschem.2019.108466
Janićijević Ž, Vujčić I, Veljović Đ, Vujisić M, Radovanović F. Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties. Radiation Physics and Chemistry. 2020;166:108466

Supplementary data for the article: Janićijević, Ž., Vujčić, I., Veljović, Đ., Vujisić, M., Radovanović, F., 2020. Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties. Radiation Physics and Chemistry 166, 108466. https://doi.org/10.1016/j.radphyschem.2019.108466

Janićijević, Željko; Vujčić, Ivica; Veljović, Đorđe; Vujisić, Miloš; Radovanović, Filip

(2020)

TY  - BOOK
AU  - Janićijević, Željko
AU  - Vujčić, Ivica
AU  - Veljović, Đorđe
AU  - Vujisić, Miloš
AU  - Radovanović, Filip
PY  - 2020
UR  - http://dais.sanu.ac.rs/123456789/6944
AB  - Composite hydrogels capable of controlled drug delivery via ion exchange are an interesting group of materials for the construction of implantable drug reservoirs for electrically charged drugs. In this study, we synthesized composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) (PLGA-PAA) hydrogels by sequential application of UV or gamma irradiation and traditional phase inversion. Physicochemical properties of the composite PLGA-PAA hydrogels were investigated using Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). We examined the ion exchange capacity (IEC) and swelling behavior of these materials to determine their potential as drug reservoirs. Composite PLGA-PAA hydrogel synthesized using UV irradiation (UV-PLGA-PAA) exhibited a porous microstructure with submicron-sized hydrogel-rich aggregates and homogeneous chemical composition. Swelling behavior and IEC of this material were highly reproducible. Composite PLGA-PAA hydrogels synthesized using gamma irradiation (G-PLGA-PAAs) had a less uniform microstructure with larger pores and micron-sized hydrogel-rich aggregates while exhibiting rather inhomogeneous chemical composition. These materials showed superior swelling properties, but a more variable IEC, compared to the material fabricated using UV irradiation. Results of DSC analysis showed a dose-dependent decrease in glass transition temperature for G-PLGA-PAAs indicating the effects of PLGA chain scission. Our findings indicate that gamma irradiation is a possible alternative to UV irradiation in the synthesis of composite PLGA-PAA hydrogels which can modify or control important material properties. However, the synthesis protocol using gamma irradiation should be further optimized to improve the IEC reproducibility. In our future research, we will investigate the in vitro release of charged drugs from synthesized composite PLGA-PAA hydrogels under physiological conditions.
T2  - Radiation Physics and Chemistry
T1  - Supplementary data for the article: Janićijević, Ž., Vujčić, I., Veljović, Đ., Vujisić, M., Radovanović, F., 2020. Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties. Radiation Physics and Chemistry 166, 108466. https://doi.org/10.1016/j.radphyschem.2019.108466
VL  - 166
ER  - 
@misc{
author = "Janićijević, Željko and Vujčić, Ivica and Veljović, Đorđe and Vujisić, Miloš and Radovanović, Filip",
year = "2020",
url = "http://dais.sanu.ac.rs/123456789/6944",
abstract = "Composite hydrogels capable of controlled drug delivery via ion exchange are an interesting group of materials for the construction of implantable drug reservoirs for electrically charged drugs. In this study, we synthesized composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) (PLGA-PAA) hydrogels by sequential application of UV or gamma irradiation and traditional phase inversion. Physicochemical properties of the composite PLGA-PAA hydrogels were investigated using Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). We examined the ion exchange capacity (IEC) and swelling behavior of these materials to determine their potential as drug reservoirs. Composite PLGA-PAA hydrogel synthesized using UV irradiation (UV-PLGA-PAA) exhibited a porous microstructure with submicron-sized hydrogel-rich aggregates and homogeneous chemical composition. Swelling behavior and IEC of this material were highly reproducible. Composite PLGA-PAA hydrogels synthesized using gamma irradiation (G-PLGA-PAAs) had a less uniform microstructure with larger pores and micron-sized hydrogel-rich aggregates while exhibiting rather inhomogeneous chemical composition. These materials showed superior swelling properties, but a more variable IEC, compared to the material fabricated using UV irradiation. Results of DSC analysis showed a dose-dependent decrease in glass transition temperature for G-PLGA-PAAs indicating the effects of PLGA chain scission. Our findings indicate that gamma irradiation is a possible alternative to UV irradiation in the synthesis of composite PLGA-PAA hydrogels which can modify or control important material properties. However, the synthesis protocol using gamma irradiation should be further optimized to improve the IEC reproducibility. In our future research, we will investigate the in vitro release of charged drugs from synthesized composite PLGA-PAA hydrogels under physiological conditions.",
journal = "Radiation Physics and Chemistry",
title = "Supplementary data for the article: Janićijević, Ž., Vujčić, I., Veljović, Đ., Vujisić, M., Radovanović, F., 2020. Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties. Radiation Physics and Chemistry 166, 108466. https://doi.org/10.1016/j.radphyschem.2019.108466",
volume = "166"
}
Janićijević, Ž., Vujčić, I., Veljović, Đ., Vujisić, M.,& Radovanović, F. (2020). Supplementary data for the article: Janićijević, Ž., Vujčić, I., Veljović, Đ., Vujisić, M., Radovanović, F., 2020. Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties. Radiation Physics and Chemistry 166, 108466. https://doi.org/10.1016/j.radphyschem.2019.108466.
Radiation Physics and Chemistry, 166. 
Janićijević Ž, Vujčić I, Veljović Đ, Vujisić M, Radovanović F. Supplementary data for the article: Janićijević, Ž., Vujčić, I., Veljović, Đ., Vujisić, M., Radovanović, F., 2020. Composite poly(DL-lactide-co-glycolide)/poly(acrylic acid) hydrogels synthesized using UV and gamma irradiation: comparison of material properties. Radiation Physics and Chemistry 166, 108466. https://doi.org/10.1016/j.radphyschem.2019.108466. Radiation Physics and Chemistry. 2020;166

Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs

Janićijević, Željko; Ninkov, Marina; Kataranovski, Milena; Radovanović, Filip

(Wiley, 2019)

TY  - JOUR
AU  - Janićijević, Željko
AU  - Ninkov, Marina
AU  - Kataranovski, Milena
AU  - Radovanović, Filip
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/5253
AB  - Poly(DL-lactide-co-ε-caprolactone)/poly(acrylic acid) implantable composite reservoirs for cationic drugs are synthesized by sequentially applying photoirradiation and liquid phase inversion. The chemical composition and microstructure of reservoirs are characterized with Fourier transform infrared spectroscopy-attenuated total reflection (FTIR-ATR) and scanning electron microscopy (SEM), respectively. Drug loading and release properties are investigated using methylene blue as the drug model. Biocompatibility of reservoirs is examined through a series of in vitro tests and an in vivo experiment of subcutaneous implantation in Dark Agouti rats. Reservoirs show good ion-exchange capacity, high water content, and fast reversible swelling with retained geometry. Results of drug loading and release reveal excellent loading efficiency and diffusion-controlled release during 2 weeks. Biocompatibility tests in vitro demonstrate the lack of implant proinflammatory potential and hindered adhesion of L929 cells on the implant surface. Implants exhibit low acute toxicity and elicit a normal acute foreign body reaction that reaches the early stages of fibrous capsule formation after 7 days. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PB  - Wiley
T2  - Macromolecular Bioscience
T1  - Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs
SP  - 1800322
VL  - 19
DO  - 10.1002/mabi.201800322
ER  - 
@article{
author = "Janićijević, Željko and Ninkov, Marina and Kataranovski, Milena and Radovanović, Filip",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/5253",
abstract = "Poly(DL-lactide-co-ε-caprolactone)/poly(acrylic acid) implantable composite reservoirs for cationic drugs are synthesized by sequentially applying photoirradiation and liquid phase inversion. The chemical composition and microstructure of reservoirs are characterized with Fourier transform infrared spectroscopy-attenuated total reflection (FTIR-ATR) and scanning electron microscopy (SEM), respectively. Drug loading and release properties are investigated using methylene blue as the drug model. Biocompatibility of reservoirs is examined through a series of in vitro tests and an in vivo experiment of subcutaneous implantation in Dark Agouti rats. Reservoirs show good ion-exchange capacity, high water content, and fast reversible swelling with retained geometry. Results of drug loading and release reveal excellent loading efficiency and diffusion-controlled release during 2 weeks. Biocompatibility tests in vitro demonstrate the lack of implant proinflammatory potential and hindered adhesion of L929 cells on the implant surface. Implants exhibit low acute toxicity and elicit a normal acute foreign body reaction that reaches the early stages of fibrous capsule formation after 7 days. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
publisher = "Wiley",
journal = "Macromolecular Bioscience",
title = "Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs",
pages = "1800322",
volume = "19",
doi = "10.1002/mabi.201800322"
}
Janićijević, Ž., Ninkov, M., Kataranovski, M.,& Radovanović, F. (2019). Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs.
Macromolecular BioscienceWiley., 19, 1800322. 
https://doi.org/10.1002/mabi.201800322
Janićijević Ž, Ninkov M, Kataranovski M, Radovanović F. Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs. Macromolecular Bioscience. 2019;19:1800322
6
5
5

Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs

Janićijević, Željko; Ninkov, Marina; Kataranovski, Milena; Radovanović, Filip

(Wiley, 2019)

TY  - JOUR
AU  - Janićijević, Željko
AU  - Ninkov, Marina
AU  - Kataranovski, Milena
AU  - Radovanović, Filip
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/4714
AB  - Poly(DL-lactide-co-ε-caprolactone)/poly(acrylic acid) implantable composite reservoirs for cationic drugs are synthesized by sequentially applying photoirradiation and liquid phase inversion. The chemical composition and microstructure of reservoirs are characterized with Fourier transform infrared spectroscopy-attenuated total reflection (FTIR-ATR) and scanning electron microscopy (SEM), respectively. Drug loading and release properties are investigated using methylene blue as the drug model. Biocompatibility of reservoirs is examined through a series of in vitro tests and an in vivo experiment of subcutaneous implantation in Dark Agouti rats. Reservoirs show good ion-exchange capacity, high water content, and fast reversible swelling with retained geometry. Results of drug loading and release reveal excellent loading efficiency and diffusion-controlled release during 2 weeks. Biocompatibility tests in vitro demonstrate the lack of implant proinflammatory potential and hindered adhesion of L929 cells on the implant surface. Implants exhibit low acute toxicity and elicit a normal acute foreign body reaction that reaches the early stages of fibrous capsule formation after 7 days. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PB  - Wiley
T2  - Macromolecular Bioscience
T1  - Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs
SP  - 1800322
VL  - 19
DO  - 10.1002/mabi.201800322
ER  - 
@article{
author = "Janićijević, Željko and Ninkov, Marina and Kataranovski, Milena and Radovanović, Filip",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/4714",
abstract = "Poly(DL-lactide-co-ε-caprolactone)/poly(acrylic acid) implantable composite reservoirs for cationic drugs are synthesized by sequentially applying photoirradiation and liquid phase inversion. The chemical composition and microstructure of reservoirs are characterized with Fourier transform infrared spectroscopy-attenuated total reflection (FTIR-ATR) and scanning electron microscopy (SEM), respectively. Drug loading and release properties are investigated using methylene blue as the drug model. Biocompatibility of reservoirs is examined through a series of in vitro tests and an in vivo experiment of subcutaneous implantation in Dark Agouti rats. Reservoirs show good ion-exchange capacity, high water content, and fast reversible swelling with retained geometry. Results of drug loading and release reveal excellent loading efficiency and diffusion-controlled release during 2 weeks. Biocompatibility tests in vitro demonstrate the lack of implant proinflammatory potential and hindered adhesion of L929 cells on the implant surface. Implants exhibit low acute toxicity and elicit a normal acute foreign body reaction that reaches the early stages of fibrous capsule formation after 7 days. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
publisher = "Wiley",
journal = "Macromolecular Bioscience",
title = "Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs",
pages = "1800322",
volume = "19",
doi = "10.1002/mabi.201800322"
}
Janićijević, Ž., Ninkov, M., Kataranovski, M.,& Radovanović, F. (2019). Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs.
Macromolecular BioscienceWiley., 19, 1800322. 
https://doi.org/10.1002/mabi.201800322
Janićijević Ž, Ninkov M, Kataranovski M, Radovanović F. Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs. Macromolecular Bioscience. 2019;19:1800322
6
5
6

Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations

Janićijević, Željko; Radovanović, Filip

(Elsevier, 2018)

TY  - JOUR
AU  - Janićijević, Željko
AU  - Radovanović, Filip
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3391
AB  - We present the innovative synthesis of polyethersulfone/poly(acrylic acid) composite hydrogel membranes
performed by combining photoirradiation with a traditional liquid phase inversion process.
Fabricated membranes exhibited ion exchange capacity and water content as high as 5.2 mmol/g and
75%, respectively. The chemical composition of the membranes was determined using FTIR-ATR and their
microstructure was examined with SEM. Our findings suggest that the use of hydrophilic crosslinker was
crucial for the synthesis of symmetric and mechanically stable composite hydrogel membranes. Passive
and iontophoretic release kinetics from membrane reservoirs synthesized with the hydrophilic crosslinker
were investigated in vitro using methylene blue as a model drug. Passive release kinetics was
diffusion-controlled with pH-sensitive and loading-dependent behavior. Linear release kinetics was
demonstrated during the iontophoretic release. Synthesized composite hydrogel membranes hold a lot of
promise as compact stand-alone reservoirs for passive and iontophoretic delivery of cationic drugs.
PB  - Elsevier
T2  - Polymer
T1  - Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations
SP  - 56
EP  - 66
VL  - 147
DO  - 10.1016/j.polymer.2018.05.065
ER  - 
@article{
author = "Janićijević, Željko and Radovanović, Filip",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3391",
abstract = "We present the innovative synthesis of polyethersulfone/poly(acrylic acid) composite hydrogel membranes
performed by combining photoirradiation with a traditional liquid phase inversion process.
Fabricated membranes exhibited ion exchange capacity and water content as high as 5.2 mmol/g and
75%, respectively. The chemical composition of the membranes was determined using FTIR-ATR and their
microstructure was examined with SEM. Our findings suggest that the use of hydrophilic crosslinker was
crucial for the synthesis of symmetric and mechanically stable composite hydrogel membranes. Passive
and iontophoretic release kinetics from membrane reservoirs synthesized with the hydrophilic crosslinker
were investigated in vitro using methylene blue as a model drug. Passive release kinetics was
diffusion-controlled with pH-sensitive and loading-dependent behavior. Linear release kinetics was
demonstrated during the iontophoretic release. Synthesized composite hydrogel membranes hold a lot of
promise as compact stand-alone reservoirs for passive and iontophoretic delivery of cationic drugs.",
publisher = "Elsevier",
journal = "Polymer",
title = "Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations",
pages = "56-66",
volume = "147",
doi = "10.1016/j.polymer.2018.05.065"
}
Janićijević, Ž.,& Radovanović, F. (2018). Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations.
PolymerElsevier., 147, 56-66. 
https://doi.org/10.1016/j.polymer.2018.05.065
Janićijević Ž, Radovanović F. Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations. Polymer. 2018;147:56-66
5
4
5

Comparative properties of composite poly(lactic-co-glycolic acid)/poly(acrylic acid) implants synthesized using ultraviolet and gamma irradiation

Janićijević, Željko; Vujčić, Ivica T.; Vujisić, Miloš Lj.; Radovanović, Filip

(Belgrade : Institute of Technical Sciences of SASA, 2018)

TY  - CONF
AU  - Janićijević, Željko
AU  - Vujčić, Ivica T.
AU  - Vujisić, Miloš Lj.
AU  - Radovanović, Filip
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4720
AB  - Composite implants comprising a biodegradable hydrophobic polymer matrix and crosslinked hydrogel with fixed ion exchange groups are promising materials for the construction of controlled drug delivery systems. Poly(lactic-co-glycolic acid)/poly(acrylic acid) (PLGA/PAA) composite implants in our study were synthesized using the sequential application of irradiation and immersion precipitation. Precursor solutions with all functional components were dispensed into a disc-shaped non-stick mold and cured either by ultraviolet (UV) or gamma irradiation. Cured disks were subsequently immersed in the phosphate buffer saline bath to finalize phase separation and solidification of the implants. The synthesized implants were characterized by FTIR-ATR and DSC, and their basic properties such as ion exchange capacity, swelling degree, and swelling kinetics were examined. Synthesis using gamma irradiation resulted in implants with similar ion exchange capacity, but the greater swelling degree and faster swelling kinetics compared to the implants prepared with UV irradiation. Gamma irradiation also resulted in altered and less homogeneous chemical composition compared to the implants synthesized with UV irradiation. Further investigations are required to determine the differences in drug release kinetics and degradation behavior of the synthesized implants.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
T1  - Comparative properties of composite poly(lactic-co-glycolic acid)/poly(acrylic acid) implants synthesized using ultraviolet and gamma irradiation
SP  - 28
EP  - 28
ER  - 
@conference{
author = "Janićijević, Željko and Vujčić, Ivica T. and Vujisić, Miloš Lj. and Radovanović, Filip",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4720",
abstract = "Composite implants comprising a biodegradable hydrophobic polymer matrix and crosslinked hydrogel with fixed ion exchange groups are promising materials for the construction of controlled drug delivery systems. Poly(lactic-co-glycolic acid)/poly(acrylic acid) (PLGA/PAA) composite implants in our study were synthesized using the sequential application of irradiation and immersion precipitation. Precursor solutions with all functional components were dispensed into a disc-shaped non-stick mold and cured either by ultraviolet (UV) or gamma irradiation. Cured disks were subsequently immersed in the phosphate buffer saline bath to finalize phase separation and solidification of the implants. The synthesized implants were characterized by FTIR-ATR and DSC, and their basic properties such as ion exchange capacity, swelling degree, and swelling kinetics were examined. Synthesis using gamma irradiation resulted in implants with similar ion exchange capacity, but the greater swelling degree and faster swelling kinetics compared to the implants prepared with UV irradiation. Gamma irradiation also resulted in altered and less homogeneous chemical composition compared to the implants synthesized with UV irradiation. Further investigations are required to determine the differences in drug release kinetics and degradation behavior of the synthesized implants.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia",
title = "Comparative properties of composite poly(lactic-co-glycolic acid)/poly(acrylic acid) implants synthesized using ultraviolet and gamma irradiation",
pages = "28-28"
}
Janićijević, Ž., Vujčić, I. T., Vujisić, M. Lj.,& Radovanović, F. (2018). Comparative properties of composite poly(lactic-co-glycolic acid)/poly(acrylic acid) implants synthesized using ultraviolet and gamma irradiation.
Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, SerbiaBelgrade : Institute of Technical Sciences of SASA., null, 28-28. 
Janićijević Ž, Vujčić IT, Vujisić ML, Radovanović F. Comparative properties of composite poly(lactic-co-glycolic acid)/poly(acrylic acid) implants synthesized using ultraviolet and gamma irradiation. Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia. 2018;:28-28

Supplementary information: Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations

Janićijević, Željko; Radovanović, Filip

(Elsevier, 2018)

TY  - BOOK
AU  - Janićijević, Željko
AU  - Radovanović, Filip
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3392
AB  - Supplementary information. The graphical representations of release kinetics fitting by the Korsmeyer-Peppas and Weber-Morris equations are provided. Masses of released methylene blue under different experimental conditions are given in a separate table. Estimation of membrane pore size at pH = 8 was performed using the gel correlation length model. (PDF).
PB  - Elsevier
T2  - Polymer
T1  - Supplementary information: Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations
VL  - 147
ER  - 
@misc{
author = "Janićijević, Željko and Radovanović, Filip",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3392",
abstract = "Supplementary information. The graphical representations of release kinetics fitting by the Korsmeyer-Peppas and Weber-Morris equations are provided. Masses of released methylene blue under different experimental conditions are given in a separate table. Estimation of membrane pore size at pH = 8 was performed using the gel correlation length model. (PDF).",
publisher = "Elsevier",
journal = "Polymer",
title = "Supplementary information: Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations",
volume = "147"
}
Janićijević, Ž.,& Radovanović, F. (2018). Supplementary information: Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations.
PolymerElsevier., 147. 
Janićijević Ž, Radovanović F. Supplementary information: Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations. Polymer. 2018;147

Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations

Janićijević, Željko; Radovanović, Filip

(Elsevier, 2018)

TY  - JOUR
AU  - Janićijević, Željko
AU  - Radovanović, Filip
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4526
AB  - We present the innovative synthesis of polyethersulfone/poly(acrylic acid) composite hydrogel membranesperformed by combining photoirradiation with a traditional liquid phase inversion process.Fabricated membranes exhibited ion exchange capacity and water content as high as 5.2 mmol/g and75%, respectively. The chemical composition of the membranes was determined using FTIR-ATR and theirmicrostructure was examined with SEM. Our findings suggest that the use of hydrophilic crosslinker wascrucial for the synthesis of symmetric and mechanically stable composite hydrogel membranes. Passiveand iontophoretic release kinetics from membrane reservoirs synthesized with the hydrophilic crosslinkerwere investigated in vitro using methylene blue as a model drug. Passive release kinetics wasdiffusion-controlled with pH-sensitive and loading-dependent behavior. Linear release kinetics wasdemonstrated during the iontophoretic release. Synthesized composite hydrogel membranes hold a lot ofpromise as compact stand-alone reservoirs for passive and iontophoretic delivery of cationic drugs.
PB  - Elsevier
T2  - Polymer
T1  - Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations
SP  - 56
EP  - 66
VL  - 147
DO  - 10.1016/j.polymer.2018.05.065
ER  - 
@article{
author = "Janićijević, Željko and Radovanović, Filip",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4526",
abstract = "We present the innovative synthesis of polyethersulfone/poly(acrylic acid) composite hydrogel membranesperformed by combining photoirradiation with a traditional liquid phase inversion process.Fabricated membranes exhibited ion exchange capacity and water content as high as 5.2 mmol/g and75%, respectively. The chemical composition of the membranes was determined using FTIR-ATR and theirmicrostructure was examined with SEM. Our findings suggest that the use of hydrophilic crosslinker wascrucial for the synthesis of symmetric and mechanically stable composite hydrogel membranes. Passiveand iontophoretic release kinetics from membrane reservoirs synthesized with the hydrophilic crosslinkerwere investigated in vitro using methylene blue as a model drug. Passive release kinetics wasdiffusion-controlled with pH-sensitive and loading-dependent behavior. Linear release kinetics wasdemonstrated during the iontophoretic release. Synthesized composite hydrogel membranes hold a lot ofpromise as compact stand-alone reservoirs for passive and iontophoretic delivery of cationic drugs.",
publisher = "Elsevier",
journal = "Polymer",
title = "Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations",
pages = "56-66",
volume = "147",
doi = "10.1016/j.polymer.2018.05.065"
}
Janićijević, Ž.,& Radovanović, F. (2018). Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations.
PolymerElsevier., 147, 56-66. 
https://doi.org/10.1016/j.polymer.2018.05.065
Janićijević Ž, Radovanović F. Polyethersulfone/poly(acrylic acid) composite hydrogel membrane reservoirs for controlled delivery of cationic drug formulations. Polymer. 2018;147:56-66
5
4
5

Applicability of the lean concept to the management of small-scale manufacturing enterprises in Serbia

Vorkapić, Miloš; Radovanović, Filip; Ćoćkalo, Dragan; Đorđević, Dejan

(2017)

TY  - JOUR
AU  - Vorkapić, Miloš
AU  - Radovanović, Filip
AU  - Ćoćkalo, Dragan
AU  - Đorđević, Dejan
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/776
AB  - Lean management (LM) is a set of procedures and principles used in industrial processes for finding and eliminating useless activities. This paper presents the analysis of business practices in small-scale manufacturing enterprises in Serbia in comparison with defined LM principles. The aim of this study was to determine differences between the business practices in small and micro enterprises (SMEs) in Serbia and LM standards in order to provide recommendations for improving business performance and production. Application of LM standards to reduce waste and optimize production in SMEs in Serbia has not been investigated before, although this practice has been successfully used in neighboring countries, such as Slovenia, Romania and Macedonia. The importance of this new approach is directly related to the benefits that can be achieved to improve business practices in SMEs in Serbia. This study shows that enterprises lack a system which ensures that the customer gets a quality product on time, the optimization of production and resources are limited, standard procedures are not sufficiently implemented in micro enterprises, and a significant difference exists between job requirements and skills of the employees. The recommendations to improve operations in accordance with the LM principles include introduction of a monitoring and control system to ensure timely delivery and customer satisfaction, tools introduction such as 5S, Value Stream Mapping (VSM), inventory management, and Kaizen as a philosophy of continuous improvement.
T2  - Tehnički vjesnik
T1  - Applicability of the lean concept to the management of small-scale manufacturing enterprises in Serbia
SP  - 1929
SP  - 1934
EP  - 1934
VL  - 24
IS  - 6
DO  - 10.17559/TV-20150807194942
ER  - 
@article{
author = "Vorkapić, Miloš and Radovanović, Filip and Ćoćkalo, Dragan and Đorđević, Dejan",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/776",
abstract = "Lean management (LM) is a set of procedures and principles used in industrial processes for finding and eliminating useless activities. This paper presents the analysis of business practices in small-scale manufacturing enterprises in Serbia in comparison with defined LM principles. The aim of this study was to determine differences between the business practices in small and micro enterprises (SMEs) in Serbia and LM standards in order to provide recommendations for improving business performance and production. Application of LM standards to reduce waste and optimize production in SMEs in Serbia has not been investigated before, although this practice has been successfully used in neighboring countries, such as Slovenia, Romania and Macedonia. The importance of this new approach is directly related to the benefits that can be achieved to improve business practices in SMEs in Serbia. This study shows that enterprises lack a system which ensures that the customer gets a quality product on time, the optimization of production and resources are limited, standard procedures are not sufficiently implemented in micro enterprises, and a significant difference exists between job requirements and skills of the employees. The recommendations to improve operations in accordance with the LM principles include introduction of a monitoring and control system to ensure timely delivery and customer satisfaction, tools introduction such as 5S, Value Stream Mapping (VSM), inventory management, and Kaizen as a philosophy of continuous improvement.",
journal = "Tehnički vjesnik",
title = "Applicability of the lean concept to the management of small-scale manufacturing enterprises in Serbia",
pages = "1929-1934-1934",
volume = "24",
number = "6",
doi = "10.17559/TV-20150807194942"
}
Vorkapić, M., Radovanović, F., Ćoćkalo, D.,& Đorđević, D. (2017). Applicability of the lean concept to the management of small-scale manufacturing enterprises in Serbia.
Tehnički vjesnik, 24(6), 1929-1934. 
https://doi.org/10.17559/TV-20150807194942
Vorkapić M, Radovanović F, Ćoćkalo D, Đorđević D. Applicability of the lean concept to the management of small-scale manufacturing enterprises in Serbia. Tehnički vjesnik. 2017;24(6):1929-1934
1
2
4

Biodegradable polymer/hydrogel composite for controlled delivery of cationic formulations

Janićijević, Željko; Ninkov, Marina; Kataranovski, Marina; Radovanović, Filip

(Belgrade : Institute of Technical Sciences of SASA, 2017)

TY  - CONF
AU  - Janićijević, Željko
AU  - Ninkov, Marina
AU  - Kataranovski, Marina
AU  - Radovanović, Filip
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/15452
AB  - Composites of biodegradable polymers and hydrogels are promising materials for controlled delivery systems with prolonged drug release. In this contribution, we present an innovative implant design comprising poly(DL-lactide-co-ε-caprolactone) copolymer base and a crosslinked poly(acrylic acid) hydrogel. Implants were prepared in the form of disks using the modified traditional liquid phase inversion process. Solutions containing all implant precursors were dispensed into transparent non-stick molds and cured by UV irradiation. UV curing was followed by immersion into the phosphate buffer solution bath to achieve phase separation and solidification. Structure and composition of the implant were characterized using SEM and FTIR. Obtained implants exhibited high loading capacity for cationic formulations and a moderate degree of swelling. Studies of implant loading and subsequent release of methylene blue into the phosphate-buffered saline demonstrated diffusioncontrolled delivery kinetics over a period of several weeks. To assess biocompatibility of implants as possible materials for drug delivery systems in mammals, we evaluated their effects on viability (Trypan blue exclusion assay), metabolic activity, proliferation (MTT assay) and priming (nitric oxide/NO production) of freshly isolated rat splenocytes during 24 h and 48 h of cultivation. The viability was unaltered, metabolic activity/proliferation was increased after 48 h and the decrease of NO production, as well as drop in responsiveness to cell mitogen concanavalin A (ConA) in cells on implants were observed. These results suggest that implants could be used as a suitable material for drug delivery systems, but their capacity to stimulate cell proliferation and their immunosuppressive potential deserve further investigations.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, Serbia
T1  - Biodegradable polymer/hydrogel composite for controlled delivery of cationic formulations
SP  - 9
EP  - 9
ER  - 
@conference{
author = "Janićijević, Željko and Ninkov, Marina and Kataranovski, Marina and Radovanović, Filip",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/15452",
abstract = "Composites of biodegradable polymers and hydrogels are promising materials for controlled delivery systems with prolonged drug release. In this contribution, we present an innovative implant design comprising poly(DL-lactide-co-ε-caprolactone) copolymer base and a crosslinked poly(acrylic acid) hydrogel. Implants were prepared in the form of disks using the modified traditional liquid phase inversion process. Solutions containing all implant precursors were dispensed into transparent non-stick molds and cured by UV irradiation. UV curing was followed by immersion into the phosphate buffer solution bath to achieve phase separation and solidification. Structure and composition of the implant were characterized using SEM and FTIR. Obtained implants exhibited high loading capacity for cationic formulations and a moderate degree of swelling. Studies of implant loading and subsequent release of methylene blue into the phosphate-buffered saline demonstrated diffusioncontrolled delivery kinetics over a period of several weeks. To assess biocompatibility of implants as possible materials for drug delivery systems in mammals, we evaluated their effects on viability (Trypan blue exclusion assay), metabolic activity, proliferation (MTT assay) and priming (nitric oxide/NO production) of freshly isolated rat splenocytes during 24 h and 48 h of cultivation. The viability was unaltered, metabolic activity/proliferation was increased after 48 h and the decrease of NO production, as well as drop in responsiveness to cell mitogen concanavalin A (ConA) in cells on implants were observed. These results suggest that implants could be used as a suitable material for drug delivery systems, but their capacity to stimulate cell proliferation and their immunosuppressive potential deserve further investigations.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, Serbia",
title = "Biodegradable polymer/hydrogel composite for controlled delivery of cationic formulations",
pages = "9-9"
}
Janićijević, Ž., Ninkov, M., Kataranovski, M.,& Radovanović, F. (2017). Biodegradable polymer/hydrogel composite for controlled delivery of cationic formulations.
Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, SerbiaBelgrade : Institute of Technical Sciences of SASA., null, 9-9. 
Janićijević Ž, Ninkov M, Kataranovski M, Radovanović F. Biodegradable polymer/hydrogel composite for controlled delivery of cationic formulations. Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, Serbia. 2017;:9-9

pH-sensitive membranes with crosslinked poly(acrylic acid) hydrogel for controlled delivery

Janićijević, Željko; Radovanović, Filip

(Belgrade : Institute of Technical Sciences of SASA, 2016)

TY  - CONF
AU  - Janićijević, Željko
AU  - Radovanović, Filip
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/887
AB  - Polymeric pH-sensitive membranes and hydrogels are interesting materials for the controlled delivery of chemical agents triggered by external stimuli. In this contribution, we present a novel membrane design consisting of a polyethersulfone polymeric base and a crosslinked poly(acrylic acid) hydrogel containing pH-responsive carboxyl groups. Membranes were prepared using the modified traditional liquid phase inversion process. Solutions containing all membrane precursors were cast on a glass plate and cured by UV irradiation. UV curing was followed by immersion into the water bath to achieve phase separation and solidification. Obtained membranes exhibited high ion-exchange capacity and a moderate swelling degree dependent on the crosslinker properties. Studies of membrane loading with methylene blue and subsequent release of methylene blue from the membrane into the alkaline and acidic buffered solutions demonstrated pH-dependent delivery kinetics.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade
T1  - pH-sensitive membranes with crosslinked poly(acrylic acid) hydrogel for controlled delivery
SP  - 55
EP  - 55
ER  - 
@conference{
author = "Janićijević, Željko and Radovanović, Filip",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/887",
abstract = "Polymeric pH-sensitive membranes and hydrogels are interesting materials for the controlled delivery of chemical agents triggered by external stimuli. In this contribution, we present a novel membrane design consisting of a polyethersulfone polymeric base and a crosslinked poly(acrylic acid) hydrogel containing pH-responsive carboxyl groups. Membranes were prepared using the modified traditional liquid phase inversion process. Solutions containing all membrane precursors were cast on a glass plate and cured by UV irradiation. UV curing was followed by immersion into the water bath to achieve phase separation and solidification. Obtained membranes exhibited high ion-exchange capacity and a moderate swelling degree dependent on the crosslinker properties. Studies of membrane loading with methylene blue and subsequent release of methylene blue from the membrane into the alkaline and acidic buffered solutions demonstrated pH-dependent delivery kinetics.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade",
title = "pH-sensitive membranes with crosslinked poly(acrylic acid) hydrogel for controlled delivery",
pages = "55-55"
}
Janićijević, Ž.,& Radovanović, F. (2016). pH-sensitive membranes with crosslinked poly(acrylic acid) hydrogel for controlled delivery.
Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, BelgradeBelgrade : Institute of Technical Sciences of SASA., null, 55-55. 
Janićijević Ž, Radovanović F. pH-sensitive membranes with crosslinked poly(acrylic acid) hydrogel for controlled delivery. Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade. 2016;:55-55

Preparation of NdFeB Magnetic Nanoparticles by Surfactant-Assisted High Energy Ball Milling

Lamovec, Jelena; Jović, Vesna; Radovanović, Filip; Ranđelović, Danijela; Radulović, Katarina; Jakšić, Zoran; Vasiljević Radović, Dana

(Belgrade : Materials Research Society of Serbia, 2015)

TY  - CONF
AU  - Lamovec, Jelena
AU  - Jović, Vesna
AU  - Radovanović, Filip
AU  - Ranđelović, Danijela
AU  - Radulović, Katarina
AU  - Jakšić, Zoran
AU  - Vasiljević Radović, Dana
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/804
AB  - Improved permanent magnets are essential for emergent applications in electronic and electric devices. Different attempts have been made to produce nanoscale anisotropic rare-earth magnetic powder based on Nd-Fe-B material. Recently, high energy surfactant assisted ball milling has been proven to be an effective technique to produce anisotropic hard magnetic Nd-Fe-B nanoparticles. In this paper we are presenting our experimental results on high energy ball milling in planetary mill "Puverisette 7 premium line" from "Fritsch". Except milling material, there are several variables which influence the milling process for the selected mill type. They are: mechanical properties of the milling media material (bowls, balls, etc.), ball-to-powder ratio (BPR), extent of filling of the milling bowl, milling atmosphere, milling speed and duration, and type of solution and surfactant for wet milling. We are going to give influence of all these parameters on obtained NdFeB magnetic materials with nanosized dimensions starting from Nd2Fe14B HDD (Hydrogenated Disproportionated Desorbed) material. 

Acknowledgements: This work is funded by FP7 project MAG-DRIVE: "New permanent magnets for electric-vehicle drive applications", grant agreement no: 605348.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Seventeenth Annual Conference YUCOMAT 2015, Aug 31-Sep 04, 2015, Herceg Novi, Montenegro, Programme and the Book of Abstracts
T1  - Preparation of NdFeB Magnetic Nanoparticles by Surfactant-Assisted High Energy Ball Milling
SP  - 66
EP  - 66
ER  - 
@conference{
author = "Lamovec, Jelena and Jović, Vesna and Radovanović, Filip and Ranđelović, Danijela and Radulović, Katarina and Jakšić, Zoran and Vasiljević Radović, Dana",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/804",
abstract = "Improved permanent magnets are essential for emergent applications in electronic and electric devices. Different attempts have been made to produce nanoscale anisotropic rare-earth magnetic powder based on Nd-Fe-B material. Recently, high energy surfactant assisted ball milling has been proven to be an effective technique to produce anisotropic hard magnetic Nd-Fe-B nanoparticles. In this paper we are presenting our experimental results on high energy ball milling in planetary mill "Puverisette 7 premium line" from "Fritsch". Except milling material, there are several variables which influence the milling process for the selected mill type. They are: mechanical properties of the milling media material (bowls, balls, etc.), ball-to-powder ratio (BPR), extent of filling of the milling bowl, milling atmosphere, milling speed and duration, and type of solution and surfactant for wet milling. We are going to give influence of all these parameters on obtained NdFeB magnetic materials with nanosized dimensions starting from Nd2Fe14B HDD (Hydrogenated Disproportionated Desorbed) material. 

Acknowledgements: This work is funded by FP7 project MAG-DRIVE: "New permanent magnets for electric-vehicle drive applications", grant agreement no: 605348.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Seventeenth Annual Conference YUCOMAT 2015, Aug 31-Sep 04, 2015, Herceg Novi, Montenegro, Programme and the Book of Abstracts",
title = "Preparation of NdFeB Magnetic Nanoparticles by Surfactant-Assisted High Energy Ball Milling",
pages = "66-66"
}
Lamovec, J., Jović, V., Radovanović, F., Ranđelović, D., Radulović, K., Jakšić, Z.,& Vasiljević Radović, D. (2015). Preparation of NdFeB Magnetic Nanoparticles by Surfactant-Assisted High Energy Ball Milling.
Seventeenth Annual Conference YUCOMAT 2015, Aug 31-Sep 04, 2015, Herceg Novi, Montenegro, Programme and the Book of AbstractsBelgrade : Materials Research Society of Serbia., null, 66-66. 
Lamovec J, Jović V, Radovanović F, Ranđelović D, Radulović K, Jakšić Z, Vasiljević Radović D. Preparation of NdFeB Magnetic Nanoparticles by Surfactant-Assisted High Energy Ball Milling. Seventeenth Annual Conference YUCOMAT 2015, Aug 31-Sep 04, 2015, Herceg Novi, Montenegro, Programme and the Book of Abstracts. 2015;:66-66

Asimetrična porozna membrana sa epoksidnim prstenovima

Radovanović, Filip; Nastasović, Aleksandra; Nešić, Aleksandra; Veličković, Sava

(2015)

TY  - BOOK
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra
AU  - Nešić, Aleksandra
AU  - Veličković, Sava
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/807
AB  - Pronalazak se odnosi na asimetričnu poroznu membranu sa epoksidnim prstenovima. Ovakva membrana se može dobiti pojednostavljenim postupkom koji izbegava mnoge dodatne operacije u cilju funkcionalizacije postojećih asimetričnih membrana. Po tom postupku homogeni rastvor za polimerizaciju koji obuhvata reaktivnu komponentu sa epoksidnim prstenovima, umreživač, staklasti polimer i rastvarač, oblikuje se u određenu formu, izloži izvoru zračenja u cilju polimerizacije i umrežavanja reaktivnih komponenata i potopi u koagulaciono kupatilo u kome se pomenuta membrana konačno formira. Epoksidni prstenovi se jednostavnim hemijskim reakcijama mogu konvertovati u željene funkcionalne grupe i takve membrane se mogu koristiti za čitav niz separacionih procesa, kao što su ultrafiltracija, membranska adsorpcija za hemijske ili biohemijske primene, ili u sklopu senzora zasnovanih na membranama i tankim filmovima.
AB  - The invention herewith described refers to the asymmetric porous membrane with epoxide rings. Such membrane can be prepared using a simplified method which omits many additional steps carried out in order to functionalize existing asymmetric membranes. According to this method a homogeneous polymerizable solution comprising a reactive component with epoxide rings, a crosslinker, a glassy polymer, and a solvent, is formed into a shaped article, exposed to a source of irradiation to polymerize and crosslink the reactive components, and immersed into a coagulation bath to form said membrane.; Epoxide rings can be converted into desired functional groups using simple chemical reactions and such membranes can be utilized for a broad range of separation processes including ultrafiltration, membrane adsorption for chemical or biochemical applications, or in sensing devices based on membranes and thin films.
T1  - Asimetrična porozna membrana sa epoksidnim prstenovima
ER  - 
@BOOK{
author = "Radovanović, Filip and Nastasović, Aleksandra and Nešić, Aleksandra and Veličković, Sava",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/807",
abstract = "Pronalazak se odnosi na asimetričnu poroznu membranu sa epoksidnim prstenovima. Ovakva membrana se može dobiti pojednostavljenim postupkom koji izbegava mnoge dodatne operacije u cilju funkcionalizacije postojećih asimetričnih membrana. Po tom postupku homogeni rastvor za polimerizaciju koji obuhvata reaktivnu komponentu sa epoksidnim prstenovima, umreživač, staklasti polimer i rastvarač, oblikuje se u određenu formu, izloži izvoru zračenja u cilju polimerizacije i umrežavanja reaktivnih komponenata i potopi u koagulaciono kupatilo u kome se pomenuta membrana konačno formira. Epoksidni prstenovi se jednostavnim hemijskim reakcijama mogu konvertovati u željene funkcionalne grupe i takve membrane se mogu koristiti za čitav niz separacionih procesa, kao što su ultrafiltracija, membranska adsorpcija za hemijske ili biohemijske primene, ili u sklopu senzora zasnovanih na membranama i tankim filmovima., The invention herewith described refers to the asymmetric porous membrane with epoxide rings. Such membrane can be prepared using a simplified method which omits many additional steps carried out in order to functionalize existing asymmetric membranes. According to this method a homogeneous polymerizable solution comprising a reactive component with epoxide rings, a crosslinker, a glassy polymer, and a solvent, is formed into a shaped article, exposed to a source of irradiation to polymerize and crosslink the reactive components, and immersed into a coagulation bath to form said membrane.; Epoxide rings can be converted into desired functional groups using simple chemical reactions and such membranes can be utilized for a broad range of separation processes including ultrafiltration, membrane adsorption for chemical or biochemical applications, or in sensing devices based on membranes and thin films.",
title = "Asimetrična porozna membrana sa epoksidnim prstenovima"
}
Radovanović, F., Nastasović, A., Nešić, A.,& Veličković, S. (2015). Asimetrična porozna membrana sa epoksidnim prstenovima.
null, null. 
Radovanović F, Nastasović A, Nešić A, Veličković S. Asimetrična porozna membrana sa epoksidnim prstenovima. 2015;

NPD in small manufacturing enterprises in Serbia

Vorkapić, Miloš; Radovanović, Filip; Ćoćkalo, Dragan; Đorđević, D.

(2015)

TY  - JOUR
AU  - Vorkapić, Miloš
AU  - Radovanović, Filip
AU  - Ćoćkalo, Dragan
AU  - Đorđević, D.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/811
AB  - New product development in small manufacturing enterprises on the territory of Serbia was investigated on a representative sample of micro and small enterprises covering a broad range of businesses. It was found that market pull was the prevalent strategy for new product development, which was characterized by close collaboration with customers from the idea to the final product including the R&D activities. Besides customers, the main sources of ideas were competitors and trade fairs or exhibitions. The marketing activities associated with new product introduction were quite limited. These findings were compared with new product development practices in neighboring countries. Based on our findings we propose two measures to improve new product development in small manufacturing enterprises in Serbia: establish a closer cooperation with external knowledge centers (universities, research institutes, innovation centers) and set up innovation networks with complementary partners by actively using the open innovation concept.
T2  - Tehnički vjesnik
T1  - NPD in small manufacturing enterprises in Serbia
SP  - 327
EP  - 332
VL  - 24
IS  - 1
DO  - 10.17559/TV-20150807185156
ER  - 
@article{
author = "Vorkapić, Miloš and Radovanović, Filip and Ćoćkalo, Dragan and Đorđević, D.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/811",
abstract = "New product development in small manufacturing enterprises on the territory of Serbia was investigated on a representative sample of micro and small enterprises covering a broad range of businesses. It was found that market pull was the prevalent strategy for new product development, which was characterized by close collaboration with customers from the idea to the final product including the R&D activities. Besides customers, the main sources of ideas were competitors and trade fairs or exhibitions. The marketing activities associated with new product introduction were quite limited. These findings were compared with new product development practices in neighboring countries. Based on our findings we propose two measures to improve new product development in small manufacturing enterprises in Serbia: establish a closer cooperation with external knowledge centers (universities, research institutes, innovation centers) and set up innovation networks with complementary partners by actively using the open innovation concept.",
journal = "Tehnički vjesnik",
title = "NPD in small manufacturing enterprises in Serbia",
pages = "327-332",
volume = "24",
number = "1",
doi = "10.17559/TV-20150807185156"
}
Vorkapić, M., Radovanović, F., Ćoćkalo, D.,& Đorđević, D. (2015). NPD in small manufacturing enterprises in Serbia.
Tehnički vjesnik, 24(1), 327-332. 
https://doi.org/10.17559/TV-20150807185156
Vorkapić M, Radovanović F, Ćoćkalo D, Đorđević D. NPD in small manufacturing enterprises in Serbia. Tehnički vjesnik. 2015;24(1):327-332
4
4
6

Plasmonic Nanomembranes for Detection and Sensing

Jakšić, Zoran; Matović, Jovan; Obradov, Marko; Tanasković, Dragan; Radovanović, Filip; Jakšić, Olga

(Belgrade : s. n., 2015)

TY  - CONF
AU  - Jakšić, Zoran
AU  - Matović, Jovan
AU  - Obradov, Marko
AU  - Tanasković, Dragan
AU  - Radovanović, Filip
AU  - Jakšić, Olga
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/803
AB  - Nanomembranes, freestanding quasi-2D structures with thickness of the order of tens of nm and smaller and a giant aspect ratio with lateral dimensions of the order of millimeters, even centimeters, represent an important building blocks in micro and nanosystems [1], corresponding to ubiquitous bilipid membranes in living cells [2]. In this contribution we present our results in theory, design and experimental fabrication of metallic and metal-dielectric nanomembranes with plasmonic properties, intended for the use in the field of sensing. We first consider different approaches to functionalization and nanostructuring of nanomembranes [3]. These include introduction of noble metal or transparent conductive oxides fillers directly into the nanomembrane, lamination (multilayering) and patterning by 2D arrays of subwavelength nanoholes. Within this context we describe our results on nanofabrication of 8 nm thick chromium-based composite nanomembranes. Biomimetic structures utilizing nanochannel-based pores are also considered. We further present our results related to the design of chemical and biological sensors based on nanomembranes with plasmonic metamaterial properties [4]. Such sensors function as refractometric devices utilizing evanescent near fields as optical concentrators and adsorption-desorption mechanism, which ensures their ultra-high sensitivity that reaches single molecule detection [5]. We present some results on chemical sensors utilizing nanomembranes exhibiting extraordinary optical transmission, as well as those based on doublefishnet structures. Finally we consider the enhancement of infrared detectors by nanomembranes [6] utilizing the designer plasmon mechanism [7].

REFERENCES
1. Jiang, C., Markutsya, S., Pikus, Y., and Tsukruk, V. V., Nature Mater., 3, 721-728 (2004).
2. Matović, J., and Jakšić, Z., "Bionic (Nano)Membranes" in Biomimetics – Materials, Structures and Processes. Examples, Ideas and Case Studies, edited by Gruber, P.; Bruckner, D.; Hellmich, C.; Schmiedmayer, H.-B.; Stachelberger, H.; Gebeshuber, I. C., Berlin: Springer, 2011, pp 9-24.
3. Jakšić, Z., and Matovic, J., Materials, 3, 165-200, (2010).
4. Jakšić, Z., Vuković, S. M., Buha, J., and Matovic, J., J. Nanophotonics, 5, 051818 (2011)
5. Jakšić, Z., Micro and Nanophotonics for Semiconductor Infrared Detectors: Towards an Ultimate Uncooled Device, Cham: Springer, 2014.
6. Zijlstra, P., Paulo, P. M. R., and Orrit, M., Nature Nanotech., 7, 379-382 (2012).
7. Pendry, J. B., Martín-Moreno, L., and Garcia-Vidal, F. J., Science, 305 847-848 (2004).
PB  - Belgrade : s. n.
C3  - XIX Symposium on Condensed Matter Physics SFKM 2015, 7–11 September 2015, Belgrade, Serbia: Book of Abstracts
T1  - Plasmonic Nanomembranes for Detection and Sensing
SP  - 68
EP  - 68
ER  - 
@conference{
author = "Jakšić, Zoran and Matović, Jovan and Obradov, Marko and Tanasković, Dragan and Radovanović, Filip and Jakšić, Olga",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/803",
abstract = "Nanomembranes, freestanding quasi-2D structures with thickness of the order of tens of nm and smaller and a giant aspect ratio with lateral dimensions of the order of millimeters, even centimeters, represent an important building blocks in micro and nanosystems [1], corresponding to ubiquitous bilipid membranes in living cells [2]. In this contribution we present our results in theory, design and experimental fabrication of metallic and metal-dielectric nanomembranes with plasmonic properties, intended for the use in the field of sensing. We first consider different approaches to functionalization and nanostructuring of nanomembranes [3]. These include introduction of noble metal or transparent conductive oxides fillers directly into the nanomembrane, lamination (multilayering) and patterning by 2D arrays of subwavelength nanoholes. Within this context we describe our results on nanofabrication of 8 nm thick chromium-based composite nanomembranes. Biomimetic structures utilizing nanochannel-based pores are also considered. We further present our results related to the design of chemical and biological sensors based on nanomembranes with plasmonic metamaterial properties [4]. Such sensors function as refractometric devices utilizing evanescent near fields as optical concentrators and adsorption-desorption mechanism, which ensures their ultra-high sensitivity that reaches single molecule detection [5]. We present some results on chemical sensors utilizing nanomembranes exhibiting extraordinary optical transmission, as well as those based on doublefishnet structures. Finally we consider the enhancement of infrared detectors by nanomembranes [6] utilizing the designer plasmon mechanism [7].

REFERENCES
1. Jiang, C., Markutsya, S., Pikus, Y., and Tsukruk, V. V., Nature Mater., 3, 721-728 (2004).
2. Matović, J., and Jakšić, Z., "Bionic (Nano)Membranes" in Biomimetics – Materials, Structures and Processes. Examples, Ideas and Case Studies, edited by Gruber, P.; Bruckner, D.; Hellmich, C.; Schmiedmayer, H.-B.; Stachelberger, H.; Gebeshuber, I. C., Berlin: Springer, 2011, pp 9-24.
3. Jakšić, Z., and Matovic, J., Materials, 3, 165-200, (2010).
4. Jakšić, Z., Vuković, S. M., Buha, J., and Matovic, J., J. Nanophotonics, 5, 051818 (2011)
5. Jakšić, Z., Micro and Nanophotonics for Semiconductor Infrared Detectors: Towards an Ultimate Uncooled Device, Cham: Springer, 2014.
6. Zijlstra, P., Paulo, P. M. R., and Orrit, M., Nature Nanotech., 7, 379-382 (2012).
7. Pendry, J. B., Martín-Moreno, L., and Garcia-Vidal, F. J., Science, 305 847-848 (2004).",
publisher = "Belgrade : s. n.",
journal = "XIX Symposium on Condensed Matter Physics SFKM 2015, 7–11 September 2015, Belgrade, Serbia: Book of Abstracts",
title = "Plasmonic Nanomembranes for Detection and Sensing",
pages = "68-68"
}
Jakšić, Z., Matović, J., Obradov, M., Tanasković, D., Radovanović, F.,& Jakšić, O. (2015). Plasmonic Nanomembranes for Detection and Sensing.
XIX Symposium on Condensed Matter Physics SFKM 2015, 7–11 September 2015, Belgrade, Serbia: Book of AbstractsBelgrade : s. n.., null, 68-68. 
Jakšić Z, Matović J, Obradov M, Tanasković D, Radovanović F, Jakšić O. Plasmonic Nanomembranes for Detection and Sensing. XIX Symposium on Condensed Matter Physics SFKM 2015, 7–11 September 2015, Belgrade, Serbia: Book of Abstracts. 2015;:68-68

Modelling the size separation of NdFeB magnetic microparticles by magnetophoresis and gravity settling

Radulović, Katarina; Radovanović, Filip; Ranđelović, Danijela; Jović, Vesna; Lamovec, Jelena; Vasiljević Radović, Dana; Jakšić, Zoran

(Belgrade : ETRAN Society, 2015)

TY  - CONF
AU  - Radulović, Katarina
AU  - Radovanović, Filip
AU  - Ranđelović, Danijela
AU  - Jović, Vesna
AU  - Lamovec, Jelena
AU  - Vasiljević Radović, Dana
AU  - Jakšić, Zoran
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/787
AB  - Properties of sintered NdFeB magnets strongly depend on granulation and size distribution of constituent particles, which requires an efficient method for their separation into relatively narrow size fractions. We investigated two methods of magnetic particle separation from a mixture with different sizes using simulation by finite element method: magnetophoresis and gravity settling. In the case of magnetophoresis magnetic particles ranging in diameter from 1 to 10 m were deflected from the direction of continuous laminar flow by a perpendicular magnetic field. Larger particles were deflected from the direction of laminar flow more than smaller particles. The applied flow rate and strength and gradient of the applied magnetic field were the key parameters in controlling the deflection. The gravity settling model simulated spherical particles falling in heptane. Particles of various sizes were divided according to the time they needed to reach the bottom. The model used an axially symmetric fluid-flow simulation in a moving coordinate system connected with the particle, coupled with an ordinary differential equation for the force balance of the particle (gravity and drag force). The grain accelerated from standstill and rapidly reached its terminal velocity. This velocity was approximately proportional to the square of the particle radius, which led to clear separation of 5-10 um particles from those with a diameter of 1 um.
PB  - Belgrade : ETRAN Society
C3  - 59. Konferencija za elektroniku, telekomunikacije, računarstvo, automatiku i nuklearnu tehniku, Srebrno jezero, 8-11. juna, 2015. godine [i] 2nd International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2015 Silver Lake (Srebrno jezero), Serbia, June 8-11, 2015: Proceedings
T1  - Modelling the size separation of NdFeB magnetic microparticles by magnetophoresis and gravity settling
ER  - 
@conference{
author = "Radulović, Katarina and Radovanović, Filip and Ranđelović, Danijela and Jović, Vesna and Lamovec, Jelena and Vasiljević Radović, Dana and Jakšić, Zoran",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/787",
abstract = "Properties of sintered NdFeB magnets strongly depend on granulation and size distribution of constituent particles, which requires an efficient method for their separation into relatively narrow size fractions. We investigated two methods of magnetic particle separation from a mixture with different sizes using simulation by finite element method: magnetophoresis and gravity settling. In the case of magnetophoresis magnetic particles ranging in diameter from 1 to 10 m were deflected from the direction of continuous laminar flow by a perpendicular magnetic field. Larger particles were deflected from the direction of laminar flow more than smaller particles. The applied flow rate and strength and gradient of the applied magnetic field were the key parameters in controlling the deflection. The gravity settling model simulated spherical particles falling in heptane. Particles of various sizes were divided according to the time they needed to reach the bottom. The model used an axially symmetric fluid-flow simulation in a moving coordinate system connected with the particle, coupled with an ordinary differential equation for the force balance of the particle (gravity and drag force). The grain accelerated from standstill and rapidly reached its terminal velocity. This velocity was approximately proportional to the square of the particle radius, which led to clear separation of 5-10 um particles from those with a diameter of 1 um.",
publisher = "Belgrade : ETRAN Society",
journal = "59. Konferencija za elektroniku, telekomunikacije, računarstvo, automatiku i nuklearnu tehniku, Srebrno jezero, 8-11. juna, 2015. godine [i] 2nd International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2015 Silver Lake (Srebrno jezero), Serbia, June 8-11, 2015: Proceedings",
title = "Modelling the size separation of NdFeB magnetic microparticles by magnetophoresis and gravity settling"
}
Radulović, K., Radovanović, F., Ranđelović, D., Jović, V., Lamovec, J., Vasiljević Radović, D.,& Jakšić, Z. (2015). Modelling the size separation of NdFeB magnetic microparticles by magnetophoresis and gravity settling.
59. Konferencija za elektroniku, telekomunikacije, računarstvo, automatiku i nuklearnu tehniku, Srebrno jezero, 8-11. juna, 2015. godine [i] 2nd International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2015 Silver Lake (Srebrno jezero), Serbia, June 8-11, 2015: ProceedingsBelgrade : ETRAN Society., null. 
Radulović K, Radovanović F, Ranđelović D, Jović V, Lamovec J, Vasiljević Radović D, Jakšić Z. Modelling the size separation of NdFeB magnetic microparticles by magnetophoresis and gravity settling. 59. Konferencija za elektroniku, telekomunikacije, računarstvo, automatiku i nuklearnu tehniku, Srebrno jezero, 8-11. juna, 2015. godine [i] 2nd International Conference on Electrical, Electronic and Computing Engineering IcETRAN 2015 Silver Lake (Srebrno jezero), Serbia, June 8-11, 2015: Proceedings. 2015;

Novel negatively-charged membrane adsorbers made using combination of photopolymerization and immersion precipitation

Tomković, Tanja; Radovanović, Filip; Grgur, Branimir; Nastasović, Aleksandra; Vasiljević Radović, Dana; Onjia, Antonije

(2015)

TY  - JOUR
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Grgur, Branimir
AU  - Nastasović, Aleksandra
AU  - Vasiljević Radović, Dana
AU  - Onjia, Antonije
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/775
AB  - A novel method combining a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution was used to prepare asymmetric polyethersulfone membranes with submicron particles incorporating glycidyl methacrylate copolymer. In order to introduce sulfonic groups epoxide rings of glycidyl methacrylate were opened using two methods. The first method was functionalization with sodium sulfite, and the second method was functionalization with sulfuric acid and then grafting with 2-acrylamido-2-methylpropane sulfonic acid. Obtained membranes were characterized using infrared spectroscopy, conductometric titration and water permeability measurements. Scanning electron microscopy and atomic force microscopy were used to investigate the surface morphology and topology of membrane. Dynamic adsorption of Rhodamine B as a model dye was used to demonstrate suitability of these novel membranes for membrane adsorption since the adsorption capacity for dye cations was much better for both functionalized membrane with sodium sulfite and grafted membrane with 2-acrylamido-2-methylpropane sulfonic acid compared to the nonfunctionalized membrane.
T2  - Journal of the Serbian Chemical Society
T1  - Novel negatively-charged membrane adsorbers made using combination of photopolymerization and immersion precipitation
SP  - 419
EP  - 431
VL  - 81
IS  - 4
DO  - 10.2298/JSC150805083T
ER  - 
@article{
author = "Tomković, Tanja and Radovanović, Filip and Grgur, Branimir and Nastasović, Aleksandra and Vasiljević Radović, Dana and Onjia, Antonije",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/775",
abstract = "A novel method combining a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution was used to prepare asymmetric polyethersulfone membranes with submicron particles incorporating glycidyl methacrylate copolymer. In order to introduce sulfonic groups epoxide rings of glycidyl methacrylate were opened using two methods. The first method was functionalization with sodium sulfite, and the second method was functionalization with sulfuric acid and then grafting with 2-acrylamido-2-methylpropane sulfonic acid. Obtained membranes were characterized using infrared spectroscopy, conductometric titration and water permeability measurements. Scanning electron microscopy and atomic force microscopy were used to investigate the surface morphology and topology of membrane. Dynamic adsorption of Rhodamine B as a model dye was used to demonstrate suitability of these novel membranes for membrane adsorption since the adsorption capacity for dye cations was much better for both functionalized membrane with sodium sulfite and grafted membrane with 2-acrylamido-2-methylpropane sulfonic acid compared to the nonfunctionalized membrane.",
journal = "Journal of the Serbian Chemical Society",
title = "Novel negatively-charged membrane adsorbers made using combination of photopolymerization and immersion precipitation",
pages = "419-431",
volume = "81",
number = "4",
doi = "10.2298/JSC150805083T"
}
Tomković, T., Radovanović, F., Grgur, B., Nastasović, A., Vasiljević Radović, D.,& Onjia, A. (2015). Novel negatively-charged membrane adsorbers made using combination of photopolymerization and immersion precipitation.
Journal of the Serbian Chemical Society, 81(4), 419-431. 
https://doi.org/10.2298/JSC150805083T
Tomković T, Radovanović F, Grgur B, Nastasović A, Vasiljević Radović D, Onjia A. Novel negatively-charged membrane adsorbers made using combination of photopolymerization and immersion precipitation. Journal of the Serbian Chemical Society. 2015;81(4):419-431
2
2
2

Novel membrane-supported hydrogel for removal of heavy metals

Stajčić, Aleksandar; Nastasović, Aleksandra; Stajić-Trošić, Jasna; Marković, Jelena; Onjia, Antonije; Radovanović, Filip

(Elsevier, 2015)

TY  - JOUR
AU  - Stajčić, Aleksandar
AU  - Nastasović, Aleksandra
AU  - Stajić-Trošić, Jasna
AU  - Marković, Jelena
AU  - Onjia, Antonije
AU  - Radovanović, Filip
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/774
AB  - Polyethersulfone membranes with integrated negatively-charged hydrogel of crosslinked poly(acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a liquid phase inversion process with photopolymerization and crosslinking of functional monomers included in the casting solution. A designed experiment was conducted to select the optimal composition for preparing membranes with a sufficient degree of swelling and ion exchange capacity. Scanning electron microscopy images revealed an ultrafine hybrid structure with an interconnected network of submicron particles embedded within the microporous polyethersulfone support. An intramembrane diffusion model was used to describe kinetics of heavy metal sorption by these hydrogels and the calculated apparent diffusion coefficients were 2–3 times larger than in commercial ion-exchange resins. Equilibrium sorption of heavy metals was described using a semi-empirical Langmuir model.
PB  - Elsevier
T2  - Journal of Environmental Chemical Engineering
T1  - Novel membrane-supported hydrogel for removal of heavy metals
SP  - 453
EP  - 461
VL  - 3
IS  - 1
DO  - 10.1016/j.jece.2015.01.005
ER  - 
@article{
author = "Stajčić, Aleksandar and Nastasović, Aleksandra and Stajić-Trošić, Jasna and Marković, Jelena and Onjia, Antonije and Radovanović, Filip",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/774",
abstract = "Polyethersulfone membranes with integrated negatively-charged hydrogel of crosslinked poly(acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a liquid phase inversion process with photopolymerization and crosslinking of functional monomers included in the casting solution. A designed experiment was conducted to select the optimal composition for preparing membranes with a sufficient degree of swelling and ion exchange capacity. Scanning electron microscopy images revealed an ultrafine hybrid structure with an interconnected network of submicron particles embedded within the microporous polyethersulfone support. An intramembrane diffusion model was used to describe kinetics of heavy metal sorption by these hydrogels and the calculated apparent diffusion coefficients were 2–3 times larger than in commercial ion-exchange resins. Equilibrium sorption of heavy metals was described using a semi-empirical Langmuir model.",
publisher = "Elsevier",
journal = "Journal of Environmental Chemical Engineering",
title = "Novel membrane-supported hydrogel for removal of heavy metals",
pages = "453-461",
volume = "3",
number = "1",
doi = "10.1016/j.jece.2015.01.005"
}
Stajčić, A., Nastasović, A., Stajić-Trošić, J., Marković, J., Onjia, A.,& Radovanović, F. (2015). Novel membrane-supported hydrogel for removal of heavy metals.
Journal of Environmental Chemical EngineeringElsevier., 3(1), 453-461. 
https://doi.org/10.1016/j.jece.2015.01.005
Stajčić A, Nastasović A, Stajić-Trošić J, Marković J, Onjia A, Radovanović F. Novel membrane-supported hydrogel for removal of heavy metals. Journal of Environmental Chemical Engineering. 2015;3(1):453-461
8
14
15

Dynamic adsorption of Rhodamine B from dilute aqueous solutions using negatively-charged membrane adsorbers

Tomković, Tanja; Nastasović, Aleksandra; Radovanović, Filip

(Belgrade : Institute of Technical Sciences of SASA, 2014)

TY  - CONF
AU  - Tomković, Tanja
AU  - Nastasović, Aleksandra
AU  - Radovanović, Filip
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/802
AB  - A series of polyethersulfone membranes with integrated cross-linked poly(glycidyl methacrylate-co-2-acrylamido-2-methylpropane sulfonic acid) were synthesized using a combination of the traditional immersion precipitation process for making membranes and photopolymerization. Negative charges were introduced using AMPS as a reactive monomer. Presence of sulfonic groups was confirmed by FTIR-ATR spectra. Changes in membrane morphology as a function of AMPS concentration in the casting solution were investigated by SEM. Membrane charge was evaluated from streaming potential measurements using a specially constructed device. Dynamic adsorption of Rhodamine B was used to demonstrate effects of monomer concentration on the properties and separation performance.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Thirteenth Young Researchers' Conference Materials Sciences and Engineering December 10-12, 2014, Belgrade, Serbia
T1  - Dynamic adsorption of Rhodamine B from dilute aqueous solutions using negatively-charged membrane adsorbers
SP  - 40
EP  - 40
ER  - 
@conference{
author = "Tomković, Tanja and Nastasović, Aleksandra and Radovanović, Filip",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/802",
abstract = "A series of polyethersulfone membranes with integrated cross-linked poly(glycidyl methacrylate-co-2-acrylamido-2-methylpropane sulfonic acid) were synthesized using a combination of the traditional immersion precipitation process for making membranes and photopolymerization. Negative charges were introduced using AMPS as a reactive monomer. Presence of sulfonic groups was confirmed by FTIR-ATR spectra. Changes in membrane morphology as a function of AMPS concentration in the casting solution were investigated by SEM. Membrane charge was evaluated from streaming potential measurements using a specially constructed device. Dynamic adsorption of Rhodamine B was used to demonstrate effects of monomer concentration on the properties and separation performance.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Thirteenth Young Researchers' Conference Materials Sciences and Engineering December 10-12, 2014, Belgrade, Serbia",
title = "Dynamic adsorption of Rhodamine B from dilute aqueous solutions using negatively-charged membrane adsorbers",
pages = "40-40"
}
Tomković, T., Nastasović, A.,& Radovanović, F. (2014). Dynamic adsorption of Rhodamine B from dilute aqueous solutions using negatively-charged membrane adsorbers.
Program and the Book of Abstracts / Thirteenth Young Researchers' Conference Materials Sciences and Engineering December 10-12, 2014, Belgrade, SerbiaBelgrade : Institute of Technical Sciences of SASA., null, 40-40. 
Tomković T, Nastasović A, Radovanović F. Dynamic adsorption of Rhodamine B from dilute aqueous solutions using negatively-charged membrane adsorbers. Program and the Book of Abstracts / Thirteenth Young Researchers' Conference Materials Sciences and Engineering December 10-12, 2014, Belgrade, Serbia. 2014;:40-40

Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate

Radovanović, Filip; Nastasović, Aleksandra; Tomković, Tanja; Vasiljević Radović, Dana; Nešić, A.; Veličković, Sava; Onjia, Antonije

(Elsevier, 2014)

TY  - JOUR
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra
AU  - Tomković, Tanja
AU  - Vasiljević Radović, Dana
AU  - Nešić, A.
AU  - Veličković, Sava
AU  - Onjia, Antonije
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/772
AB  - Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked glycidyl methacrylate copolymer were prepared by a combination of a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. As the concentration of polymerizable monomers increased the original macrovoid structure was replaced by a hybrid morphology with microglobules typical of macroporous methacrylate adsorbers embedded within microporous structure with no significant effects on water permeability. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of Orange G solution at low transmembrane pressures was used to demonstrate suitability of these novel membranes for membrane adsorption.
PB  - Elsevier
T2  - Reactive and Functional Polymers
T1  - Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate
SP  - 1
EP  - 10
VL  - 77
DO  - 10.1016/j.reactfunctpolym.2014.01.007
ER  - 
@article{
author = "Radovanović, Filip and Nastasović, Aleksandra and Tomković, Tanja and Vasiljević Radović, Dana and Nešić, A. and Veličković, Sava and Onjia, Antonije",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/772",
abstract = "Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked glycidyl methacrylate copolymer were prepared by a combination of a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. As the concentration of polymerizable monomers increased the original macrovoid structure was replaced by a hybrid morphology with microglobules typical of macroporous methacrylate adsorbers embedded within microporous structure with no significant effects on water permeability. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of Orange G solution at low transmembrane pressures was used to demonstrate suitability of these novel membranes for membrane adsorption.",
publisher = "Elsevier",
journal = "Reactive and Functional Polymers",
title = "Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate",
pages = "1-10",
volume = "77",
doi = "10.1016/j.reactfunctpolym.2014.01.007"
}
Radovanović, F., Nastasović, A., Tomković, T., Vasiljević Radović, D., Nešić, A., Veličković, S.,& Onjia, A. (2014). Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate.
Reactive and Functional PolymersElsevier., 77, 1-10. 
https://doi.org/10.1016/j.reactfunctpolym.2014.01.007
Radovanović F, Nastasović A, Tomković T, Vasiljević Radović D, Nešić A, Veličković S, Onjia A. Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate. Reactive and Functional Polymers. 2014;77:1-10
10
11
11

Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers

Jović, Vesna; Đinović, Zoran; Radovanović, Filip; Starčević, Marko; Lamovec, Jelena; Smiljanić, Milče; Lazić, Žarko

(Belgrade : Military Technical Institute, 2014)

TY  - CONF
AU  - Jović, Vesna
AU  - Đinović, Zoran
AU  - Radovanović, Filip
AU  - Starčević, Marko
AU  - Lamovec, Jelena
AU  - Smiljanić, Milče
AU  - Lazić, Žarko
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/785
AB  - In this paper we proposed microfabrication scheme for PDMS (Polydimethylsiloxane) thin membrane fabrication on Si micromachined cavities with square cross section. PDMS network samples for this research were synthesized with the same composition, which are Sylgard 184 (Dow Corning, USA) silicone elastomer base and silicone elastomer curing agent, volume ratio 10:1. Mechanical testing of PDMS elastic properties and bond strength between membranes and oxidized Si wafers, were investigated applying pressurized bulge testing In this paper experimentally determined dependence of the PDMS membrane deflection on pressure load for different membrane thicknesses and sizes of square cavities in Si wafers are given. Also, the influence of different types of Si wafer structuring by anisotropic wet chemical etching on membrane bonding strength were considered.
PB  - Belgrade : Military Technical Institute
C3  - 6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings
T1  - Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers
SP  - 674
EP  - 679
ER  - 
@conference{
author = "Jović, Vesna and Đinović, Zoran and Radovanović, Filip and Starčević, Marko and Lamovec, Jelena and Smiljanić, Milče and Lazić, Žarko",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/785",
abstract = "In this paper we proposed microfabrication scheme for PDMS (Polydimethylsiloxane) thin membrane fabrication on Si micromachined cavities with square cross section. PDMS network samples for this research were synthesized with the same composition, which are Sylgard 184 (Dow Corning, USA) silicone elastomer base and silicone elastomer curing agent, volume ratio 10:1. Mechanical testing of PDMS elastic properties and bond strength between membranes and oxidized Si wafers, were investigated applying pressurized bulge testing In this paper experimentally determined dependence of the PDMS membrane deflection on pressure load for different membrane thicknesses and sizes of square cavities in Si wafers are given. Also, the influence of different types of Si wafer structuring by anisotropic wet chemical etching on membrane bonding strength were considered.",
publisher = "Belgrade : Military Technical Institute",
journal = "6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings",
title = "Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers",
pages = "674-679"
}
Jović, V., Đinović, Z., Radovanović, F., Starčević, M., Lamovec, J., Smiljanić, M.,& Lazić, Ž. (2014). Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers.
6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: ProceedingsBelgrade : Military Technical Institute., null, 674-679. 
Jović V, Đinović Z, Radovanović F, Starčević M, Lamovec J, Smiljanić M, Lazić Ž. Characterization of PDMS membranes fabricated by bulkmicromachining on silicon wafers. 6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings. 2014;:674-679

Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture

Tomković, Tanja; Radovanović, Filip; Nastasović, Aleksandra; Marković, Jelena; Ekmeščić, Bojana; Vidojković, S.; Onjia, Antonije

(Belgrade, Serbia : Society of Physical Chemists of Serbia, 2014)

TY  - CONF
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra
AU  - Marković, Jelena
AU  - Ekmeščić, Bojana
AU  - Vidojković, S.
AU  - Onjia, Antonije
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/784
AB  - Novel polyethersulfone membranes with integrated submicron adsorbent particles were prepared by combining photoirradiation with liquid phase inversion. These particles consist of cross-linked poly(glycidyl methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA-AMPS. After membrane preparation, the epoxide groups were reacted with diethylene triamine to incorporate amine functionalities. Membranes were characterized using FTIR-ATR, SEM and dynamic adsorption of copper from a dilute solution. Effects of monomer concentrations on the properties and separation performance of membrane adsorbers are presented.
PB  - Belgrade, Serbia : Society of Physical Chemists of Serbia
C3  - Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture
SP  - 787
EP  - 790
ER  - 
@conference{
author = "Tomković, Tanja and Radovanović, Filip and Nastasović, Aleksandra and Marković, Jelena and Ekmeščić, Bojana and Vidojković, S. and Onjia, Antonije",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/784",
abstract = "Novel polyethersulfone membranes with integrated submicron adsorbent particles were prepared by combining photoirradiation with liquid phase inversion. These particles consist of cross-linked poly(glycidyl methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA-AMPS. After membrane preparation, the epoxide groups were reacted with diethylene triamine to incorporate amine functionalities. Membranes were characterized using FTIR-ATR, SEM and dynamic adsorption of copper from a dilute solution. Effects of monomer concentrations on the properties and separation performance of membrane adsorbers are presented.",
publisher = "Belgrade, Serbia : Society of Physical Chemists of Serbia",
journal = "Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture",
pages = "787-790"
}
Tomković, T., Radovanović, F., Nastasović, A., Marković, J., Ekmeščić, B., Vidojković, S.,& Onjia, A. (2014). Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture.
Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical ChemistryBelgrade, Serbia : Society of Physical Chemists of Serbia., null, 787-790. 
Tomković T, Radovanović F, Nastasović A, Marković J, Ekmeščić B, Vidojković S, Onjia A. Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture. Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;:787-790

Solid phase extraction membranes with submicron multifunctional adsorbent particles

Tomković, Tanja; Radovanović, Filip; Nastasović, Aleksandra; Vasiljević Radović, Dana; Marković, Jelena; Grgur, Branimir; Onjia, Antonije

(Elsevier, 2014)

TY  - JOUR
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra
AU  - Vasiljević Radović, Dana
AU  - Marković, Jelena
AU  - Grgur, Branimir
AU  - Onjia, Antonije
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/773
AB  - Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked poly(glycidyl methacrylate-co-2-acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a traditional liquid phase inversion process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. Scanning electron microscope images of the membrane cross-section revealed a hybrid structure with an interconnected network of submicron particles embedded within the porous polyethersulfone support. Permeation of toluidine blue solutions through non-functionalized membranes showed a dramatic effect of 2-acrylamido-2-methylpropane sulfonic acid concentration in the casting solution on the dynamic adsorption performance. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of dilute Cu2+ solutions through functionalized membranes demonstrated that the plate height for some of these membranes was an order of magnitude smaller than for commercial particle-filled membranes used in solid phase extraction.
PB  - Elsevier
T2  - European Polymer Journal
T1  - Solid phase extraction membranes with submicron multifunctional adsorbent particles
SP  - 90
EP  - 100
VL  - 63
DO  - 10.1016/j.eurpolymj.2014.12.015
ER  - 
@article{
author = "Tomković, Tanja and Radovanović, Filip and Nastasović, Aleksandra and Vasiljević Radović, Dana and Marković, Jelena and Grgur, Branimir and Onjia, Antonije",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/773",
abstract = "Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked poly(glycidyl methacrylate-co-2-acrylamido-2-methylpropane sulfonic acid) were prepared by a combination of a traditional liquid phase inversion process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. Scanning electron microscope images of the membrane cross-section revealed a hybrid structure with an interconnected network of submicron particles embedded within the porous polyethersulfone support. Permeation of toluidine blue solutions through non-functionalized membranes showed a dramatic effect of 2-acrylamido-2-methylpropane sulfonic acid concentration in the casting solution on the dynamic adsorption performance. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of dilute Cu2+ solutions through functionalized membranes demonstrated that the plate height for some of these membranes was an order of magnitude smaller than for commercial particle-filled membranes used in solid phase extraction.",
publisher = "Elsevier",
journal = "European Polymer Journal",
title = "Solid phase extraction membranes with submicron multifunctional adsorbent particles",
pages = "90-100",
volume = "63",
doi = "10.1016/j.eurpolymj.2014.12.015"
}
Tomković, T., Radovanović, F., Nastasović, A., Vasiljević Radović, D., Marković, J., Grgur, B.,& Onjia, A. (2014). Solid phase extraction membranes with submicron multifunctional adsorbent particles.
European Polymer JournalElsevier., 63, 90-100. 
https://doi.org/10.1016/j.eurpolymj.2014.12.015
Tomković T, Radovanović F, Nastasović A, Vasiljević Radović D, Marković J, Grgur B, Onjia A. Solid phase extraction membranes with submicron multifunctional adsorbent particles. European Polymer Journal. 2014;63:90-100
2
3
3

Adsorption–desorption based random number generator

Jakšić, Olga; Tanasković, Dragan; Ranđelović, Danijela; Radovanović, Filip

(Belgrade : Military Technical Institute, 2014)

TY  - CONF
AU  - Jakšić, Olga
AU  - Tanasković, Dragan
AU  - Ranđelović, Danijela
AU  - Radovanović, Filip
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/786
AB  - Data tracking and hacking is especially dangerous in modern defence forces where classified data transmission must envolve cryptographic methods for secure and reliable data coding. The more unpredictable the cipher is, the more reliable is the message. Hardware random number generator or true random number generator (TRNG) is crucial part for every telecommunication system that involves secure and confidential electronic data transfer (official state agencies, e-banking, military data networks…) because it generates random numbers from a physical process which provides statistically random noise signals, which are trully unpredictable contrary to pseudo-random number generators generated by various software algorithms. A typical hardware random noise generators employs transducer to convert random physical process (thermal noise, photoelectric effect or other quantum phenomena) to electrical signal, amplifiers and AD convertors. On the other hand, pseudo-random number generation based on methods and algorithms may be examined by statistical tests for randomnes and proove if it is cryptographically secure. We analyze the possibility to implement adsorption-based sensors noise for the creation of allgorithm for pseudo-random number generaton and also the possibility of adsorption-based hardware random generator.
PB  - Belgrade : Military Technical Institute
C3  - 6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings
T1  - Adsorption–desorption based random number generator
SP  - 617
EP  - 622
ER  - 
@conference{
author = "Jakšić, Olga and Tanasković, Dragan and Ranđelović, Danijela and Radovanović, Filip",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/786",
abstract = "Data tracking and hacking is especially dangerous in modern defence forces where classified data transmission must envolve cryptographic methods for secure and reliable data coding. The more unpredictable the cipher is, the more reliable is the message. Hardware random number generator or true random number generator (TRNG) is crucial part for every telecommunication system that involves secure and confidential electronic data transfer (official state agencies, e-banking, military data networks…) because it generates random numbers from a physical process which provides statistically random noise signals, which are trully unpredictable contrary to pseudo-random number generators generated by various software algorithms. A typical hardware random noise generators employs transducer to convert random physical process (thermal noise, photoelectric effect or other quantum phenomena) to electrical signal, amplifiers and AD convertors. On the other hand, pseudo-random number generation based on methods and algorithms may be examined by statistical tests for randomnes and proove if it is cryptographically secure. We analyze the possibility to implement adsorption-based sensors noise for the creation of allgorithm for pseudo-random number generaton and also the possibility of adsorption-based hardware random generator.",
publisher = "Belgrade : Military Technical Institute",
journal = "6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings",
title = "Adsorption–desorption based random number generator",
pages = "617-622"
}
Jakšić, O., Tanasković, D., Ranđelović, D.,& Radovanović, F. (2014). Adsorption–desorption based random number generator.
6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: ProceedingsBelgrade : Military Technical Institute., null, 617-622. 
Jakšić O, Tanasković D, Ranđelović D, Radovanović F. Adsorption–desorption based random number generator. 6th International Scientific Conference on Defensive Technologies, OTEH 2014, Belgrade, 09-10 October 2014: Proceedings. 2014;:617-622

Supplementary materials for the article: Radovanović, F., Nastasović, A., Tomković, T., Vasiljević-Radović, D., Nešić, A., Veličković, S., Onjia, A., 2014. Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate. Reactive and Functional Polymers 77, 1–10. https://doi.org/10.1016/j.reactfunctpolym.2014.01.007

Radovanović, Filip; Nastasović, Aleksandra; Tomković, Tanja; Vasiljević Radović, Dana; Nešić, A.; Veličković, Sava; Onjia, Antonije

(2014)

TY  - BOOK
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra
AU  - Tomković, Tanja
AU  - Vasiljević Radović, Dana
AU  - Nešić, A.
AU  - Veličković, Sava
AU  - Onjia, Antonije
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/4728
AB  - Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked glycidyl methacrylate copolymer were prepared by a combination of a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. As the concentration of polymerizable monomers increased the original macrovoid structure was replaced by a hybrid morphology with microglobules typical of macroporous methacrylate adsorbers embedded within microporous structure with no significant effects on water permeability. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of Orange G solution at low transmembrane pressures was used to demonstrate suitability of these novel membranes for membrane adsorption.
T1  - Supplementary materials for the article: Radovanović, F., Nastasović, A., Tomković, T., Vasiljević-Radović, D., Nešić, A., Veličković, S., Onjia, A., 2014. Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate. Reactive and Functional Polymers 77, 1–10. https://doi.org/10.1016/j.reactfunctpolym.2014.01.007
ER  - 
@misc{
author = "Radovanović, Filip and Nastasović, Aleksandra and Tomković, Tanja and Vasiljević Radović, Dana and Nešić, A. and Veličković, Sava and Onjia, Antonije",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/4728",
abstract = "Asymmetric polyethersulfone membranes with submicron particles comprising crosslinked glycidyl methacrylate copolymer were prepared by a combination of a traditional immersion precipitation process for making membranes with photopolymerization and crosslinking of functional monomers included in the casting solution. As the concentration of polymerizable monomers increased the original macrovoid structure was replaced by a hybrid morphology with microglobules typical of macroporous methacrylate adsorbers embedded within microporous structure with no significant effects on water permeability. The epoxide groups present in glycidyl methacrylate copolymer were transformed into amine functionalities by ring opening under alkaline conditions. Permeation of Orange G solution at low transmembrane pressures was used to demonstrate suitability of these novel membranes for membrane adsorption.",
title = "Supplementary materials for the article: Radovanović, F., Nastasović, A., Tomković, T., Vasiljević-Radović, D., Nešić, A., Veličković, S., Onjia, A., 2014. Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate. Reactive and Functional Polymers 77, 1–10. https://doi.org/10.1016/j.reactfunctpolym.2014.01.007"
}
Radovanović, F., Nastasović, A., Tomković, T., Vasiljević Radović, D., Nešić, A., Veličković, S.,& Onjia, A. (2014). Supplementary materials for the article: Radovanović, F., Nastasović, A., Tomković, T., Vasiljević-Radović, D., Nešić, A., Veličković, S., Onjia, A., 2014. Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate. Reactive and Functional Polymers 77, 1–10. https://doi.org/10.1016/j.reactfunctpolym.2014.01.007.
null, null. 
Radovanović F, Nastasović A, Tomković T, Vasiljević Radović D, Nešić A, Veličković S, Onjia A. Supplementary materials for the article: Radovanović, F., Nastasović, A., Tomković, T., Vasiljević-Radović, D., Nešić, A., Veličković, S., Onjia, A., 2014. Novel membrane adsorbers incorporating functionalized polyglycidyl methacrylate. Reactive and Functional Polymers 77, 1–10. https://doi.org/10.1016/j.reactfunctpolym.2014.01.007. 2014;