Ekmeščić, Bojana

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  • Ekmeščić, Bojana (2)
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Author's Bibliography

Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution

Nastasović, Aleksandra; Ignjatović, Nenad; Uskoković, Dragan; Marković, Dana; Ekmeščić, Bojana; Maksin, Danijela; Onjia, Antonije

(Springer US, 2014)

TY  - JOUR
AU  - Nastasović, Aleksandra
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
AU  - Marković, Dana
AU  - Ekmeščić, Bojana
AU  - Maksin, Danijela
AU  - Onjia, Antonije
PY  - 2014
AB  - Inverse gas chromatography at infinite dilution was applied to determine the thermodynamic interactions of poly(l-lactide) (PLLA) and the composite of biphasic calcium phosphate and PLLA (BCP/PLLA). The specific retention volumes, V0g , of 11 organic compounds of different chemical nature and polarity (non-polar, donor or acceptor) were determined in the temperature range of 308–378 K for PLLA and 308–398 K for BCP/PLLA. The weight fraction activity coefficients of test sorbates, Ω∞1 , and the Flory–Huggins interaction parameters, χ∞12 , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, ΔG∞1 , the partial molar heat of mixing, ΔH∞1 , the sorption molar free energy, ΔGS1 , the sorption enthalpy, ΔHS1 , and the sorption entropy, ΔSS1 , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of Ω∞1 indicated n-alkanes, diethyl ether, tetrahydrofurane (THF), cyclohexane, benzene, dioxane (except for 338 K), and ethyl acetate (EtAc) (except for 338 K) as non-solvents, and chloroform (CHCl3) as good solvent (except for 378 K) for PLLA. For BCP/PLLA, CHCl3, EtAc (for 378 K), dioxane (except for 378 K), and THF were indicated as good solvents.
PB  - Springer US
T2  - Journal of Materials Science
T1  - Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution
SP  - 5076
EP  - 5086
VL  - 49
IS  - 14
DO  - 10.1007/s10853-014-8214-3
UR  - https://hdl.handle.net/21.15107/rcub_dais_555
ER  - 
@article{
author = "Nastasović, Aleksandra and Ignjatović, Nenad and Uskoković, Dragan and Marković, Dana and Ekmeščić, Bojana and Maksin, Danijela and Onjia, Antonije",
year = "2014",
abstract = "Inverse gas chromatography at infinite dilution was applied to determine the thermodynamic interactions of poly(l-lactide) (PLLA) and the composite of biphasic calcium phosphate and PLLA (BCP/PLLA). The specific retention volumes, V0g , of 11 organic compounds of different chemical nature and polarity (non-polar, donor or acceptor) were determined in the temperature range of 308–378 K for PLLA and 308–398 K for BCP/PLLA. The weight fraction activity coefficients of test sorbates, Ω∞1 , and the Flory–Huggins interaction parameters, χ∞12 , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, ΔG∞1 , the partial molar heat of mixing, ΔH∞1 , the sorption molar free energy, ΔGS1 , the sorption enthalpy, ΔHS1 , and the sorption entropy, ΔSS1 , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of Ω∞1 indicated n-alkanes, diethyl ether, tetrahydrofurane (THF), cyclohexane, benzene, dioxane (except for 338 K), and ethyl acetate (EtAc) (except for 338 K) as non-solvents, and chloroform (CHCl3) as good solvent (except for 378 K) for PLLA. For BCP/PLLA, CHCl3, EtAc (for 378 K), dioxane (except for 378 K), and THF were indicated as good solvents.",
publisher = "Springer US",
journal = "Journal of Materials Science",
title = "Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution",
pages = "5076-5086",
volume = "49",
number = "14",
doi = "10.1007/s10853-014-8214-3",
url = "https://hdl.handle.net/21.15107/rcub_dais_555"
}
Nastasović, A., Ignjatović, N., Uskoković, D., Marković, D., Ekmeščić, B., Maksin, D.,& Onjia, A. (2014). Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution.
Journal of Materials Science
Springer US., 49(14), 5076-5086.
https://doi.org/10.1007/s10853-014-8214-3
Nastasović A, Ignjatović N, Uskoković D, Marković D, Ekmeščić B, Maksin D, Onjia A. Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution. Journal of Materials Science. 2014;49(14):5076-5086.
doi:10.1007/s10853-014-8214-3.
Nastasović Aleksandra, Ignjatović Nenad, Uskoković Dragan, Marković Dana, Ekmeščić Bojana, Maksin Danijela, Onjia Antonije, "Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution" Journal of Materials Science, 49, no. 14 (2014):5076-5086,
https://doi.org/10.1007/s10853-014-8214-3 .
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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
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
UR  - https://hdl.handle.net/21.15107/rcub_dais_784
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",
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",
url = "https://hdl.handle.net/21.15107/rcub_dais_784"
}
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 Chemistry
Belgrade, Serbia : Society of Physical Chemists of Serbia., 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.
Tomković Tanja, Radovanović Filip, Nastasović Aleksandra, Marković Jelena, Ekmeščić Bojana, Vidojković S., Onjia Antonije, "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