Žagar, Ema

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orcid::0000-0002-2694-4312
  • Žagar, Ema (2)
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Author's Bibliography

Influence of ultrasonic processing on the macromolecular properties of poly (D,L-lactide-co-glycolide) alone and in its biocomposite with hydroxyapatite

Vukomanović, Marija; Mitrić, Miodrag; Škapin, Srečo Davor; Žagar, Ema; Plavec, Janez; Ignjatović, Nenad; Uskoković, Dragan

(2010)

TY  - JOUR
AU  - Vukomanović, Marija
AU  - Mitrić, Miodrag
AU  - Škapin, Srečo Davor
AU  - Žagar, Ema
AU  - Plavec, Janez
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
PY  - 2010
AB  - In this work poly(D,L-lactide-co-glycolide) (PLGA) and a poly(D,L-lactide-co-glycolide)/hydroxyapatite (PLGA/HAp) composite processed in an ultrasonic field at higher (25 degrees C) and lower (8 degrees C) temperatures were studied with respect to the molecular properties of the obtained materials. The processing of the PLGA and the PLGA/HAp composite in an ultrasonic field resulted in a change of molar mass averages of the polymer/polymeric part of these materials, while an amorphous structure and a 50:50 lactide-to-glycolide co-monomer ratio were preserved without the formation of crystalline oligomers. However, mobility of polymeric chains obtained after ultrasonic processing was lower indicating ordering the structure of polymeric chains as a result of processing. Additionally, it was observed that the mobility of the PLGA macromolecules was lower within the composite in comparison with the mobility of the chains within the PLGA alone in the case when both were obtained after ultrasonic processing. This was a consequence of the structure formation through the interactions between the PLGA and the HAp. Based on these results different degradation rate of PLGA in composite can be expected, which is important in the application of this material for the controlled drug delivery of medicaments. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Ultrasonics Sonochemistry
T1  - Influence of ultrasonic processing on the macromolecular properties of poly (D,L-lactide-co-glycolide) alone and in its biocomposite with hydroxyapatite
SP  - 902
EP  - 908
VL  - 17
IS  - 5
DO  - 10.1016/j.ultsonch.2010.01.007
UR  - https://hdl.handle.net/21.15107/rcub_dais_2747
ER  - 
@article{
author = "Vukomanović, Marija and Mitrić, Miodrag and Škapin, Srečo Davor and Žagar, Ema and Plavec, Janez and Ignjatović, Nenad and Uskoković, Dragan",
year = "2010",
abstract = "In this work poly(D,L-lactide-co-glycolide) (PLGA) and a poly(D,L-lactide-co-glycolide)/hydroxyapatite (PLGA/HAp) composite processed in an ultrasonic field at higher (25 degrees C) and lower (8 degrees C) temperatures were studied with respect to the molecular properties of the obtained materials. The processing of the PLGA and the PLGA/HAp composite in an ultrasonic field resulted in a change of molar mass averages of the polymer/polymeric part of these materials, while an amorphous structure and a 50:50 lactide-to-glycolide co-monomer ratio were preserved without the formation of crystalline oligomers. However, mobility of polymeric chains obtained after ultrasonic processing was lower indicating ordering the structure of polymeric chains as a result of processing. Additionally, it was observed that the mobility of the PLGA macromolecules was lower within the composite in comparison with the mobility of the chains within the PLGA alone in the case when both were obtained after ultrasonic processing. This was a consequence of the structure formation through the interactions between the PLGA and the HAp. Based on these results different degradation rate of PLGA in composite can be expected, which is important in the application of this material for the controlled drug delivery of medicaments. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Ultrasonics Sonochemistry",
title = "Influence of ultrasonic processing on the macromolecular properties of poly (D,L-lactide-co-glycolide) alone and in its biocomposite with hydroxyapatite",
pages = "902-908",
volume = "17",
number = "5",
doi = "10.1016/j.ultsonch.2010.01.007",
url = "https://hdl.handle.net/21.15107/rcub_dais_2747"
}
Vukomanović, M., Mitrić, M., Škapin, S. D., Žagar, E., Plavec, J., Ignjatović, N.,& Uskoković, D. (2010). Influence of ultrasonic processing on the macromolecular properties of poly (D,L-lactide-co-glycolide) alone and in its biocomposite with hydroxyapatite.
Ultrasonics Sonochemistry, 17(5), 902-908.
https://doi.org/10.1016/j.ultsonch.2010.01.007
Vukomanović M, Mitrić M, Škapin SD, Žagar E, Plavec J, Ignjatović N, Uskoković D. Influence of ultrasonic processing on the macromolecular properties of poly (D,L-lactide-co-glycolide) alone and in its biocomposite with hydroxyapatite. Ultrasonics Sonochemistry. 2010;17(5):902-908.
doi:10.1016/j.ultsonch.2010.01.007.
Vukomanović Marija, Mitrić Miodrag, Škapin Srečo Davor, Žagar Ema, Plavec Janez, Ignjatović Nenad, Uskoković Dragan, "Influence of ultrasonic processing on the macromolecular properties of poly (D,L-lactide-co-glycolide) alone and in its biocomposite with hydroxyapatite" Ultrasonics Sonochemistry, 17, no. 5 (2010):902-908,
https://doi.org/10.1016/j.ultsonch.2010.01.007 .
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Composition, morphology and structure of DLPLG/HAp nanocomposite fabricated in the field of ultrasound

Jevtić, Marija; Škapin, Srečo Davor; Žagar, Ema; Ignjatović, Nenad; Uskoković, Dragan

(2008)

TY  - CONF
AU  - Jevtić, Marija
AU  - Škapin, Srečo Davor
AU  - Žagar, Ema
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
PY  - 2008
AB  - Poster presented at the Women in Nano Winter School, Kranjska Gora, Slovenija, 7-9. februar 2008.
T1  - Composition, morphology and structure of DLPLG/HAp nanocomposite fabricated in the field of ultrasound
UR  - https://hdl.handle.net/21.15107/rcub_dais_296
ER  - 
@conference{
author = "Jevtić, Marija and Škapin, Srečo Davor and Žagar, Ema and Ignjatović, Nenad and Uskoković, Dragan",
year = "2008",
abstract = "Poster presented at the Women in Nano Winter School, Kranjska Gora, Slovenija, 7-9. februar 2008.",
title = "Composition, morphology and structure of DLPLG/HAp nanocomposite fabricated in the field of ultrasound",
url = "https://hdl.handle.net/21.15107/rcub_dais_296"
}
Jevtić, M., Škapin, S. D., Žagar, E., Ignjatović, N.,& Uskoković, D. (2008). Composition, morphology and structure of DLPLG/HAp nanocomposite fabricated in the field of ultrasound.
.
Jevtić M, Škapin SD, Žagar E, Ignjatović N, Uskoković D. Composition, morphology and structure of DLPLG/HAp nanocomposite fabricated in the field of ultrasound. 2008;.
Jevtić Marija, Škapin Srečo Davor, Žagar Ema, Ignjatović Nenad, Uskoković Dragan, "Composition, morphology and structure of DLPLG/HAp nanocomposite fabricated in the field of ultrasound" (2008)