TY  - CONF
AU  - Milićević, Dejan S.
AU  - Trifunović, S.
AU  - Ignjatović, Nenad
AU  - Suljovrujić, Edin H.
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/2754
AB  - Hydroxyapatite/poly L-lactide (HAp/PLLA) is a composite biomaterial which has been widely utilized for substitution and reparation of the hard bone tissue. It is well known that gamma irradiation has been successfully employed in the modification/sterilization of such porous composites and that it has advantages over other procedures. In this study, differential scanning calorimetry (DSC) measurements were made to investigate the influence of the radiation on glass transition behavior and structural relaxation, as well as to estimate the activation energy for this process. The apparent activation energy Delta H* for structural relaxation in the glass transition region was determined on the basis of the heating rate dependence of the glass transition temperature T-g. Furthermore, the results were correlated with those obtained by gel permeation chromatography (GPC). Our findings support the fact that the radiation-induced chain scission in the PLLA phase is the main reason for the decrease of the glass transition temperature and/or activation energy with the absorbed dose.
PB  - Trans Tech Publications, Ltd.
C3  - Research Trends in Contemporary Materials Science
T1  - The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite
SP  - 497
EP  - 502
VL  - 555
DO  - 10.4028/www.scientific.net/MSF.555.497
UR  - https://hdl.handle.net/21.15107/rcub_dais_2754
ER  - 

@conference{
author = "Milićević, Dejan S. and Trifunović, S. and Ignjatović, Nenad and Suljovrujić, Edin H.",
year = "2007",
abstract = "Hydroxyapatite/poly L-lactide (HAp/PLLA) is a composite biomaterial which has been widely utilized for substitution and reparation of the hard bone tissue. It is well known that gamma irradiation has been successfully employed in the modification/sterilization of such porous composites and that it has advantages over other procedures. In this study, differential scanning calorimetry (DSC) measurements were made to investigate the influence of the radiation on glass transition behavior and structural relaxation, as well as to estimate the activation energy for this process. The apparent activation energy Delta H* for structural relaxation in the glass transition region was determined on the basis of the heating rate dependence of the glass transition temperature T-g. Furthermore, the results were correlated with those obtained by gel permeation chromatography (GPC). Our findings support the fact that the radiation-induced chain scission in the PLLA phase is the main reason for the decrease of the glass transition temperature and/or activation energy with the absorbed dose.",
publisher = "Trans Tech Publications, Ltd.",
journal = "Research Trends in Contemporary Materials Science",
title = "The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite",
pages = "497-502",
volume = "555",
doi = "10.4028/www.scientific.net/MSF.555.497",
url = "https://hdl.handle.net/21.15107/rcub_dais_2754"
}

Milićević, D. S., Trifunović, S., Ignjatović, N.,& Suljovrujić, E. H.. (2007). The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite. in Research Trends in Contemporary Materials Science
Trans Tech Publications, Ltd.., 555, 497-502.
https://doi.org/10.4028/www.scientific.net/MSF.555.497
https://hdl.handle.net/21.15107/rcub_dais_2754

Milićević DS, Trifunović S, Ignjatović N, Suljovrujić EH. The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite. in Research Trends in Contemporary Materials Science. 2007;555:497-502.
doi:10.4028/www.scientific.net/MSF.555.497
https://hdl.handle.net/21.15107/rcub_dais_2754 .

Milićević, Dejan S., Trifunović, S., Ignjatović, Nenad, Suljovrujić, Edin H., "The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite" in Research Trends in Contemporary Materials Science, 555 (2007):497-502,
https://doi.org/10.4028/www.scientific.net/MSF.555.497 .,
https://hdl.handle.net/21.15107/rcub_dais_2754 .