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2007 (1)
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Trifunovic, S.

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  • Trifunovic, S. (1)
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The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite

Milićević, Dejan S.; Trifunovic, S.; Ignjatović, Nenad; Suljovrujić, Edin H.

(2007)

TY  - CONF
AU  - Milićević, Dejan S.
AU  - Trifunovic, S.
AU  - Ignjatović, Nenad
AU  - Suljovrujić, Edin H.
PY  - 2007
UR  - http://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.
C3  - Materials Science Forum
T1  - The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite
SP  - 497
VL  - 555
DO  - 10.4028/www.scientific.net/MSF.555.497
ER  - 
@conference{
author = "Milićević, Dejan S. and Trifunovic, S. and Ignjatović, Nenad and Suljovrujić, Edin H.",
year = "2007",
url = "http://dais.sanu.ac.rs/123456789/2754",
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.",
journal = "Materials Science Forum",
title = "The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite",
pages = "497",
volume = "555",
doi = "10.4028/www.scientific.net/MSF.555.497"
}
Milićević, D. S., Trifunovic, S., Ignjatović, N.,& Suljovrujić, E. H. (2007). The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite.
Materials Science Forum, 555, 497.
https://doi.org/10.4028/www.scientific.net/MSF.555.497
Milićević DS, Trifunovic S, Ignjatović N, Suljovrujić EH. The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite. Materials Science Forum. 2007;555:497
Milićević Dejan S., Trifunovic S., Ignjatović Nenad, Suljovrujić Edin H., "The influence of gamma radiation on the glass transition of hydroxyapatite/poly L-lactide composite" 555 (2007):497,
https://doi.org/10.4028/www.scientific.net/MSF.555.497 .
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