The effect of stereocomplex polylactide particles on the mechanical properties of poly (lactide-co-glycolide) copolymer

Title
The effect of stereocomplex polylactide particles on the mechanical properties of poly (lactide-co-glycolide) copolymer
Authors
예광남Purba Purnama정영미Daeheum Kim김수현
Issue Date
2015
Publisher
Journal of bioactive and compatible polymers
Citation
VOL 게재예정, 게재예
Abstract
The effect of the addition of stereocomplex polylactide with different contents and particle sizes to a poly(lactide-co-glycolide) matrix was investigated. The organic filler stereocomplex polylactide affects the mechanical properties of poly(lactide-co-glycolide) as an organic nucleating agent without any surface modification. A low content of organic stereocomplex polylactide particles in the poly(lactideco- glycolide) blends enhanced their mechanical properties. A smaller stereocomplex polylactide particle size improves the mechanical properties of poly(lactide-co-glycolide) blends more effectively. The improvement in the mechanical properties of the poly(lactide-co-glycolide) blends stemmed from the nucleating effects of the stereocomplex polylactide particles in the poly(lactide-co-glycolide) matrix. The optimum content and homogeneous distribution of stereocomplex polylactide particles increased Young’s modulus and tensile strength by approximately 15% and 30%, respectively. The presence of stereocomplex polylactide particles also accelerated the hydrolytic degradation, as represented by a decrease in the molecular weight. The improvements in the mechanical properties and hydrolytic degradation acceleration match the requirements of poly(lactide-co-glycolide) applications as bone fracture fixation materials.
URI
http://pubs.kist.re.kr/handle/201004/50970
ISSN
08839115
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KIST Publication > Article
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