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

Kwangnam Ye, Purba Purnama, Youngmee Jung, Daeheum Kim, Soo Hyun Kim

Research output: Contribution to journalArticle

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(lactide-co-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.

Original languageEnglish
Pages (from-to)3-14
Number of pages12
JournalJournal of Bioactive and Compatible Polymers
Volume31
Issue number1
DOIs
Publication statusPublished - 2016 Jan 1

Keywords

  • hydrolytic degradation
  • mechanical property
  • Poly(lactide-co-glycolide)
  • polylactide
  • stereocomplex

ASJC Scopus subject areas

  • Biomaterials
  • Polymers and Plastics
  • Materials Chemistry
  • Bioengineering

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