Biodegradable stereocomplex polylactide having flexible ε-caprolactone unit

Min Kyu Kang, Youngmee Jung, Soo Hyun Kim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Stereocomplex formation between poly(L-lactide-co-ε-caprolactone) (PLLCL) and poly(D-lactide-co-ε-caprolactone) (PDLCL) is known to be disturbed when their molecular weights increase to >105 g/mol. Here, Strong and biodegradable stereocomplexes of copolymers (S-PLCL) were studied using a supercritical fluid and co-solvent system. Mechanical properties such as tensile strength were ∼2.5 times increased due to high degree of stereocomplex than those of PLGA20. The addition of the flexible ε-caprolactone units to the polylactide increased its thermal stability which significantly enhanced 100% degree of stereocomplex after 2nd melt processing through DSC due to the increased mobillity of the polylactide's chains. The degradation behavior of resulting biodegradable S-PLCL showed slow degradation with increasing CL content in 0.13 M, pH 4.3 phosphate buffers.

Original languageEnglish
Pages (from-to)1036-1041
Number of pages6
JournalMacromolecular Research
Volume21
Issue number9
DOIs
Publication statusPublished - 2013 Sep

Keywords

  • copolymerization
  • stereocomplex formation
  • supercritical fluid

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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