Toughening of Poly(L-lactide) with Branched Multiblock Poly(ε-caprolactone)/poly(D-lactide) Copolymers

Yue Chang, Zhize Chen, Yiqi Yang

Research output: Contribution to journalArticle

Abstract

A total biodegradable elastomer, branched multiblock poly(ε-caprolactone)/poly(D-lactide) (BMCD) was prepared using 3-isocyanatopropyltriethoxysilane (IPTS) as a coupling agent. To improve the toughness of poly(L-lactide)(PLLA), PLLA/BMCD blends were prepared via a simple solvent evaporation method at various BMCD loadings. Tensile test showed that the elongation at break of PLLA blends increased to 50.97% and 104.55% at the loadings of 5% and 7% (mass fraction) BMCD respectively, with no sacrifice of their biodegradability. This approach allowed for simultaneous control of mechanical and biodegradable properties of PLLA with a few additives in actual production. Furthermore, UV-VIS test showed that the light transmittance of the films at the loadings of 5% (mass fraction) BMCD was almost the same as pure PLLA at 400 nm.

Original languageEnglish (US)
Pages (from-to)365-374
Number of pages10
JournalJournal of Donghua University (English Edition)
Volume35
Issue number5
StatePublished - Oct 2018

Keywords

  • Branched polymer
  • Poly(L-lactide)(PLLA)
  • Stereocomplex
  • Toughness
  • Transparency

ASJC Scopus subject areas

  • Polymers and Plastics
  • Industrial and Manufacturing Engineering

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