Synthesis and characterization of poly(ε-caprolactone)-poly(L-lactide) diblock copolymers with an organic amino calcium catalyst

Longhai Piao, Jingru Sun, Zhiyuan Zhong, Qizhi Liang, Xuesi Chen, Jung Hyun Kim, Xiabin Jing

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The quasiliving characteristics of the ring-opening polymerization of s-caprolactone (CL) catalyzed by an organic amino calcium were demonstrated. Taking advantage of this feature, we synthesized a series of poly (ε-caprolactone) (PCL)-poly(L-lactide) (PLA) diblock copolymers with the sequential addition of the monomers CL and L-lactide. The block structure was confirmed by 1H-NMR, 13C-NMR, and gel permeation chromatography analysis. The crystalline structure of the copolymers was investigated by differential scanning calorimetry and wide-angle X-ray diffraction analysis. When the molecular weight of the PLA block was high enough, phase separation took place in the block copolymer to form PCL and PLA domains, respectively.

Original languageEnglish
Pages (from-to)2654-2660
Number of pages7
JournalJournal of Applied Polymer Science
Volume102
Issue number3
DOIs
Publication statusPublished - 2006 Nov 5

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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