Multicarboxylic aromatic acid core initiator for the synthesis or star-shaped poly(ε-caprolactone) with carboxyl end groups

Zhongfan Jia, Junlian Huang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We successfully carried out the ring-opening polymerization of ε-caprolactone with 1,3,5-benzenetricar-boxylic acid and 1,2,4,5-benzenetetracarboxylic acid as the core initiators at 225°C in bulk, and three-armed and fourarmed star poly(ε-caprolactone)s [poly(ε-CL)s] with carboxyl end groups were obtained. No transesterification, which would have led to a decrease in the molecular weight of poly(ε-CL), was found. The effects of the polymerization conditions on the polymerization are discussed; the poly(ε-CL)s were characterized by 1H-NMR, gel permeation chromatography, and thermogravimetric analysis in detail. A mechanism of alkyl-oxygen bond scission by the nucleophilic attack of the carboxyl anions via hydrogen proton transfer is presented for this system.

Original languageEnglish
Pages (from-to)3713-3717
Number of pages5
JournalJournal of Applied Polymer Science
Volume100
Issue number5
DOIs
Publication statusPublished - 5 Jun 2006
Externally publishedYes

Keywords

  • Initiators
  • Ring-opening polymerization
  • Star polymers
  • Thermogravimetric analysis (TGA)

Fingerprint Dive into the research topics of 'Multicarboxylic aromatic acid core initiator for the synthesis or star-shaped poly(ε-caprolactone) with carboxyl end groups'. Together they form a unique fingerprint.

  • Cite this