Enzymatic synthesis and properties of high molecular weight polythioester

Makoto Kato, Kazunobu Toshima, Shuichi Matsumura

Research output: Contribution to conferencePaper

Abstract

Polythioesters have recently been attracted attention due to their interesting characteristics, such as poor solubility against organic solvents and higher heat stability compared to polyoxyesters. Synthesis of high molecular weight polythioester using an enzyme was studied First, hexane- 1,6-dithiol and diacid diesters were reacted in ethylcyclohexane using lipase CA to prcduce cyclic oligomere with an Mwof a few hundreds. Systhesis of polythoester was studied using these cyclic oligomers. A high molecular weight polythioester having an Mw of about 120,000 was prepared by the ring opening polymerization of cyclic oligomers using lipase CA Thermal and mechanical properties of polythioesters were compared with the omresponding polyoxyester. Degradation of the obtained pdythioester into the cyclic oligomer was an objective for establishing chemical recycling.

Original languageEnglish
Number of pages1
Publication statusPublished - 2006 Dec 1
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: 2006 Sep 202006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period06/9/2006/9/22

Keywords

  • Degradation
  • Enzymatic polymerization
  • Mechanical properties
  • Polythioester
  • Ring-opening polymerization
  • Thermal properties

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Kato, M., Toshima, K., & Matsumura, S. (2006). Enzymatic synthesis and properties of high molecular weight polythioester. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.