Preparation of aliphatic poly(thioester) by the lipase-catalyzed direct polycondensation of 11-mercaptoundecanoic acid

Makoto Kato, Kazunobu Toshima, Shuichi Matsumura

研究成果: Article査読

40 被引用数 (Scopus)

抄録

An aliphatic polythioester was enzymatically prepared by the direct polycondensation of mercaptoalkanoic acid using immobilized lipase of Candida antarctica (lipase CA) in bulk. The commercially available 11-mercaptoundecanoic acid was polymerized by lipase CA in bulk in the presence of molecular sieves 4A as a water absorbent at 110 °C for 48 h to produce poly(11-mercaptoundecanoate) with an Mw of 34 000 in high yield. The 104.5 °C melting temperature (Tm) of poly(11-mercaptoundecanoate) was about 20 °C higher than that of the corresponding polyoxyester, poly(11-hydroxyundecanoate). The polythioester was readily transformed by lipase into the corresponding cyclic oligomers mainly consisting of the dimer, which were readily repolymerized by the ring-opening polymerization using lipase as a sustainable chemical recycling.

本文言語English
ページ(範囲)2275-2280
ページ数6
ジャーナルBiomacromolecules
6
4
DOI
出版ステータスPublished - 2005 7月 1

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 生体材料
  • ポリマーおよびプラスチック
  • 材料化学

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