High-molecular-weight polycarbonates synthesized by enzymatic ROP of a cyclic carbonate as a green process

Yoshio Yamamoto, Sachiko Kaihara, Kazunobu Toshima, Shuichi Matsumura

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Abstract

High-molecular-weight PTeMC and PHMC were prepared by the lipase-catalyzed polymerization of butane-1,4-diol or hexane-1,6-diol and diphenyl carbonate via the formation of a cyclic dimer by a green process. Cyclic carbonate dimers were prepared by the lipase-catalyzed condensation of diphenyl carbonate with butane-1,4-diol or hexane-1,6-diol in dilute toluene solution using an immobilized lipase from Candida antarctica, and was followed by the ring-opening polymerization of the cyclic dimer in bulk with the same lipase to produce PTeMC with Mw =119 000 g·mol-1 and PHMC with M w =399 000 g·mol-1, respectively. Additionally, enzymatic polymerization of cyclic carbonate dimer was analyzed with respect to the Km and Vmax for the lipase.

Original languageEnglish
Pages (from-to)968-978
Number of pages11
JournalMacromolecular Bioscience
Volume9
Issue number10
DOIs
Publication statusPublished - 2009 Oct 8

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Keywords

  • Aliphatic polycarbonates
  • Cyclic carbonate dimer
  • Enzymatic ring-opening polymerization
  • Green processes
  • Lipase

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomaterials
  • Polymers and Plastics
  • Materials Chemistry

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