Lipase-catalyzed polymerization of diethyl carbonate and diol to aliphatic poly(alkylene carbonate)

Shuichi Matsumura, Satoshi Harai, Kazunobu Toshima

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Diethyl carbonate (DEC) and diols, such as 1,3-propanediol and 1,4-butanediol, were polymerized by a lipase at a temperature between 40 and 80°C to yield the corresponding aliphatic polycarbonates in a successive two-step polymerization. Bulk polymerization, especially at a temperature between 70 and 75°C, and preferably using immobilized lipase from Candida antarctica (Novozym 435) gave polycarbonates with weight-average molecular weights of 40000. An excess amount of DEC, preferably a 3-fold molar ratio to the diols, was needed for the polycondensation reaction of DEC and the diols. This was due to the partial degradation of both DEC and the carbonate moieties of the polymer chain by the lipase.

Original languageEnglish
Pages (from-to)1632-1639
Number of pages8
JournalMacromolecular Chemistry and Physics
Volume201
Issue number14
DOIs
Publication statusPublished - 2000 Sep 28

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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