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

Shuichi Matsumura, Satoshi Harai, Kazunobu Toshima

研究成果: Article査読

51 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1632-1639
ページ数8
ジャーナルMacromolecular Chemistry and Physics
201
14
DOI
出版ステータスPublished - 2000 9月 28

ASJC Scopus subject areas

  • 凝縮系物理学
  • 物理化学および理論化学
  • 有機化学
  • ポリマーおよびプラスチック
  • 材料化学

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