Lipase-catalyzed transformation of poly(∈-caprolactone) into cyclic dicaprolactone

Hiroki Ebata, Kazunobu Toshima, Shuichi Matsumura

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)


The enzymatic degradation and polymerization using an enzyme were carried out with respect to the establishment of a sustainable chemical recycling system for poly(∈-caprolactone) (PCL) which is a typical biodegradable synthetic plastic. The enzymatic transformation of PCL having an Mn of 110 000 using Candida antarctica lipase (lipase CA) in water-containing toluene at 40°C afforded the corresponding cyclic dicaprolactone (DCL, 1,8-dioxacyclotetradecane-2,9-dione) in a yield of up to 97%. Thus the obtained DCL readily polymerized again using both the fresh and recovered lipase CAs.

Original languageEnglish
Pages (from-to)X-514
Issue number4
Publication statusPublished - 2000 Dec 1

ASJC Scopus subject areas

  • Bioengineering
  • Biomaterials
  • Polymers and Plastics
  • Materials Chemistry


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