Lipase-Catalyzed Transformation of Poly(ε-caprolactone) into Cyclic Dicaprolactone
- 17 November 2000
- journal article
- Published by American Chemical Society (ACS) in Biomacromolecules
- Vol. 1 (4), 511-514
- https://doi.org/10.1021/bm000059y
Abstract
The enzymatic degradation and polymerization using an enzyme were carried out with respect to the establishment of a sustainable chemical recycling system for poly(epsilon-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 degrees 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.Keywords
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