Transformation of biodegradable polyesters into cyclic oligomers under continuous flow using an enzyme-packed column

Yasushi Osanai, Kazunobu Toshima, Shuichi Matsumura

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The enzymatic degradation of typical chemically synthesized biodegradable plastics, such as poly(butylene adipate) and poly(ε-caprolactone), to a repolymerizable cyclic oligomer under continuous flow using an enzyme column was studied, directed towards green chemical recycling. It was confirmed that both polymers were quantitatively transformed into the corresponding cyclic oligomers by passage through the column packed with immobilized lipase from Candida antarctica (Novozym 435) at 40°C using a toluene solution. Compared to the batch treatment in a flask, a short reaction time and a low reaction temperature occurred for complete transformations of the polyesters by continuous flow through the enzyme column. The degradation activity of the enzyme column was maintained for at least six months at 40°C.

Original languageEnglish
Pages (from-to)936-942
Number of pages7
JournalMacromolecular Bioscience
Volume4
Issue number10
DOIs
Publication statusPublished - 2004 Nov 20

Keywords

  • Biodegradable polyesters
  • Chemical recycling
  • Cyclic oligomers
  • Degradation
  • Enzymes

ASJC Scopus subject areas

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

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