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Cited by 27biodegradable polymer synthesis and propertiesEnzyme Catalysis and ImmobilizationPhase Equilibria and Thermodynamics

Enzymatic transformation of aliphatic polyesters into cyclic oligomers using enzyme packed column under continuous flow of supercritical carbon dioxide with toluene

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Osanai, Yasushi, Toshima, Kazunobu, Matsumura, Shuichi·2006·Science and Technology of Advanced Materials
DOI 10.1016/j.stam.2005.12.003
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Abstract

The enzymatic degradation of chemically synthesized typical biodegradable plastics, such as poly(R,S-3-hydroxybutanoate), poly(3-caprolactone) and poly(butylene adipate), into reactive cyclic oligomers under the continuous flow of supercritical or subcritical carbon dioxide (scCO2) with toluene through an enzyme column was studied with reference to chemical recycling. It was confirmed that all the tested 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 8C under the continuous flow of scCO2 with some organic solvent. Compared to the pure organic solvents, by the addition of scCO2 as a mobile phase degradation of the polymer was significantly promoted with respect to the reaction time, temperature and polymer concentration for complete transformation of the polyesters into oligomers through the enzyme column. This phenomenon is ascribed to the high diffusivity, low viscosity and better mass-transfer properties of scCO2 as the reaction media. The degradation activity of the enzyme column was maintained for at least 6 months at 40 8C.

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Crossref · 10.1016/j.stam.2005.12.003

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  • In flow conditions (15 MPa) with 80% sCO2 and 20% toluene at 40 °C, more than 99% of the products were cyclic oligomers (210 < Mn < 1010 g/mol).

    “In flow conditions (15 MPa) with 80% sCO2 and 20% toluene at 40 °C, more than 99% of the products were cyclic oligomers (210 < Mn < 1010 g/mol).519”

    From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [519]

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Authors
Osanai, Y., Toshima, K., & Matsumura, S.
Affiliations
Keio University (JP)
Corresponding author
Matsumura, Shuichi
ORCID
Venue
Science and Technology of Advanced Materials
Publisher
Informa UK Limited
Published
2006-01
Volume
7
Issue
2
Pages
202-208
ISSN
  • 1468-6996 (ISSN-L)
  • 1878-5514
DOI
10.1016/j.stam.2005.12.003
OpenAlex
W2049894755
Cited by
27
References
23
Citations by year
2024: 2 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 1 · 2019: 2 · 2018: 1 · 2017: 2 · 2015: 3 · 2014: 3 · 2013: 1
FWCI
0.91
Type
journal article
Language
en
Open access
Locations
Science and Technology of Advanced Materials (publishedVersion)
Funders
Keio University
Topics
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Enzyme Catalysis and Immobilization
  • Physical Sciences › Engineering › Biomedical Engineering › Phase Equilibria and Thermodynamics
Keywords
enzymatic depolymerization, aliphatic polyesters, cyclic oligomers, supercritical carbon dioxide, toluene, immobilized lipase, Novozym 435, Candida antarctica lipase, poly(butylene adipate), biodegradable plastics, chemical recycling, continuous flow, mass transfer

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