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Lipase‐Catalyzed Degradation of Polyester in Supercritical Carbon Dioxide
Author(s) -
Takamoto Tetsufumi,
Uyama Hiroshi,
Kobayashi Shiro
Publication year - 2001
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/1616-5195(20010701)1:5<215::aid-mabi215>3.0.co;2-9
Subject(s) - candida antarctica , chemistry , degradation (telecommunications) , polyester , supercritical carbon dioxide , lipase , hydrolysis , catalysis , supercritical fluid , acetone , oligomer , carbon dioxide , chemical engineering , organic chemistry , polymer chemistry , telecommunications , computer science , enzyme , engineering
Enzymatic degradation of poly( ε ‐caprolactone) has been successfully carried out in supercritical carbon dioxide (scCO 2 ). Candida antarctica lipase smoothly catalyzed the hydrolytic degradation in scCO 2 to give oligo( ε ‐caprolactone). The degradation in the presence of acetone (5 vol.‐%) produced the oligomer of smaller molecular weight (less than 500) compared to that prepared without the additive. Matrix‐assisted laser desorption/ionization‐time of flight (MALDI‐TOF) mass spectrometry analysis showed that the degradation product was of a mixture of linear and cyclic oligomers. The addition of a very small amount of water also promoted the degradation of the polyester.