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Lipase Catalyzed Copolymerization of 3( S )‐Isopropylmorpholine‐2,5‐dione and D , L ‐Lactide
Author(s) -
Feng Yakai,
Klee Doris,
Höcker Hartwig
Publication year - 2004
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/mabi.200300067
Subject(s) - copolymer , lactide , polymer chemistry , lipase , catalysis , glass transition , chemistry , polymerization , residue (chemistry) , organic chemistry , polymer , enzyme
Summary: The polymerization and copolymerization of 3( S )‐isopropylmorpholine‐2,5‐dione (IPMD) and D , L ‐lactide (DLLA) were carried out in the presence of Porcine pancreatic lipase type II (PPL) as a catalyst at 100 °C for 168 h. Homopolymers and random copolymers of various compositions were obtained with a carboxylic acid group at one end and a hydroxyl group at the other end. The glass transition temperature of the copolymers decreases with increasing mole fraction of DLLA residue in the copolymers.The copolymerization of 3( S )‐isopropylmorpholine‐2,5‐dione (IPMD) and D , L ‐lactide (DLLA).