Lipase Catalyzed Copolymerization of 3(S)‐Isopropylmorpholine‐2,5‐dione and D , L ‐Lactide

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). magnified image The copolymerization of 3(S)‐isopropylmorpholine‐2,5‐dione (IPMD) and D,L‐lactide (DLLA).