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

✍ Scribed by Yakai Feng; Doris Klee; Hartwig Höcker

Book ID
102466877
Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
86 KB
Volume
4
Category
Article
ISSN
1616-5187

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✦ Synopsis

Abstract

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

📜 SIMILAR VOLUMES

Lipase-catalyzed ring-opening polymeriza
Lipase-catalyzed ring-opening polymerization of 3(S)-isopropylmorpholine-2,5-dione
✍ Yakai Feng; Jens Knüfermann; Doris Klee; Hartwig Höcker 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 127 KB 👁 2 views

Lipase-catalyzed ring-opening bulk polymerizations of 3(S)-isopropylmorpholine-2,5-dione (IPMD) were investigated. Selected commercial lipases were screened as catalysts for IPMD polymerization at 100 8C. Polymerizations catalyzed with lipases PPL, PS, and CR result in IPMD conversions of about 50%,