脂肪酶催化3(S)-异丙基吗啉-2,5-二酮与D,L-丙交酯的共聚反应。

Lipase catalyzed copolymerization of 3(S)-isopropylmorpholine-2,5-dione and D,L-lactide.

作者信息

Feng Yakai, Klee Doris, Höcker Hartwig

机构信息

Lehrstuhl für Textilchemie und Makromolekulare Chemie der RWTH Aachen, Veltmanplatz 8, D-52062 Aachen, Germany.

出版信息

Macromol Biosci. 2004 Jun 25;4(6):587-90. doi: 10.1002/mabi.200300067.

DOI:10.1002/mabi.200300067

PMID:15468252

Abstract

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 degrees 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.

摘要

在II型猪胰脂肪酶（PPL）作为催化剂存在的情况下，于100℃下进行3(S)-异丙基吗啉-2,5-二酮（IPMD）和D,L-丙交酯（DLLA）的聚合及共聚反应168小时。得到了各种组成的均聚物和无规共聚物，其一端带有羧基，另一端带有羟基。共聚物的玻璃化转变温度随着共聚物中DLLA残基摩尔分数的增加而降低。