Preliminary Study on Lipase-catalyzed Synthesis of Polyesters Containing L-Malic Acid Units  

作　　者：Da Hu YAO Guang Ji LI 

机构地区：[1]College of Materials Science and Engineer, South China University of Technology, Guangzhou 510640

出　　处：《Chinese Chemical Letters》2006年第12期1611-1614,共4页中国化学快报（英文版）

摘　　要：Terpolymer of 1, 8-octanediol, adipic acid, and L-malic acid was synthesized via a lipase-catalyzed direct polycondensation. The products were characterized by GPC and 1H NMR. The results indicated that the molecular weight of the prepared polymers decreased with increasing L-malic acid content in the monomer feed ratio, and that change in the L-malic acid content from 0 to 20 mol % did not remarkably influenced on the molecular weight distribution Mw /Ma of the prepared samples. The 1H NMR spectra of the obtained copolymer samples showed that hydroxyl groups of L-malic acid did not take part in the polymerization reaction.Terpolymer of 1, 8-octanediol, adipic acid, and L-malic acid was synthesized via a lipase-catalyzed direct polycondensation. The products were characterized by GPC and 1H NMR. The results indicated that the molecular weight of the prepared polymers decreased with increasing L-malic acid content in the monomer feed ratio, and that change in the L-malic acid content from 0 to 20 mol % did not remarkably influenced on the molecular weight distribution Mw /Ma of the prepared samples. The 1H NMR spectra of the obtained copolymer samples showed that hydroxyl groups of L-malic acid did not take part in the polymerization reaction.

关 键 词：L-Malic acid POLYCONDENSATION LIPASE polyester. 

分 类 号：O633.14[理学—高分子化学]