A Series of Rare Earth Phenolates Substituted by Alkyl Groups for D,L-Lactide Ring-Opening Polymerization

作     者：王艳 张丽芳 WANG Yan,NIU Yanhui,ZHANG Lifang,WANG Pei,SHEN Lijuan(Institute of Material Chemistry,Shanxi Normal University,Linfen 041004,China)

作者机构：Institute of Material ChemistryShanxi Normal University 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2011年第26卷第5期

页      面：939-944页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Funded by the Natural Science Foundation of Shanxi Province (No.2006011069) the Opening Foundation of Key Laboratory of Shanxi Province (No.2009011059-7) 

主　　题：ring-opening polymerization D L-lactide rare earth phenolates 

摘      要：Single component rare earth phenolates substituted by various alkyl groups have been prepared and the correlation between the aryloxides＇ structure and catalytic activity in the ring-opening polymerization of D,L-lactide has also been *** catalytic activity of all rare earth aryloxides,characteristics of the ring-opening polymerization as well as polymerization kinetics and mechanism were *** results showed that both phenolates＇ catalytic activities and polymerization characteristics changed regularly,keeping in good concordance with variations in substitutents＇ number on phenol and structure of aryloxide *** stronger ability of electron-donation of alkyl groups,the higher catalytic ***,the more numbers of substituted alkyl on phenyl ring,the higher catalytic *** analyses of polymer ends revealed that the polymerization proceeded via a coordination-acyl-oxygen bond cleavage-insertion mechanism.