文献类型：期刊文献

英文题名：Synthesis of poly(Ε-caprolactone)-block-poly(n-butyl acrylate) by combining ring-opening polymerization and atom transfer radical polymerization with Ti[OCH2CCl3]4 as difunctional initiator: I. Kinetic study of Ti[OCH2CCl3]4 initiated ring-opening polymerization of Ε-caprolactone

作者：Li, Peichun[1,3]; Zerroukhi, Amar[2]; Chen, Jianding[3]; Chalamet, Yvan[1]; Jeanmaire, Thomas[2]; Xia, Zhean[3]

机构：[1] Ingénierie des Matériaux Polymères/LRMP, UMR CNRS 5223, Université Jean Monnet, 23 rue du Dr Paul Michelon, 42023 Saint-Etienne Cedex 2, France; [2] Université Jean Monnet, Département de Chimie, 23 rue du Dr Paul Michelon, 42023 Saint-Etienne Cedex 2, France; [3] School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2009

卷号：50

期号：5

起止页码：1109

外文期刊名：Polymer

收录：EI(收录号：20090811917281)

语种：英文

外文关键词：Activation energy - Atom transfer radical polymerization - Titanium compounds - Atoms - Kinetics

摘要：A new titanium alkoxide, Ti[OCH2CCl3]4, designed to combine the ring-opening polymerization (ROP) of Ε-caprolactone and atom transfer radical polymerization (ATRP) of n-butyl acrylate, was synthesized through the ester-exchange reaction of titanium n-propoxide and 2,2,2-trichloroethanol. The mechanism and kinetics of Ti[OCH2CCl3]4 initiated bulk polymerization of Ε-caprolactone were studied. The results demonstrate that the polymerization proceeds through the coordination-insertion mechanism and all the four alkoxide groups in Ti[OCH2CCl3]4 share a similar activity in the initiation. The determined polymerization activation energy is 70 kJ/mol. The polymerization process can be well predicted by the obtained kinetic parameters. Furthermore, PCL synthesized with Ti[OCH2CCl3]4 can be used as the macroinitiator in ATRP of n-butyl acrylate to synthesize poly(Ε-caprolactone)-block-poly(n-butyl acrylate) (PCL-b-PBA) copolymer. ? 2009 Elsevier Ltd. All rights reserved.