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

机构：[1]Univ St Etienne, Dept Chim, F-42023 St Etienne 2, France;[2]Univ St Etienne, CNRS, UMR 5223, Ingn Mat Polymeres IRMP, F-42023 St Etienne, France;[3]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2009

卷号：50

期号：5

起止页码：1109

外文期刊名：POLYMER

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000263955800005)】；

语种：英文

外文关键词：epsilon-Caprolactone; Ring-opening polymerization; Atom transfer radical polymerization

摘要：A new titanium alkoxide, Ti[OCH2CCl3](4), designed to combine the ring-opening polymerization (ROP) of epsilon-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 e-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(epsilon-caprolactone)-block-poly(n-butyl acrylate) (PCL-b-PBA) copolymer. (c) 2009 Elsevier Ltd. All rights reserved.