文献类型：期刊文献

英文题名：Synthesis, Kinetic Study, and Application of Ti[O(CH₂)₄OCH=CH₂]₄ in Ring-Opening Polymerization of ε-Caprolactone and Radical Polymerization

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

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

年份：2008

卷号：46

期号：23

起止页码：7773

外文期刊名：JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000261582400015)】；

语种：英文

外文关键词：crosslinking; functionalization of polymers; kinetics (polym.); metal-organic catalysts/organometallic catalysts; radical polymerization; reactive extrusion; ring-opening polymerization

摘要：Ti[O(CH2)(4)OCH=CH2](4), used for the ring-opening polymerization (ROP) of epsilon-caprolactone, was synthesized through the ester-exchange reaction of titanium n-propoxide and 1,4-butanediol vinyl ether, and its chemical structure was confirmed by nuclear magnetic resonance (H-1 NMR) and thermogravimetric analysis (TGA). The mechanism and kinetics of Ti[O(CH2)(4)OCH=CH2](4)-initiated bulk polymerization of e-caprolactone were investigated. The results demonstrate that Ti[O (CH2)(4)OCH=CH2](4)-initiated polymerization of epsilon-caprolactone proceeds through the coordination-insertion mechanism, and all the four alkoxide arms in Ti[O (CH2)(4)OCH=CH2](4) share a similar activity in initiating ROP of epsilon-caprolactone. The polymerization process can be well predicted by the obtained kinetic parameters, and the activation energy is 106 KJ/mol. Then, the rheological method was employed to investigate the feasibility of producing the crosslinked poly(epsilon-caprolactone)-poly (n-butyl acrylate) network by using Ti[O(CH2)(4)OCH=CH2](4) as the ROP initiator. The tensile test demonstrates that the in situ generated crosslinked PCL-PBA network in PMMA matrix provides the possibility of ameliorating the tensile properties of PMMA. (C) 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46:7773-7784,2008