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] Ingénierie des Matériaux Polymères/LRMP, UMR CNRS 5223, Université Jean Monnet, 23 rue du Dr Paul Michelon, 42023 Saint-Etienne, Cedex 2, France; [2] Institute of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, 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：EI(收录号：20085011775180)

语种：英文

外文关键词：Catalysts - Crosslinking - Nuclear magnetic resonance - Titanium compounds - Kinetics - Thermogravimetric analysis - Activation energy - Tensile strength - Tensile testing

摘要：Ti[O(CH2)4OCH=CH2]4, used for the ring-opening polymerization (ROP) of Ε-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 (1H NMR) and thermogravimetric analysis (TGA). The mechanism and kinetics of Ti[O(CH2)4OCH=CH 2]4-initiated bulk polymerization of e-caprolactone were investigated. The results demonstrate that Ti[O (CH2) 4OCH=CH2]4-initiated polymerization of Ε-caprolactone proceeds through the coordination-insertion mechanism, and all the four alkoxide arms in Ti[O (CH2)4OCH=CH 2]4 share a similar activity in initiating ROP of Ε-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(6-caprolactone)-poly (n-butyl acrylate) network by using Ti[O(CH2)4OCH=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. ? 2008 Wiley Periodicals, Inc.