SYNTHESIS OF EXFOLIATED ISOTACTIC POLYPROPYLENE/FUNCTIONAL ALKYL-TRIPHENYLPHOSPHONIUM-MODIFIED CLAY NANOCOMPOSITES BY IN SITU POLYMERIZATION

作     者：Kai Du 贺爱华 Fu-yong Bi Charles C.Han 

作者机构：Fine Chemicals DepartmentBeijing Research Institute of Chemical IndustrySINOPEC State Key Laboratory of Polymer Physics and ChemistryJoint Laboratory of Polymer Science and MaterialsBeijing National Laboratory for Molecular ScienceInstitute of ChemistryChinese Academy of Sciences Key Laboratory of Rubber-PlasticsMinistry of Education/Shandong Provincial Key Laboratory of Rubber-PlasticsSchool of Polymer Science and EngineeringQingdao University of Science and Technology State Key Laboratory of Polymer Physics and ChemistryJoint Laboratory of Polymer Science and MaterialsBeijingNational Laboratory for Molecular ScienceInstitute of ChemistryChinese Academy of Sciences 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2013年第31卷第11期

页      面：1501-1508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：financially supported by the National Natural Science Foundation of China(Nos.20774098,21174074 and 51003050) the National Key Technology R&D Program of China(No.2011BAE26B05) Shandong Province Natural Science Fund for Distinguished Young Scholars(No.JQ201213) 

主　　题：Clay Nanocomposites Poly(propylene) (PP) Ziegler-Natta polymerization. 

摘      要：Diphenyl （4-hydroxyphenyl） hexadecyl phosphonium bromide （POH） -modified montmorillonite （POHMMT） was used to prepare a novel TiC14/MgC12/POHMMT compound catalyst and exfoliated iPP/POHMMT nanocomposites were prepared by the in situ intercalative polymerization of propylene with the TiC14/MgC12/POHMMT compound catalyst. The POH surfactants don＇t change the catalytic characteristic of the Z-N catalyst and the obtained PP presents high isotacticity, normal molecular weight and molecular weight distribution. The WAXD, SAXS and TEM results demonstrate the highly exfoliated iPP/POHMMT nanocomposites were produced by the in situ polymerization with this novel catalyst, while the intercalated iPP/Na＋MMT nanocomposites were produced with the TiC14/MgC12/Na＋MMT compound catalyst. Through this approach, in situ propylene polymerization can actually take place between the silicate layers and lead not only to PP with high isotacticity and molecular weight, but also to highly exfoliated PP nanocomposites.