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 

机构地区：[1]Fine Chemicals Department,Beijing Research Institute of Chemical Industry,SINOPEC [2]State Key Laboratory of Polymer Physics and Chemistry,Joint Laboratory of Polymer Science and Materials,Beijing National Laboratory for Molecular Science,Institute of Chemistry,Chinese Academy of Sciences [3]Key Laboratory of Rubber-Plastics,Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics,School of Polymer Science and Engineering,Qingdao University of Science and Technology [4]State Key Laboratory of Polymer Physics and Chemistry,Joint Laboratory of Polymer Science and Materials,BeijingNational Laboratory for Molecular Science,Institute of Chemistry,Chinese Academy of Sciences

出　　处：《Chinese Journal of Polymer Science》2013年第11期1501-1508,共8页高分子科学（英文版）

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)

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.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.

关 键 词：CLAY NANOCOMPOSITES Poly（propylene） （PP） Ziegler-Natta polymerization. 

分 类 号：O631.3[理学—高分子化学]