ENHANCED MECHANICAL PROPERTIES OF POLYPROPYLENE/SILICA NANOCOMPOSITES WITH SURFACE MODIFICATION OF NANO-SILICA VIA IN SITU COPOLYMERIZATION OF METHYL METHACRYLATE AND BUTYL ACRYLATE  

作　　者：Yiu-wing Mai 

机构地区：[1]Center for Advanced Materials Technology,School of Aerospace,Mechanical and Mechatronic Engineering,J07,University of Sydney

出　　处：《Chinese Journal of Polymer Science》2009年第5期685-694,共10页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No50573026);Program forNew Century Excellent Talents in Universities of China(NCET-05-0640);Opening Fund of Hubei Key Laboratory ofNovel Reactor & Green Chemical Technology(NoSQ2004-15)

摘　　要：Nano-sized silica particles were modified with methacryloxy-propyltrimethoxysilane(MPS) followed by in situ copolymerization of methyl methacrylate(MMA) and butyl acrylate(BA).These modified nanoparticles were compounded with polypropylene(PP) to prepare PP/silica nanocomposites.PMMA grafted on nano-silica enhances the dispersion of the nanoparticles and interfacial adhesion,decreases the size of PP spherulites in nanocomposites and leads to increasing the Young's modulus and toughness of PP/silica nanocomp...Nano-sized silica particles were modified with methacryloxy-propyltrimethoxysilane(MPS) followed by in situ copolymerization of methyl methacrylate(MMA) and butyl acrylate(BA).These modified nanoparticles were compounded with polypropylene(PP) to prepare PP/silica nanocomposites.PMMA grafted on nano-silica enhances the dispersion of the nanoparticles and interfacial adhesion,decreases the size of PP spherulites in nanocomposites and leads to increasing the Young's modulus and toughness of PP/silica nanocomp...

关 键 词：Nano composites Interface Mechanical properties. 

分 类 号：O631.3[理学—高分子化学]