应用化学2009，Vol.26Issue(10)：1129-1133,5.
双路易斯酸催化原位增容乙烯辛烯共聚物/聚苯乙烯的共混物
Combined Lewis Acids Catalysed in-situ Compatibilization of Poly(octene-ethylene) and Polystyrene Blends
摘要
Abstract
A new type of combined catalyst of Lewis acids, Me_3SiCl and InCl_3·4H_2O, that can catalyze Friedel-Crafts alkylation reaction between POE and PS in the molten state was studied. The existence of grafted copolymer was testified by FTIR. SEM micrographs show that the size of the domains was decreased from 3～ 4 μm to less than 1 μm when the combined catalyst was added. Because the in-situ generated PS-g-POE copolymer could act as a compatibilizer in the blending system, the mechanical properties of the reacted blends were improved notably compared to that of the physical blends. For example, after compatibilization, the Izod impact strength of the m(POE)∶ m(PS) blend (40∶ 60) was increased from 1.9 kJ/m~2 to 9.7 kJ/m~2 and its elongation at break increased from 3.4% to 46.3%. The complex viscosity of the reacted blends within the low frequency range showed a higher value than that of the physical blends, indicating the increased interactions between POE and PS.关键词
反应共混/增容/接枝物/乙烯辛烯共聚物/聚苯乙烯Key words
reactive blend/compatibilization/graft copolymer/polyethylene octane copolymer/polystyrene分类
化学化工引用本文复制引用
刘焱龙,柯卓,尹立刚,石强,殷敬华..双路易斯酸催化原位增容乙烯辛烯共聚物/聚苯乙烯的共混物[J].应用化学,2009,26(10):1129-1133,5.基金项目
国家自然科学基金重点(50833005)和国家自然科学基金青年基金(50803061)资助项目 （50833005）
