文献类型：期刊文献

中文题名：路易斯酸用量对POE/PS间Friedel-Crafts烷基化反应及共混物力学性能的影响

英文题名：The effects of Lewis Acid Amount on Friedel-Crafts Alkylation Reaction and Mechanical Properties of POE/PS Blends

作者：徐建平[1];承民联[1];龚方红[1];刘建忠[1];陈建定[2]

机构：[1]江苏工业学院材料科学与工程系,江苏常州213016;[2]华东理工大学材料学院,上海200237

年份：2006

卷号：22

期号：6

起止页码：145

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：江苏省自然科学基金(BK2003028)资助项目

语种：中文

中文关键词：聚烯烃弹性体(POE);聚苯乙烯(PS);Friedel—crafts烷基化反应;就地增容

外文关键词：polyolefin elastomer ; polystyrene ; Friedel-crafts alkylation ; solubilization in-place

摘要：用IR,DSC,GPC研究了聚苯乙烯(PS)与聚烯烃弹性体(POE)大分子之间的F riede l-crafts烷基化反应。结果表明:在无水A lC l3催化作用下,PS与POE间可发生质子取代反应生成接枝共聚物POE-g-PS,其接枝百分比随A lC l3用量增加先上升后下降;过量的催化剂会导致聚合物降解;接枝共聚物对POE/PS共混物具有明显的就地增容作用,对于POE/PS/A lC l3=50/50/0.2(质量比)共混物,其拉伸强度与简单共混体系相比,提高了4倍,断裂伸长率提高了10倍。
In this paper, a copolymer of POE-g-PS could be formed during melt blending of polystyrene/polyolefin elastomer （PS/POE） blends via a Friedel-crafts benzene ring alkylation of the PS. The effects of the amount of anhydrous aluminum chloride on the grafting-percent-ratio and the degradation of polymer were examined. The results show： there are competing reaction between grafting and degradation in the blending system. When anhydrous aluminum chloride is low 0.2 g/100 g blends, the grafting play an important rule, but When anhydrous aluminum chloride is high 0. 2 g/100 g blends, The degradation of the blends play an important rule. The excellent mechanical property can be acquired for POE/PS= 50/50 blends by adding 0.2 g anhydrous aluminum chloride, the tensile strength is a 4- fold increase and elongation at break is a 10- fold increase compared with mechanical blends.