PP／PS就地相容化研究  

In-Situ Compatibilization of PP/PS Blends

作　　者：徐建平[1,2] 承民联[1] 谢赟[1] 陈建定[2] 

机构地区：[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

出　　处：《高分子材料科学与工程》2009年第3期57-60,共4页Polymer Materials Science & Engineering

基　　金：江苏省自然科学基金资助项目(BK2003028)

摘　　要：考察了无水AlCl3用量对PP、PS大分子间Friedel-Crafts烷基化反应及PP/PS合金性能的影响。通过扭矩分析、接枝比和力学性能测定、界面形态的观察,结果表明,加入适量的无水AlCl3可以引发PP、PS间的Friedel-Crafts烷基化反应,生成的PP-g-PS接枝物能起到就地增容PP/PS的作用,使合金的力学性能得到显著提高;加大AlCl3用量后,由于其引起的PS、PP分子链的断链反应起主导作用,合金的性能降低。Effects of the amount of anhydrous aluminum chloride （AlCl3） on Friedel-Crafts alkylation reaction between polypropylene（PP） and polystyrene（PS） and properties of PP/PS blends were examined. The study on mechanic properties and interface morphology of PP/PS blends in the presence of AlCl3 showed that, with moderate catalyst amount, a copolymer of PP-g-PS can be formed during melt blending of PP/PS blends via a Friedel-Crafts benzene ring alkylation. The grafting co-polymer behaves as a compatilizer of PP/PS blends and improves their mechanical properties. However, when the amount of AlCl3 is increased, the properties of blends become worse due to the chain scission of PS and PP.

关 键 词：聚丙烯 聚苯乙烯 增容 FRIEDEL-CRAFTS烷基化反应 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]