详细信息

PS/EPDM就地相容化  ( EI收录)  

In-Situ Compatiblization of PS/EPDM Blends

文献类型:期刊文献

中文题名:PS/EPDM就地相容化

英文题名:In-Situ Compatiblization of PS/EPDM Blends

作者:徐建平[1,2];焦淑瑞[2];陈建定[1]

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

年份:2011

卷号:27

期号:8

起止页码:95

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;;EI(收录号:20113914370564);Scopus;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;

基金:江苏省自然科学基金资助项目(BK2003028)

语种:中文

中文关键词:聚苯乙烯;乙丙三元橡胶;相容化;Friedel-Crafts烷基化反应

外文关键词:polystyrene; poly(ethylene-propylene-diene monomer); compatibilization; Friedel-Crafts alkylation

摘要:采用扭矩分析、凝胶含量和力学性能测定、共混物热分析、界面形态观察等方法考察了无水AlCl3用量对聚苯乙烯(PS)和乙丙三元橡胶(EPDM)大分子间Friedel-Crafts烷基化反应的影响。结果表明,加入适量的无水AlCl3可以引发PS、EPDM间的Friedel-Crafts烷基化反应,生成的EPDM-g-PS接枝物可以就地增容PS/EPDM共混物,合金的力学性能得到显著提高;此外,无水AlCl3还可以引发EPDM间产生阳离子聚合反应,生成凝胶;加大AlCl3用量后,由于其引起的PS、EPDM分子链的断链,合金的性能降低;热重分析显示,增容后,PS的最大分解速率温度得到提高。
Using torque analysis,determination of gel content and mechanical properties,thermal analysis,the interface morphology observation and other methods,effects of the amount of anhydrous aluminum chloride(AlCl3) on Friedel-Crafts alkylation reaction between poly(ethylene-propylene-diene monomer)(EPDM) and polystyrene(PS) were investigated.The results show that,by adding an appropriate amount of anhydrous AlCl3,a copolymer of EPDM-g-PS can be formed during melt blending of PS/EPDM blends via a Friedel-Crafts benzene ring alkylation.The EPDM-g-PS copolymer served as a compatibilizer and enhanced the mechanical properties of the EPDM/PS blends.In addition,anhydrous AlCl3 can also initiate the cross-linking of EPDM by cation polymerization.However,when the amount of AlCl3 is increased,the properties of blends become worse due to the chain scission of PS and EPDM.The thermogravimetric analysis shows the temperature of maximum decomposition rate of PS in the compatibilized PS/EPDM blends is raised.

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