PS／CNTs复合材料中CNTs作用的研究  

Study on Effects of CNTs in PS/CNTs Composites

作　　者：石岩[1] 李相美[1] 何为凡[1] 徐学诚[1] 

机构地区：[1]华东师范大学纳米功能材料与器件应用研究中心,上海200062

出　　处：《华东师范大学学报（自然科学版）》2006年第5期116-120,共5页Journal of East China Normal University(Natural Science)

基　　金：上海市纳米科技专项基金资助项目(0252nm011)

摘　　要：利用悬浮聚合法制备了聚苯乙烯／碳纳米管复合材料．通过透射电镜观察到复合材料中CNTs包裹于PS粒子中,且PS粒子较纯PS粒子变大,并由动态光散射测试得到了证实．热重分析表明复合材料中PS最大失重速度时的温度较纯PS升高了约80℃．GPC的测定也反映出复合材料中PS的分子量较纯PS有较大幅度的提高．据此可以认为:在悬浮聚合法中,CNTs参与了PS的聚合反应,与PS形成了键合并使PS的聚合程度增加．PS/CNTs were prepared by a simple suspension polymerization method. TEM ima- ges showed that CNTs are wrapped in PS particles which are larger than pure PS particles, and it can be proved by DLS tests. TGA showed that the temperature of maximum speed on loss in weight of PS in composites is 80 ~C higher than that of pure PS. And GPC tests also showed that the molecular weight of PS in composites is much higher than that of pure PS. So the CNTs have joined the polymerization of PS and bonded with PS which lead to an increase in polymerization extent of PS.

关 键 词：聚苯乙烯/碳纳米管复合材料 透射电镜 动态光散射 热重分析 凝胶渗透色谱 

分 类 号：O632.13[理学—高分子化学]