插层聚合制备聚丙烯/蒙脱土纳米复合材料及其结构性能表征

将插层聚合的概念引入烯烃聚合，制备了聚丙烯／蒙脱土（PP／MMT）纳米复合材料。X射线衍射和TEM分析结果表明，蒙脱土在聚丙烯基体中达到了纳米级的分散，动态力学性能研究结果表明，在高于Tg的温度区域内PP／MMT纳米复合材料的储能模量（E′）成倍增加，加入8％的蒙脱土（MMT），PP／MMT的E′提高近3倍。PP／MMT的玻璃化转变温度Tg有一定程度的提高，随蒙脱土含量的增加，PP／MMT的热分解温度和热变形温度（HDT）都有大幅度提高。

Preparation and Characterization of Polypropylene/Montmorillonite Nanocomposites by Intercalative Polymerization

Polypropylene/montmorillonite(PP/MMT) nanocomposites were prepared %via% intercalative polymerization. The wide angle X|ray diffractometer(WAXD) patterns and the transmission electron microscope(TEM) images of the PP/MMT nanocomposites showed the MMT layers were exfoliated into nanometer size and dispersed uniformly in the PP matrix. The nanocomposites exhibited much higher storage modulus compared to that of pure PP. Especially at the temperature higher than %T%-g, the storage modulus of PP/clay nanocomposites was about three times that of pure PP. The maximum decomposition temperature and HDT of the nanocomposites remarkably increased with the increasing of MMT content.