Controlling the thermornechanical properties of polymer nanocomposites by tailoring the polymer-particle interface
Controlling the thermornechanical properties of polymer nanocomposites by tailoring the polymer-particle interface
复制标题
DOI：
10.1002/polb.20926
复制
发表时间：
2006-10-15
影响因子：
--
通讯作者：
Schadler, Linda S.
中科院分区：
文献类型：
--
作者：
Bansal, Amitabh;Yang, Hoichang;Schadler, Linda S.
我们发现，聚合物纳米复合材料的热机械性能的严重影响的聚合物颗粒的润湿行为。用聚合度为1050的致密聚苯乙烯刷接枝的二氧化硅纳米颗粒与聚苯乙烯熔体共混以形成纳米复合材料。发现长度< 880的低分子量（MW）聚苯乙烯熔体润湿这些颗粒。同时，纳米复合材料的玻璃化转变温度（T-g）增加。在较高的MW下，基质不润湿颗粒并且T-g降低。(c)2006 Wiley Periodicals，Inc.
We show that the thermomechanical properties of polymer nanocomposites are critically affected by polymer-particle wetting behavior. Silica nanoparticles grafted with dense polystyrene brushes of degree of polymerization 1050 are blended with polystyrene melts to form nanocomposites. It was found that low molecular weight (MW) polystyrene melts with lengths < 880 wet these particles. Concurrently, the glass transition temperature (T-g) of the nanocomposite increases. At higher MW, the matrix does not wet the particles and the T-g decreases. (c) 2006 Wiley Periodicals, Inc.