关于聚苯乙烯的摩尔质量分布与性能

The Molecular Weight Distribution and The Behavior of Polystyrene

对国内外聚苯乙烯的摩尔质量分布的渗透色谱法测定结果,结合有关性能进行了分析和讨论,表明熔融指数不仅随重均摩尔质量的增高而变小,而且和摩尔质量分布有关。国内某些厂(批)的聚苯乙烯性脆问题与低聚物含量较多有关。

The molecular weight distribution(MWD) and behavior of polystyrene have been investigated. It is shown that the melt index of polystyrene decreases with the increase of weight- average molecular weight on condition that MWD is near,or with the decrease of MWD on condition that MW is near.