聚苯硫醚及其聚砜共混物的结晶形态研究

应用偏光显微镜、扫描电子显微镜及蚀刻的方法,研究了聚苯硫醚及其与聚砜共混物的结晶形态与织构。结果表明,经固相空气热处理的聚苯硫醚,其本体与表面区域的结晶形态有显著的不同;蚀刻择优发生于球晶的晶界上;随着聚砜组份的增加,共混物的织构从聚苯硫醚为连续相逐渐转变为聚砜为连续相,聚苯硫醚的球晶形态也逐渐变得不规整。

THE CRYSTALLINE MORPHOLOGIES OF POLYPHENYLENE SULFIDE AND ITS BLENDS WITH POLYSULFONE

By the use of polarized light microscopy, scanning elctron microscopy and chemical or solvent etching techniques, the crystalline morphologies of polyphenylene sulfide (PPS) and its blends with polysulfone (PSF) have been studied. It was found that for the PPS resin which was cured by heating in air, the crystalline morphologies in the bulk and in the surface region may be greatly different. Etching preferentially took place in the boundary of spherulites. With the increasing of PSF portion in the blend, the texture structure of blend changed gradually,e.g. a transform from a con-tinuous phase of PPS to a continuous phase f PSF,while the spherulite morphologies of PPS became irregular.