It was found that the crystallinity of PPS powder decreased during the solid state curing, while its adverage crystallite volume and area of the basic planes of the crystallites increased.

• 结果表明,固相热处理使PPS粉末的结晶度下降,同时其平均晶粒体积和垂直于分子链轴方向的晶粒基平面面积增大。