PC/PET/EPDM共混体系的形态结构

Morphology of PC/PET/EPDM Blends

用WAXS和SAXS研究了PC/PET/EPDM共混体系的形态结构。结果表明,PC,EPDM导致PET的晶片厚度、非晶层厚度及长周期增加,但不影响晶胞尺寸及夹角。该共混体系为晶区与非晶区界面分明的两相体系。

The crystal morphology of blends of polycarbonate (PC) with poly(ethylene terephthalate)(PET) and EPDM was investigated by means of wide- and small-angle X-ray scatering. It was found that the thickness of lamella and amorphous layer, and the long period, of PET were increased by the presence of PC and EPDM, whereas the unit cell dimensions and angles did not seem to be affected. It was suggested that the blend system of PC with PET and EPDM was a two-phase system with sharp crystalline-amorphous interface.