Compounding ratio effect on high-pressure crystallization behaviours of PET/PC blends was investigated by SEM and WAXD measurements.SEM observation revealed that three kinds of crystal morphology formed orderly with the increase of PC ratio,i.e.extended-chain crystal,grownup stereo-open spherulite and large size spherulite.Total crystallinity of various samples obtained from WAXD results showed a decreasing tendency with the increasing of PC ratio.This is explained by the crystallization rate difference bet...