Abstract: The non-isothermal crystallization kinetics of PP, PA6， and the blends of PP/PA6 compatibilized with a copolymers (PAG) of α-methyl styrene (AMS) and glycidyl methacrylate (GMA) was studied by means of differential scanning calorimetry(DSC). Jeziorny method was used to analyze the crystallization kinetics parameters. It showed that the peak crystallization temperatures and the crystallization heat enthalpies of both PP and PA6 in PP/PA6/PAG all decreased while the semi-crystallization time increased. These results demonstrated that there have some chemical reactions occured when PAGs were added into the blends. Within the cooling rate of 2.5～40 ℃/min, the amended Avrami model can well describe the non-isothermal crystallization process of PP，PA6，PP/PA6，and PP/PA6/PAG.

Key words: polypropylene, polyamide 6, compatibilization, blend, non-isothermal crystallization