Abstract: The non-isothermal crystallization behavior of dynamically cured polypropylene(PP)/epoxy(EP) blends compatibilizcd with malcic anhydride grafted PP(PP-g-M八H) was studied with difFcrcn-tial scanning calorimetry. The experiment data were treated with Ozawa and Kissinger equations, the
crystalline structure of PP in the blends was also studied. It showed that the cured epoxy particles acccl-crate the crystallization of PP component. The non-isothermal crystallization kinetics of both neat PP and PP in the blends can be well approximated by Ozawa equation, and the kinetic constant K(T) of PP in blends was higher than that of neat PP.八ccording to Kissingcr'、method，the crystallization acti-vation(OF_)of PP in the blends was lower than that of neat PP, and a minimum of OF_ was observed at an epoxy resin weight concentration of 20 phr. Polarized optical microscopy showed that the size of neatPP spherulites was obviously larger than those in blends.

Key words: polypropylene, epoxy resin, dynamical cure, non-isothermal crystallization, crystallization kinetics