Abstract: Polyvinyl alcohol(PVA)/polypropylene grafted maleic anhydride (PP-g-MAH) blend films were prepared by melting process. The differential scanning calorimetry (DSC) was adopted to develop the crystallization and melting behavior of the blends. Results showed that with the increasing of PP-g-MAH content （less than 50 %）, the crystallization and melting temperature of PVA phase increased, the crystallization rate rose,but crystallinity decreased. While with the increasing of PVA content（more than 30 %）, the crystallization and melting temperature of PP-g-MAH phase decreased, crystallinity decreased, but the crystallization rate increased. The nonisothermal crystallization kinetics of PVA phase in the blend was studied according to Ozawa′s theory. Results showed that the primary crystallization of PVA phase was in a temperature range of 191~197 ℃，secondary crystallization was in a temperature range of 173~189 ℃.

Key words: polypropylene grafted maleic anhydride, polyvinyl alcohol, melting blend, crystallization behavior