N-phenylmaleimide-maleic anhydride copolymers(NMA)were synthesized by solution polymerization and the structure of the copolymer was characterized through FT-IR.Nylon 6/N-phenylmaleimide-maleic anhydride(PA6/NMA)blends were prepared by melt blending method.The structure and properties of blends were investigated by SEM,DSC,TGA,heat distortion tester and rotational rheometer.FT-IR confirms that the N-PMI content in NMA increases with increment of N-PMI feeding amount;DSC and TGA show that the melting tempera...