TiO_2 was coated with MPS in ethanol and water medium by adjusting pH value,TiO_2-MPS-g-PAN was prepared by copolymerization and grafting reaction of TiO_2-MPS and AN under the action of initiator in the solution.MPS,TiO_2-MPS and TiO_2-MPS-g-PAN were analyzed by FT-IR and XPS.The coating ratio and grafting ratio of TiO_2-MPS are respectively 5.79% and 13.93% confirmed by TG.The dispersion of TiO_2,TiO_2-MPS,TiO_2-MPS-g-PAN in PP was analyzed by infrared imaging.The results show that TiO_2-MPS-g-PAN has goo...