Grafting of acrylamide on cellulose acetate films was carried out in visible light using colloidal Fe2O3 as the photosensitizer. pH studies show that grafting is maximum at pH 6.0. Fourier transform infrared studies show that grafting occurs through the vinyl group of acrylamide. Grafting changes the tensile strength of the films, which has been probed through acoustic studies. X-ray diffraction studies show the amorphous nature of these films even after grafting.