Effect of 2,4-Dihydroxy Benzophenone and Its Derivatives on Ultraviolet Resistance of Polycarbonate

Three kinds of films designated as PC,PC/UV-0 and PC/PMMA-g-UV-0 were prepared by solution method.The configurations of these films before and after ultraviolet(UV) radiation were investigated by Fourier transform infrared spectroscopy(FT-IR),ultraviolet-visible absorption spectroscopy(UV-Vis),differential scanning calorimeter(DSC) and intrinsic viscosity measurements.The effect of UV-0 and PMMA-g-UV-0 on the UV-resistant performance of polycarbonate was also researched.The results indicate that UV-0 and PMMA-g-UV-0 can restrain structural change of polycarbonate when it was radiated by UV,and hence enhance the UV-resistant performance of polycarbonate.