Research progress of UV degradation of PVC/styrene-containing polymer blends

This paper reviewed the research progress of UV degradation of poly(vinyl chloride)(PVC)/ styrene-containing polymers blends. The four styrene-containing polymers were acrylonitrile-butadiene-styrene copolymer(ABS), methyl methacrylate-butadiene-styrene copolymer(MBS), acrylonitrile-chlorinated polyethylene-styrene copolymer(ACS) and acrylonitrile-styrene-acrylate copolymer(ASA). The reason that the PVC/ABS and PVC/MBS blends showed poor aging resistance was that there were unsaturated double bonds in the main chain of ABS and MBS and the unsaturated double bonds occurred oxidative degradation easily by UV irradiation. On the contrary, the PVC/ACS and PVC/ASA blends showed relatively good aging resistance since there were no unsaturated double bonds in the main chain of ACS and ASA.