Abstract: The effect of antioxidant 1010 on photo-degradation PE film was studied via UV irradiation. The structure and properties of PE film before and after UV aging were characterized using FT-IR, UV spectrum, and mechanical testing. Results indicated that antioxidant 1010 could inhibit the photo-degradation and reduce the amount and types of carbonyl entities during the UV irradiation on PE film. The reserved elongation at break of photo-degradation PE films were less than 80 % after 3 d UV-irradiation, while the reserved elongation at break of PE photo-degradation film containing 0.3 wt % antioxidant were less than 80 % after 4~5 d UV-irradiation，which showed that the induce period of PE films containing antioxidant had been prolonged.

Key words: polyethylene, antioxidant, photo-degradable film, structure, property