Abstract: Calcium oxide and rare earth metal photosensitive compound were used as fillers to prepare the environmentally degradable CaO/PEfilm.The film was subjected to artificially accelerated and natura exposure agings, and subsequently the environmental degradability was characterized using FTIR, TG- IR, and SEM.Itshowed that the CaO/PE film had both photo and thermal-degradability. In addi- tion, the CaO/PE films discharged little poisonous gases when incinerated.

Key words: calcium oxide; , rare earth metal photosensitive pound, polyethylene, environmental degradability, light degradability, heat degradability