Influence of γ-ray irradiation on the structure and gas separation of polyimide membrane
Li Bolong1, Liu Yang2, Jiu Yongbin2, Zhou Chengfei2, Li Yeqing3, Wang Liancai2
1.Beijing Radiation Center,Beijing 100875; 2.Beijing Key Laboratory of Radiation Advanced Materials,Beijing Research Center for Radiation Application,Beijing 100015; 3.Institute of New Energy,China University of Petroleum,Beijing 10224
Abstract: The effect of γ-ray irradiation on the performance of polyimide gas separation membranes was investigated.After γ-ray irradiation in different doses,the structure and gas separation performance of membranes were studied by fourier transform infrared spectroscopy,thermogravimetric analysis and gas permeation instrument.The results showed that 60Co γ-ray had a certain effect on the structure of membranes,the chain scission was considered to be the predominant reaction,the chemical bond break due to the ring-open reaction during the radiation process.When absorbed dose reached 50kGy,the permeation flux of membrane appeared a maximum value.Moreover,the gas selectivity of membrane showed a consistent trend,and the selectivity continuously improved with increasing absorbed doses.
李伯龙, 刘暘, 酒永斌, 周成飞, 李叶青, 王连才. γ射线对聚酰亚胺膜结构及气体分离性能的影响[J]. 化工新型材料, 2018, 46(9): 74-76.
Li Bolong, Liu Yang, Jiu Yongbin, Zhou Chengfei, Li Yeqing, Wang Liancai. Influence of γ-ray irradiation on the structure and gas separation of polyimide membrane. New Chemical Materials, 2018, 46(9): 74-76.
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