BROMINATION OF POLY-1-TRIMETHYLSILYLPROPYNE MEMBRANE AND ITS GAS PERMEATION PROPERTIES

Chinese Journal of Applied Chemistry ›› 1993, Vol. 0 ›› Issue (5): 75-77.

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BROMINATION OF POLY-1-TRIMETHYLSILYLPROPYNE MEMBRANE AND ITS GAS PERMEATION PROPERTIES

Zheng Guodong, Xu Guanfan, Xiao Jun, Zhang Jinlan, Wen Jiumian, Sun Xiaoguang, Qiu Xuepeng, Xu Jiping

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun

Received:1992-02-14 Revised:1993-03-31 Published:1993-10-10 Online:1993-10-10

Abstract

Abstract: The bromination of poly-1-trimethylsilylpropyne (PTMSP) membrane with N-bromosuc-cinimide in acetone and nitrogen diluted bromine vapor(Br₂/N₂ volume ratio:0.20～1.00) have been investigated. The machanism of the bromination and the relationship between gas permeation and microstructure of the brominated PTMSP membranes are discussed. A significant breakdown of siliconcarbon bond, which was found in the fluorination of PTMSP, does not take place during bromination.Bromination increased the separation factor of membrane (ao₂N₂) from 1.54 to 3.48,but only slightly improved its stability as gas permeation membrane. It is however with a marked decrease of the permeability coefficient of oxygene Po₂.

Key words: polytrimethylsilylpropyne, bromination, membrane, gas permeation

Zheng Guodong, Xu Guanfan, Xiao Jun, Zhang Jinlan, Wen Jiumian, Sun Xiaoguang, Qiu Xuepeng, Xu Jiping. BROMINATION OF POLY-1-TRIMETHYLSILYLPROPYNE MEMBRANE AND ITS GAS PERMEATION PROPERTIES[J]. Chinese Journal of Applied Chemistry, 1993, 0(5): 75-77.

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BROMINATION OF POLY-1-TRIMETHYLSILYLPROPYNE MEMBRANE AND ITS GAS PERMEATION PROPERTIES

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