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Citation: 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, 10(5): 75-77. shu

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

1.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun

Received Date: 14 February 1992
Available Online: 21 March 1993
Fund Project:

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 (a_O₂/N₂) 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 P_O₂.
- polytrimethylsilylpropyne,
- bromination,
- membrane,
- gas permeation
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