XPS STUDIES ON SURFACE MODIFIED POLY [1-(TRIMETHYLSILYL)-1-PROPYNE] MEMBRANES Ⅱ SURFACE MODIFICATION BY BROMINE VAPOR*

XU Guanfan; SUN Xiaoguang; QIU Xuepeng; ZHANG Jinlan; ZHENG Guodong

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XPS STUDIES ON SURFACE MODIFIED POLY [1-(TRIMETHYLSILYL)-1-PROPYNE] MEMBRANES Ⅱ SURFACE MODIFICATION BY BROMINE VAPOR*

Papers | Updated：2021-06-21

- XPS STUDIES ON SURFACE MODIFIED POLY [1-(TRIMETHYLSILYL)-1-PROPYNE] MEMBRANES Ⅱ SURFACE MODIFICATION BY BROMINE VAPOR*
- Vol. 12, Issue 2, Pages: 180-184(1994)
- Affiliations：
  
  1.   Changchun Institute of Applied Chemistry
  2.   Academia Sinica
  3.   Changchun 130022
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XU Guanfan, SUN Xiaoguang, QIU Xuepeng, et al. XPS STUDIES ON SURFACE MODIFIED POLY [1-(TRIMETHYLSILYL)-1-PROPYNE] MEMBRANES Ⅱ SURFACE MODIFICATION BY BROMINE VAPOR*. [J]. 12(2):180-184(1994)
DOI：

XU Guanfan, SUN Xiaoguang, QIU Xuepeng, et al. XPS STUDIES ON SURFACE MODIFIED POLY [1-(TRIMETHYLSILYL)-1-PROPYNE] MEMBRANES Ⅱ SURFACE MODIFICATION BY BROMINE VAPOR*. [J]. 12(2):180-184(1994) DOI：

摘要

<,正,>, Surface modification of poly [1-（trimethylsilyl）-1-propyne] （PTMSP） membranes bybromine vapor has been studied. It is shown that Br/C atomic ratio at the surfaces increased withthe time of bromination until about 60 min, then it reached a plateau. The results of XPS and IRstudies indicated that the addition of bromine to double bonds and the replacement of H on CH,3, bybromine had taken place so that a new peak at 286.0 eV （C--Br）in C,1s, spectra and some newbands, e. g. at 1220 and 580cm,-1, in IR spectra were formed. The fact,t Po,2, permeability ofoxygen, decreased and α,O,2,/N,2, separation factor of oxygen relative to nitrogen, increased withbromination time, shows that surface modification of PTMSP by bromine may be an efficient approach to prepare PTMSP membranes used for practical gas separations.

Abstract

Surface modification of poly [1-（trimethylsilyl）-1-propyne] （PTMSP） membranes bybromine vapor has been studied. It is shown that Br/C atomic ratio at the surfaces increased withthe time of bromination until about 60 min, then it reached a plateau. The results of XPS and IRstudies indicated that the addition of bromine to double bonds and the replacement of H on CH,3, bybromine had taken place so that a new peak at 286.0 eV （C--Br）in C,1s, spectra and some newbands, e. g. at 1220 and 580cm,-1, in IR spectra were formed. The fact,t Po,2, permeability ofoxygen, decreased and α,O,2,/N,2, separation factor of oxygen relative to nitrogen, increased withbromination time, shows that surface modification of PTMSP by bromine may be an efficient approach to prepare PTMSP membranes used for practical gas separations.

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