CHEMICAL MODIFICATION OF POLYSULFONE .2. GAS AND LIQUID PERMEABILITY OF POLYSULFONE POLYDIMETHYLSILOXANE GRAFT COPOLYMER MEMBRANES

被引：39
|
作者：
NAGASE, Y
NARUSE, A
MATSUI, K
机构：
[1] Sagami Chemical Research Center, Sagamihara, Kanagawa, 229, Nishi-Ohnuma
来源：
POLYMER | 1990年 / 31卷 / 01期
关键词：
gas permeability; graft copolymer; pervaporation; polysulphone/polydimethylsiloxane;
D O I：
10.1016/0032-3861(90)90361-2
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The gas and liquid permeabilities of polysulphone/polydimethylsiloxane (PSF/PDMS) graft copolymer membranes have been investigated. The permeability coefficients to nitrogen, oxygen, hydrogen, methane and carbon dioxide were evaluated. The gas permeability coefficients of the graft copolymer membranes were influenced by the PDMS content of the graft copolymer. In the region of >60wt% PDMS content, the oxygen permeability coefficient of PSF/PDMS graft copolymer membrane was (1-3) × 10-8 cm3 cm cm-2 s-1 cmHg-1. In addition, the permeability to methane and carbon dioxide was remarkably enhanced in comparison with PSF membrane. The introduction of PDMS chains greatly increased the diffusion coefficients of methane and carbon dioxide. In the case of pervaporation of aqueous ethanol solution, the preferential permeation of ethanol was observed through the graft copolymer membrane for which the PDMS content was >50wt%. © 1990.
引用
收藏
页码：121 / 125
页数：5
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