Removal of trace VOCs from water through PDMS membranes and analysis of their permeation behaviors
Removal of trace VOCs from water through PDMS membranes and analysis of their permeation behaviors
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DOI：
10.1002/(sici)1097-4628(19990725)73:4
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发表时间：
1999-07
影响因子：
3
通讯作者：
C. Yeom;H. K. Kim;J. Rhim
中科院分区：
文献类型：
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作者：
C. Yeom;H. K. Kim;J. Rhim
采用加成交联法制备了聚二甲基硅氧烷，对水中痕量氯代烃进行了脱除。该膜比缩合反应制备的膜具有更强的疏水性，因为它在聚合链中没有极性基团，如羟基和氯基团。本研究主要比较了同源系列氯甲烷水溶液与氯乙烷溶液的渗透行为。结果表明，当膜系统的疏水特性较大时，膜中的水分子倾向于以簇的形式存在；从而增大了水组分的渗透尺寸，从而抑制了水的渗透，增加了有机组分的富集系数。用浓度极化效应、有机膜和水-有机膜相互作用效应间接解释了不同温度和膜厚度下的渗透行为。©1999 John Wiley & Sons, Inc高分子学报（自然科学版），2004 (3):1 - 6
The removal of trace chlorinated hydrocarbons from water has been performed through poly(dimethylsiloxane), which had been fabricated by addition crosslinking reaction. The membrane had a more hydrophobic characteristic than that fabricated by a condensation reaction because it has no polar groups in the polymeric chain, such as hydroxyl and chlorine groups. This study concentrated on the comparison of the permeation behaviors of homologous series of chloromethanes aqueous solutions with that of a chloroethane solution. It was suggested that when the hydrophobic characteristics of a membrane system is greater, water molecules in the membrane tend to exist in the form of clusters; thereby, the permeating size of water component increases, resulting in suppressing water permeation and increasing the enrichment factor for the organic component. The permeation behaviors at various temperatures and membrane thicknesses were indirectly interpreted in terms of the effect of concentration polarization and the effect of interactions of organic–membrane, and water–organic-absorbing membrane. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 601–611, 1999