可凝性气体在聚合物膜中的“非常规”渗透行为  

THE'UNUSUAL' PERMEATING BEHAVIORS OF CONDENSABLE GAS THROUGH POLYMER MEMBRANE

作　　者：刘丽[1] 陈勇[1] 李恕广[1] 邓麦村[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《高分子材料科学与工程》2001年第6期6-9,共4页Polymer Materials Science & Engineering

摘　　要：可凝性气体分离如有机蒸气脱除与回收、气体脱湿等是近年来气体膜分离研究和应用的热点。与永久性气体相比 ,可凝性气体在聚合物膜中表现出一些“非常规”渗透行为。由于分子之间存在相互作用 ,聚合物膜中可凝性气体分子存在成簇迁移、聚合物溶胀和毛细管凝聚等现象。文中对这些渗透行为进行了总结和分析 。Membrane separation processes with condensable gas such as water vapor removing from industrial gases and organic vapor recovery or separation are being developed recently and have great potential. Condensable gas exhibits some unusual behavior in polymer membrane compared with permanent gas. Cluster moving and swelling may occur as well as condensation in the tiny pores of membrane for the interaction of molecules, which lead to the pemeation of condensable gas deviating from the solution diffusion mechanism that permanent gas obeys. The permeation behaviors of condensation gas were summarized and their effects on membrane separation process were also discussed in this paper.

关 键 词：可凝性气体 聚合物膜 成族 凝聚 溶胀 气体分离 渗透 

分 类 号：TQ028.8[化学工程] TQ051.893