loadingTransport Process of Isopropanol Aqueous
Solution by Pervaporation
作者机构：Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China;Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China;Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China;Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China 来源：天津大学学报（英文版） ISSN：1006-4982 年：2007 卷：013 期：004 页码：263-269 页数：7 中图分类：TP3 正文语种：chi
关键词：model; permeate flux; isopropanol; water; pervaporation 摘要：To study the transport process of isopropanol aqueous solution by pervaporation, the transport model of isopropanol and that of water at 323 K in polyvinyl alcohol(PVA) membrane were obtained in this paper. Theoretical predictions agreed well with the experimental results. The interactional parameter between water and PVA membrane is less than that between isopropanol and PVA membrane, which shows that water is preferentially dissolved in PVA membrane. The plasticizing coefficient and diffusion coefficient at infinite dilution of water are larger than those of isopropanol,which shows that the dissolution and