文献类型：期刊文献

中文题名：全氟磺酸改性聚乙烯醇渗透汽化膜分离乙酸乙酯-水溶液

英文题名：Pervaporation Separation of Ethyl Acetate-Water Solutions through the Polyvinyl Alcohol Membranes Modified by Perfluorosulfonic Acid

作者：袁海宽[1];许振良[1];马晓华[1];魏永明[1];齐峻[1,2];曾义红[1,2]

机构：[1]华东理工大学化学工程研究所化学工程联合国家重点实验室,上海200237;[2]上海吴泾化工有限公司,上海200241

年份：2009

卷号：23

期号：1

起止页码：131

中文期刊名：高校化学工程学报

外文期刊名：Journal of Chemical Engineering of Chinese Universities

收录：CSTPCD;;EI(收录号：20091211965903);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家“十一五”科技支撑计划重大项目(2006BAE02A01);上海华谊(集团)公司-华东理工大学先进化学与化工技术研究中心基金资助(A200-8608)

语种：中文

中文关键词：聚乙烯醇;全氟磺酸;渗透汽化;乙酸乙酯-水溶液

外文关键词：polyvinyl alcohol （PVA）; perfluorosulfonic acid （PFSA）; pervaporation; ethyl acetate-water solutions

摘要：以聚乙烯醇(PVA)为原材料,全氟磺酸(PFSA)为共混改性材料,以聚丙烯腈(PAN)中空纤维超滤膜为底膜制备了PVA/PAN、PVA-PFSA/PAN复合膜,并用于乙酸乙酯脱水。考察了共混涂膜液中PVA/PFSA配比,交联剂酒石酸(Tac)用量以及原料液温度与浓度对PVA/PAN、PVA-PFSA/PAN复合膜分离性能的影响。实验结果表明,Tac交联的PVA/PAN、PVA-PFSA/PAN复合膜均对水具有较好的分离选择性。共混涂膜液中PVA/PFSA质量比为1/1、Tac/PVA质量比为1/5时所制备的PVA-PFSA/PAN复合膜渗透汽化分离性能最佳。40℃下此复合膜用于分离98%(wt)的乙酸乙酯水溶液时,其渗透通量和分离因子分别为81.1g·m-2·h-1和1890。同样条件下,与交联PVA/PAN复合膜相比,交联PVA-PFSA/PAN复合膜的渗透通量显著提高。
Using polyvinyl alcohol （PVA） as coating material, perfluorosulfonic acid （PFSA） as modifier and the hollow fiber ultrafiltration membrane of polyacrylonitrile （PAN） as support layer, the PVA/PAN and PVA-PFSA/PAN composite pervaporation membranes used for the dehydration of ethyl acetate （t^Ac）-water solution were prepared by impregnation method, respectively. The effects of the mass ratio of PVA/PFSA in coating solution, the dosage of the cross-linking agent Tac （tartaric acid）, the dehydration temperature and the EAc concentration of the dehydrated solution on the pervaporation performance of prepared PEA/PAN and PVA-PFSA/PAN composite membranes were investigated The results show that both the PVA/PAN and PVA-PFSA/PAN composite membranes exhibit good water separation properties. The PVA-PFSA/PAN composite membrane prepared has the best pervaporation performance when the mass ratios of PVA/PFSA and Tac/PVA in coating solution are 1/1 and 1/5, respectively. When the PVA-PFSA/PAN composite membrane was used tbr the separation of 98%（wt） EAc aqueous solution at 40℃, the total permeation flux （J） reaches 81.1 g·m^-2·h^-1, and the separation factor （α） is 1890; Under the same dehydration conditions, the permeation flux of PVA-PFSA/PAN composite membrane is remarkably higher than that of PVA/PAN composite membrane.