碱金属盐改性PVA-MA酯化交联膜的制备与表征  

Preparation and Characterization of Alkali Metal Salt Improved PVA - MA Pervaporation Membrane

作　　者：孟平蕊[1] 李良波[1] 孟桂芳 陈翠仙[2] 蒋维钧[2] 

机构地区：[1]山东建材学院化工系,济南250022 [2]清华大学化工系,北京100084

出　　处：《合成树脂及塑料》2000年第6期6-8,共3页China Synthetic Resin and Plastics

基　　金："九五"国家科技攻关资助项目 96-A13-01-06

摘　　要：以红外光谱和扫描电子显微镜表征碱金属盐改性聚乙烯醇(PVA)-马来酸(MA)酯化交联膜的结构与表面形态。研究了含碱金属盐PVA-MA交联膜对乙醇-水混合物的分离性能。盐含量低于6％(质量分数)时,膜的渗透通量明显增加,原料液乙醇浓度为95％时,分离系数也增大。The structure and surface morphology of alkali metal salt improved poly (vinyl alcohol) (PVA) - maleic acid (MA) membranes was characterized by infrared spectrometry (IR) and scanning electron microscopy (SEM). The separation of ethanol/ water mixture system via pervaporation with the cross - linked PVA - MA membrane containing alkali - metal salt was studied. The flux increased markedly when the salt content was less than 6% in the dry membrane; the separation coefficient increased when the ethanol concentration in feed solution reached 95% .

关 键 词：碱金属盐 聚乙烯醇 马来酸酯化交联膜 改性 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]