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% .
出处
《合成树脂及塑料》
CAS
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
关键词
碱金属盐
聚乙烯醇
马来酸酯化交联膜
改性
alkali metal
poly (vinyl alcohol) -maleic acid membrane
pervaporation
membrane structure
membrane separation
aqueous ethanol solution
