Developement of New Polymer Membranes for Separation

新型聚合物分离膜的开发

基本信息

批准号：
60550644
负责人：
NAKAYAMA Morio
金额：
$ 1.09万
依托单位：
Kumamoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1986
项目状态：
已结题

项目摘要

Cationic exchange membranes were prepared with 2,3-epithiopropyl methacrylate(ETMA)-methacrylic acid(MAc),ETMA-2-phosphoethyl methacrylate(MP), and ETMA-2-acrylamide-2-methylpropane sulfonic acid(tertiary butyl acrylamide sulfonic acid) (TBAS) copolymers. Transporrt of alkali metal ions through the membranes was investigated by using the system containing acid(left side) and alkali or alkali earth metal ions(right side). All these copolymer membranes transported alkali metal ions from the right side to left side against their concentration gradient. In order to obtain the membrane with high ability of transport of metal ions against its concentration gradient, it was necessary to (1) increase the content of carrier such as carboxyl group, phosphoric acid group or sulfonic groups in the membrane in the composition range at which the membrane can be used without breaking because of high swelling, (2) make the membrane dense for <H^+> and <OH^-> not to diffuse simply through the membrane by the concentration gradient, and (3) depress the diffusion of anion such as <Cl^-> into the membrane. The transport of alkali metal ions through the ETMA-MP and ETMA-TBAS copolymer membrane is higher than that through the ETMA-MAc copolymer membrane. The transport rate, transport fraction of alkali metal ions , and the selective transport between alkali metal ions through the ETMA-MAc copolymer membrane could be increased by using the copolymer membranes irradiated with ultra violet light, because the physical and chemical structure of the membrane made of ETMA-MAc copolymer can be easily be changed by irradiation with ultra violet light. The transport in this system, where one side of the membrane in a cell was acidic and the other alkaline, was influenced significantly by the initial <H^+> concentration on the acidic side.

用2,3-上皮丙烯酸丙烯酸酯（ETMA） - 甲基丙烯酸（MAC），ETMA-2-磷酸甲基丙烯酸甲酯（MP）和ETMA-2-丙烯酰胺-2-丙烯酰胺-2-甲基丙烷硫酸硫酸硫酸硫酸硫酸硫酸（第三型丙烯酸硫酸硫酸）（TBAS）（TBAS）（TBAS）（TBAS）（TBAS）（TBAS）（TBAS），制备了阳离子交换膜。通过使用含有酸（左侧）和碱或碱基金属离子（右侧）的系统（右侧）的系统研究了碱金属离子的转型。所有这些共聚物膜将碱金属离子从右侧到左侧运输到其浓度梯度上。 In order to obtain the membrane with high ability of transport of metal ions against its concentration gradient, it was necessary to (1) increase the content of carrier such as carboxyl group, phosphoric acid group or sulfonic groups in the membrane in the composition range at which the membrane can be used without breaking because of high swelling, (2) make the membrane dense for <H^+> and <OH^-> not to diffuse simply through the membrane by the浓度梯度，（3）降低阴离子的扩散，例如<cl^ - >进入膜。碱金属离子通过ETMA-MP和ETMA-TBAS共聚物膜的转运高于通过ETMA-MAC共聚物膜的转运。可以通过使用用超紫色光照射的共聚物膜来增加传输速率，碱金属离子的运输速率，碱金属离子之间通过ETMA-MAC共聚物膜之间的选择性传输，因为ETMA-MAC共聚物的物理和化学结构可以通过ETMA-MAC共聚物来通过Ultra afrad riptair ipret ription righation righation imprane fights rightime flight。该系统中的转运，其中细胞中膜的一侧是酸性的，另一种碱性受到酸性侧的初始<H^+>浓度的显着影响。