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首页> 外文期刊>Journal of Applied Polymer Science >Electrotransport of organic electrolytes through 2-(dimethylamino)ethyl methacrylate-grafted polyethylene films and their separation and concentration
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Electrotransport of organic electrolytes through 2-(dimethylamino)ethyl methacrylate-grafted polyethylene films and their separation and concentration

机译：有机电解质通过甲基丙烯酸2-（二甲基氨基）乙酯接枝的聚乙烯薄膜的电迁移及其分离和浓缩

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摘要

Organic electrolytes with negatively chargeable functional groups such as benzoic acid (BA, weak acid), benzenesulfonic acid (BSA, strong acid), and p-aminobenzoic acid (p-ABA, ampholyte) were concentrated through polyethylene (PE) films photografted with 2-(dimethylamino)ethyl methacrylate (DMAEMA) by electrotransport. The permeabilities of DMAEMA-grafted PE (PE-g-PDMAEMA) films to BA and BSA were considerably increased by the application of direct current at pH 6. BA and BSA could be selectively permeated from the respective binary BA/phenyl-1,2-ethandiol (PhED, neutral) and BSA/PhED mixtures by making use of the difference in their permeabilities. In addition, BSA was selectively permeated from the binary BSA/BA mixtures. The organic electrolytes mentioned above were transported against their concentration gradient toward the anode side and their degrees of concentration went up to 90% by the continuous application of direct current. The degrees of concentration for organic electrolytes obtained by electrotransport in this study were slightly higher than those obtained by the uphill transport using the PH difference across the PE-g-PDMAEMA film, and the concentration time was considerably shortened. It was made clear that the electrotransport through the PE-g-PDMAEMA films is one of the effective techniques to selectively separate or concentrate organic electrolytes with negatively chargeable functional groups. (C) 2003 Wiley Periodicals, Inc. [References: 39]
机译：通过用2接枝的聚乙烯（PE）膜浓缩具有带负电荷的官能团的有机电解质，例如苯甲酸（BA，弱酸），苯磺酸（BSA，强酸）和对氨基苯甲酸（p-ABA，两性电解质）。 -通过电传输的甲基丙烯酸-（二甲氨基）乙酯（DMAEMA）。通过在pH值为6的直流电下，DMAEMA接枝的PE（PE-g-PDMAEMA）膜对BA和BSA的渗透性大大提高。可以从相应的二元BA /苯基-1,2中选择性渗透BA和BSA。 -乙二醇（PhED，中性）和BSA / PhED混合物，利用它们的渗透率差异。另外，从二元BSA / BA混合物中选择性渗透BSA。通过连续施加直流电，上述有机电解质以其浓度梯度向阳极侧输送，并且其浓度度高达90％。在这项研究中，通过电迁移获得的有机电解质的浓度度略高于通过上跨运输过程中使用的PE-g-PDMAEMA膜上的PH差获得的浓度，并且浓缩时间大大缩短。已经清楚地表明，通过PE-g-PDMAEMA膜的电传输是选择性分离或浓缩具有带负电的官能团的有机电解质的有效技术之一。 （C）2003 Wiley Periodicals，Inc. [参考：39]

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