Electrochemical characterization of poly(vinyl alcohol)/formyl methyl pyridinium (PVA-FP) anion-exchange membranes

被引：62

作者：

Choi, YJ ^{[1
]}

Park, JM ^{[1
]}

Yeon, KH ^{[1
]}

Moon, SH ^{[1
]}

机构：

[1] GIST, Dept Environm Engn, Kwangju 500712, South Korea

来源：

JOURNAL OF MEMBRANE SCIENCE | 2005年 / 250卷 / 1-2期

关键词：

water-swollen; anion-exchange membrane; water-splitting; amino acid; ion transport; electrodialysis;

D O I：

10.1016/j.memsci.2004.10.034

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

To explore electrodialysis for purification of negatively charged large organic molecules (e.g., amino acids and medicine), water-swollen formyl methyl pyridinium-immobilized polyvinyl alcohol (PVA-FP) anion-exchange membranes were prepared and characterized in terms of their electrochemical properties. The PVA-FP membranes exhibited low electrical resistance (1.0-3.0 Omega cm(2)), high swelling properties (water content ratio, 0.62-0.73), and reasonable transport number ((t) over bar_ > 0.96 for Cl-). For glutamic acid solutions, the electrical resistance of the PVA-FP membrane was low (1.0-3.0 Omega cm(2)) in a wide pH range, with no membrane fouling. Since the resonance effect of quaternary aromatic ammonium contributed to the structural stability of the PVA-FP membrane, the water-splitting with the PVA-FP membrane was approximately one order of magnitude lower than that with a commercial ion-exchange membrane at a same current density. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：295 / 304

页数：10

共 29 条

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