Metadata of CSIR Papers
View Archive Info| Field | Value | |
| Creator |
Kumar, M
Singh, S Shahi, VK |
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| Subject |
Chemistry
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| Description |
Hydroxide anion conducting polymer membranes also termed as anion exchange membranes (AEMs) are recently becoming important materials for electrochemical technology, alkaline fuel cells, and electrolyzers. In this work, file preparation procedure for AEMs based on poly(vinyl alcohol) (PVA) and copolymer of poly(acrylonitrile (PAN)-dimethylamino ethylmethacrylate) (DMAEMA) with strongly basic quaternary ammonium in aqueous media has been reported. This simplified procedure avoids the use of chloromethyl methyl ether (CME), a carcinogen that is harmful to human health, generally used for chloromethylation during AEM preparation. Developed AEMs were extensively characterized by Studying physicochemical and electrochemical properties, to assess their Suitability for electrodialytic ion separation. These membranes were designed to possess all the required properties of a highly anion conductive membrane Such as reasonable water uptake, good ion-exchange capacity (1.18 mequiv g(-1)), high permselectivity (0.90), along with reasonable conductivity (3.45 mS cm(-1)) due to quaternary ammonium group functionality. The membrane conducitivity values in Conjunction With Solution conductivity have been used for the estimation of the isoconductivity point, considering the membrane as a combination of the gel phase and integral phase. Electroosmotic studies revealed quite low mass drag and equivalent pore radius (2.7-4.0 angstrom) of the membrane, which are also desirable properties of an AEM. The excellent electrotransport property of AEM-70 for practical anion separation was concluded from i-v studies. Electrodialytic performance of the AEM-70 membrane revealed its, suitability for applications in electromembrane processes.
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| Publisher |
AMER CHEMICAL SOCWASHINGTON1155 16TH ST, NW, WASHINGTON, DC 20036 USA
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| Date |
2011-09-20T12:03:25Z
2011-09-20T12:03:25Z 2010 |
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| Type |
Article
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| Identifier |
JOURNAL OF PHYSICAL CHEMISTRY B
1520-6106 http://hdl.handle.net/123456789/12318 |
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| Language |
English
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