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Preparation of Anion Exchange Membranes for Electrodialysis by Impregnating Porous Polyethylene Films with Crosslinked Poly(vinylbenzyl ammonium chloride)s  

Kim, Jeong-Hoon (Environment & Energy Research Center, Korea Research Institute of Chemical Technology)
Lee, Jung-Soo (Environment & Energy Research Center, Korea Research Institute of Chemical Technology)
Yoo, Min-Chul (Environment & Energy Research Center, Korea Research Institute of Chemical Technology)
Chang, Bong-Jun (Environment & Energy Research Center, Korea Research Institute of Chemical Technology)
Kang, Ho (Department of Environmental Engineering, Chungnam National University)
Lee, Soo-Bok (Biorefinery Research Center, Korea Research Institute of Chemical Technology)
Publication Information
Membrane Journal / v.18, no.2, 2008 , pp. 138-145 More about this Journal
Abstract
A series of anion exchange composite membranes were prepared and characterized for electro-dialysis process used in the removal of toxic anion and cation polutants in groundwater or wastewater. The membranes were prepared as follows; first, porous poly(ethylene) (PE) substrates were fully impregnated with monomer mixtures with various ratio of vinylbenzylchloride (VBC), divinylbenzene (DVB) and ${\alpha},\;{\alpha}$-azobis(isobutyronitrile) (AIBN). Second, they were thermally polymerized to yield crosslinked poly(VBC-DVB)/PE composite membranes. Finally, the membranes were treated in trimethylamine (TMA)/acetone to give $-N^+(CH_3)_3$-containing poly(VBC-DVB)/PE membranes. The basic membrane properties such as ion exchange capacity (IEC), electric resistance and water content of the resulting membranes were measured as a function of VBC/DVB and TMA/Acetone content. As a result, the composite membranes showed lower electric resistance, lower water content and higher IEC than commercial anion exchange membranes (AMX, Astom) due to thin PE substrates, indicating that the composite membranes could be successfully applied to the electrodialysis for water treatment.
Keywords
anion exchange membranes; composite; toxic ion; electrodialysis;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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