Bulletin of the Society of Sea Water Science, Japan
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
Volume 63 , Issue 6
Showing 1-8 articles out of 8 articles from the selected issue
Greeting
Special Issue : “Symposium in 60th Annual Meeting “Pretreatment of Seawater and Membrane Fouling—Ion-exchange membrane and reverse osmosis membrane—”
Commentary
Special Issue : “Session of Technical Communication in 60th Annual Meeting”
Commentary
Original Paper
  • Megumi Nishimura, Mitsuru Higa
    2009 Volume 63 Issue 6 Pages 381-386
    Published: 2009
    Released: June 28, 2011
    JOURNALS FREE ACCESS
    Anion exchange membranes with interpenetrating network structures were prepared by blending PVA and a polycation, poly (allylamine). The membranes obtained were physically cross-linked by annealing them and chemically cross-linked by reaction with various concentrations of glutaraldehyde (GA) aqueous solutions. The effect of the cross-linking conditions and polycation content on the ionic transport properties through the membranes was investigated. The water content of the membranes increased with increasing polycation content and with decreasing GA concentration, CGA. The effective charge density of the membranes increased with increasing polycation content, Cpc. The highest value of the effective charge density was 0.78mol dm–3 at the membrane of Cpc=20wt.% and CGA=0.10vol.%. The electric resistance of the membranes also depended on polycation content and GA concentration. The membrane of Cpc=20wt.% and CGA=0.01vol.% had the lowest membrane resistance (1.23Ωcm2) of all the membranes.
    The dynamic transport number of the membranes increased with increasing polycation content and with increasing GA concentration while the membrane resistance also increased with increasing GA concentration. These results indicate that the ion transport properties of the PVA-based anion exchange membranes can be controlled by changing the polycation content and the cross-linking conditions.
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