In:
ECS Transactions, The Electrochemical Society, Vol. 33, No. 1 ( 2010-10-01), p. 1915-1922
Abstract:
In this work, a new type of alkaline ion-exchange membrane (AAEM) composed of poly(vinyl alcohol) and poly(acrylamide-co-diallyldimethylammonium chloride)(PVA/PAADDA) has been successfully established by blending and chemical cross-linking. The resultant membranes were characterized in detail at structural and conducting property by FTIR spectroscopy, thermal gravity analysis, swelling behavior, ion exchange capacity and alkali resistance stability. A maximum conductivity of up to 6.86×10−4 S cm-1 at room temperature was achieved for PVA/PVP in a mass ratio of 1:0.25, along with the good membrane mechanical property. The ion-exchange capacity thus measured is 0.91 with a reasonable water uptake of 56.6%. High temperature tolerance was achieved where the thermal degradation temperature in air Td, was in the range of 223-250oC. In addition, the membrane showed relatively good alkaline stability without losing its integrity and ionic conductivity after exposure to 1M KOH at 80oC and, only 12.5% decreased in ionic conductivity after conditioning in 6M KOH at 80oC.
Type of Medium:
Online Resource
ISSN:
1938-5862
,
1938-6737
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2010
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