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PVA/Silica Hybrid Membrane Containing Sulfonic Acid Croup for Direct Methanol Fuel Cells Application  

Young Moo Lee (National Research Laboratory for Membranes, School of Chemical Engineering, College of Engineering, Hanyag University)
Dae Sik Kim (National Research Laboratory for Membranes, School of Chemical Engineering, College of Engineering, Hanyag University)
Kwang Ho Shin (National Research Laboratory for Membranes, School of Chemical Engineering, College of Engineering, Hanyag University)
Ho Bum Park (National Research Laboratory for Membranes, School of Chemical Engineering, College of Engineering, Hanyag University)
Ji Won Rhim (Department of Chemical Engineering, Hannam University)
Publication Information
Membrane Journal / v.13, no.2, 2003 , pp. 101-109 More about this Journal
Abstract
In the present study, crosslinked poly(vinyl alcohol) (PVA) membranes were prepared at various crosslinking agent content using sulfosuccinic acid (SSA) containing sulfonic acid group ($SO_3H)$. To reduce methanol permeability, silica was introduced to the membrane using sol-gel process. The hybrid membranes were studied in relation to proton conductivity and methanol permeability. It was found that both these properties were very dependent on the effect of SSA content as a crosslinking agent and as a donor of hydrophilic $SO_3H)$ group. The proton conductivities of these PVA/SSA/Silica membranes are in the range from $10^{-3}\;to\;10^{-2}$S/cm and the methanol permeabilities are in the range from $10^{-8}\;to\;10^{-7}\;cm^2/sec$.
Keywords
PVA-SiO_2$ hybrids; Sol-gel process; sulfosuccinic acid; proton conductivity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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