2009
DOI: 10.1149/1.3277246
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Water Dynamics in Semi-IPN Porous Membrane for Fuel Cells

Abstract: Water diffusion and dynamic motion within the confined sPEEK channel are examined. To produce materials with different channel dimension, sPEEK/hyper branch mBMI membrane are prepared by insitu polymerization. NMR T 1 and T 2 relaxation time measurements are employed to understand the dynamic behavior of water at low ( =2-3) medium ( =4-8) and high ( =14-20) water uptake in these membranes. At fully saturated extreme, the activation energy is found to be higher (30 to 40 kJ/mole) than that of the bulk water (2… Show more

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