Kinetics of water vapor sorption in sulfonated polyimide membranes

Detallante V; Langevin D; Chappey C; Metayer M; Mercier R; Pineri M

Desalination, Vol.148, No.1-3, 333-339, 2002

DOI10.1016/S0011-9164(02)00726-9 Export Citation

Kinetics of water vapor sorption in sulfonated polyimide membranes

Detallante V, Langevin D, Chappey C, Metayer M, Mercier R, Pineri M

Water vapour sorption kinetics in a H+ form naphtalenic sulfonated polyimide membrane at 25degreesC has been investigated by using an electronic microbalance (IGA, Hiden). An effective diffusion coefficient D-exp has been calculated from kinetic data by using the Fickian model for the final part of the sorption. The variation of D-exp with the equilibrium water activity (0

Keywords:water sorption;kinetics;clustering;ionomers;sulfonated polyimides;fuel cell membranes