Research Papers by Dominique Langevin

Water transport through nanocomposite-based polyamide 12/montmorillonite was investigated by permeation kinetics. Intercalated and semi-exfoliated nanocomposite structures were studied. For low montmorillonite content (£ 5%) a decrease of water permeability was obtained for a both structures and mai

Water vapour sorption kinetics in a H+ form naphtalenic sulfonated polyimide membrane at 25°C has been investigated by using an electronic microbalance (IGA, Hiden). An effective diffusion coefficient Dexp has been calculated from kinetic data by using the Fickian model for the final part of the sor

The sorption kinetic and equilibrium data obtained at different water activities allowed us to determine the water sorption isotherms and mean diffusion coefficient in the Nafion® membrane. The water sorption isotherm is reminiscent of systems in which there is water clustering at high water activit