Proton exchange membrane based on pvdf in the form of cryocrushed granules
AssigneeArkema France
InventorsSamuel DEVISME, Helene MEHEUST, Anthony BONNET, Mauranne VASSY
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Abstract
The present invention relates to a proton exchange membrane, to the process for preparing said membrane, and to the application of said membrane in fields requiring ion exchange, such as effluent purification and electrochemistry, or in energy fields. In particular, this membrane is used in the design of fuel cell membranes.
Claims20
A material consisting of an irradiated PVDF in powder form to which at least one vinyl monomer is grafted, said irradiated and grafted PVDF bearing proton exchange sulfonate groups, characterized in that the tapped bulk density of said powder is greater than 0.4 g/ml, preferably between 0.5 and 1.2 g/ml.
Dependencies are inferred from the claim text.