Irradiation of polymeric ion exchange membranes to increase water absorption
AssigneeE. I. Du Pont de Nemours and Company
InventorShoibal Banerjee
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Abstract
The present invention is a process for modifying a fluorinated ion exchange membrane by irradiation of the membrane with a sufficient dose of non-spark-producing radiation to increase water absorption and/or ionic conductivity of the membrane. The membranes are particularly useful in fuel cells and chloralkali cells.
Claims6
A process for modifying a fluorinated ion exchange membrane comprising irradiating said membrane, in an environment substantially free of a monomer which would graft polymerize with components of said membrane, with a non-spark-producing ionizing electron beam radiation with a dose of about 1-10 megarads.
Dependencies are inferred from the claim text.