Method for making reinforced ion exchange membranes
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United States of America Patent
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Sep 5, 1995
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app pub date -
Dec 14, 1993
filing date -
Dec 14, 1993
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Abstract
A method for making a composite fluorinated ion exchange membrane is provided comprising applying a continuous fluorinated ion exchange polymer film to a porous reinforcing substrate, preferably made from a polyolefin such as linear high density polyethylene. The composite membrane is made by applying a solvent to the surface of the film and/or the substrate and then affixing the reinforcing substrate. These reinforced membranes may advantageously be used as separators in fuel cells, and as selective barriers in permeation separation and facilitated transport operations.
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