REINFORCED ION-CONDUCTIVE MEMBRANES
First Claim
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1. A method of forming an ion-conductive membrane, the method comprising:
- coating a first layer adjacent to a second layer, wherein the first layer comprises a first ionomer dispersed in a first solvent, and wherein the second layer comprises a reinforcement polymer substantially dissolved in a second solvent; and
initiating an ionomer-induced phase separation of the reinforcement polymer from the second solvent, thereby forming a porous polymer substrate from the reinforcement polymer and interpenetrating a portion of the first ionomer within the porous polymer substrate.
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Abstract
An ion-conductive membrane that includes a first layer comprising a first ionomer, and a porous polymer substrate, where at least a portion of the first ionomer is interpenetrated within the porous polymer substrate by ionomer-induced phase separation.
25 Citations
15 Claims
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1. A method of forming an ion-conductive membrane, the method comprising:
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coating a first layer adjacent to a second layer, wherein the first layer comprises a first ionomer dispersed in a first solvent, and wherein the second layer comprises a reinforcement polymer substantially dissolved in a second solvent; and initiating an ionomer-induced phase separation of the reinforcement polymer from the second solvent, thereby forming a porous polymer substrate from the reinforcement polymer and interpenetrating a portion of the first ionomer within the porous polymer substrate. - View Dependent Claims (2, 3, 4, 5, 6, 14)
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7. A method of forming an ion-conductive membrane, the method comprising the steps of:
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a) coating a first substrate layer having a first surface and a second surface from a first solution, the first solution comprising a reinforcement polymer substantially dissolved in a first solvent; b) coating a first ionomer layer adjacent the first surface of the substrate layer, the first ionomer layer comprising a first ionomer; c) coating a second ionomer layer adjacent the second surface of the substrate layer, the second ionomer layer comprising a second ionomer; and d) initiating an ionomer-induced phase separation of the reinforcement polymer from the first solvent, thereby forming a porous polymer substrate from the substrate layer and interpenetrating a portion of the first ionomer and a portion of the second ionomer within the porous polymer substrate. - View Dependent Claims (8, 9, 10, 11, 12, 13, 15)
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Specification