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US 8,709,199 B2Granted
Method of preparing a water vapor transfer membrane
AssigneeGM Global Technology Operations LLC
InventorsAnnette M. Brenner, Shawn M. Clapham, Lijun Zou, Timothy J. Fuller
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Abstract
A method of making a water vapor transport membrane is described. The method can include providing two sheets, each sheet comprising a support layer with an ionomer layer thereon; applying a solvent to at least one sheet; and contacting the ionomer layers of the two sheets to form a composite membrane comprising a composite ionomer layer between the two support layers. A composite membrane is also described.
Claims16
A method of making a water vapor transport membrane comprising:
- providing two sheets, each sheet comprising a support layer with an ionomer layer thereon;
- applying a solvent to the support layer of at least one of the sheets;
- and
- contacting the ionomer layers of the two sheets to form a composite membrane comprising a composite ionomer layer between the two support layers.
1 more element
A method of making a water vapor transport membrane comprising:
- coating an ionomer layer on a backer layer;
- applying a support layer to the wet ionomer layer such that one is placed on the other;
- drying the wet ionomer layer;
- removing the backer layer to form a first sheet comprising a the support layer and the ionomer layer thereon;
- applying a solvent to the support layer of at least one of the first sheet and a second sheet;
- and
- contacting the two sheets to form a composite membrane comprising a composite ionomer layer between the first and second support layers.
4 more elements
Dependencies are inferred from the claim text.