Crosslinked ion conductive membranes

Details Crosslinked ion conductive membranes Crosslinked ion conductive membranes

1998-05-22

2000-07-18

Truong, Duc

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253312, 5253313, 5253316, 522149, 522151, 522155, 522162, 522164, C08F 832

Patent

active

060908955

ABSTRACT:
A method is provided for making crosslinked acidic polymers useful as ion conductive membranes, such as crosslinked sulfonated polyether ketones, sulfonated polysulfones, sulfonated polystyrenes, and other acidic polymers, by crosslinking with a species which generates an acidic functionality. The crosslinker preferably binds to acid functions by conversion of acid groups to imide functionality, which, due to the acidity of the N-H bonds therein, compensate for the acidity lost by the occupation of the acid groups and thus preserve membrane conductivity while contributing to membrane strength and resistance to swelling.

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