Polymer membrane

Details Polymer membrane Polymer membrane

C - Chemistry, Metallurgy

08

J

C08J 9/42 (2006.01) B01D 67/00 (2006.01) B01D 69/14 (2006.01) B29C 71/04 (2006.01) C25B 13/08 (2006.01) H01M 2/16 (2006.01)

Patent

CA 2090970

2090970 9205595 PCTABS00011 A composite polymer membrane comprises a first polymeric material which defines a porous matrix, and a second polymeric material which at least partially fills, and thereby blocks, the pores of the matrix, each of the first and second materials, being crosslinked. The membrane preferably includes a layer of an ethylenically unsaturated carboxylic acid which is graft-polymerised with the first polymeric material of the porous matrix on a surface thereof. Crosslinking the matrix has been found to improve the transport characteristics of species through the membrane, such as the barrier performance of the membrane towards species dissolved in solution.

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