Patent ID: 7815986

Claim:
An article comprising one or more layers, wherein at least one layer comprises: a) a polyelectrolyte copolymer blend having one of the general formulas: wherein: W=a bond, O, NH, S, SO, or SO 2 Y=a bond, alkyl, aromatic, or alkylene-ether linkage of C 1 to C 12 Z=a bond, alkyl, aromatic, or alkylene-ether linkage of C 1 to C 12 n=greater than 50 mole % m=less than 50 mole % L=non-perfluorinated alkyl or alkylene-ether linkage L′=a bond or alkyl or alkylene-ether linkage A=a sulfonate, phosphonate or carboxylate B=a group capable of cross-linking, selected from group consisting of hydroxyl; primary, secondary, and tertiary amines; N-methylol acrylamide; isobutoxy methacrylamide; N-methylenebisacrylamide; allyl groups; stryl groups; glycidyl methacrylate; free and blocked isocyanates, melamines, epoxies, carboxylates, αω-dihaloalkanes, αω-dialdehydes, carboxylic acids, alkoxy silanes, silicones, aziridines, and carbodiimides, and b) a matrix polymer, wherein a) and b) are different, and wherein a) has domain sizes of less than 500 nm.