A single-ion polymer electrolyte has formula (I): R—[SO.sub.2N(M)SO.sub.2—X—].sub.m—SO.sub.3Li (I). In formula (I), X may be an electron withdrawing group such as an aromatic group, substituted aromatic group, —(CF.sub.2).sub.n—, —(CCl.sub.2).sub.n—, —C.sub.6H.sub.4—, or —C.sub.6H.sub.3(NO.sub.2)—. R may be a fluorinated alkyl, LiSO.sub.3(CF.sub.2).sub.3—, or an aromatic group, and M may be a metal cation. For the single-ion polymer electrolyte with formula (I), m may be an integer from 2 to 2000, and n may be an integer from 1 to 4.

A single-ion polymer electrolyte has formula (I): R—[SO.sub.2N(M)SO.sub.2—X—].sub.m—SO.sub.3Li (I). In formula (I), X may be an electron withdrawing group such as an aromatic group, substituted aromatic group, —(CF.sub.2).sub.n—, —(CCl.sub.2).sub.n—, —C.sub.6H.sub.4—, or —C.sub.6H.sub.3(NO.sub.2)—. R may be a fluorinated alkyl, LiSO.sub.3(CF.sub.2).sub.3—, or an aromatic group, and M may be a metal cation. For the single-ion polymer electrolyte with formula (I), m may be an integer from 2 to 2000, and n may be an integer from 1 to 4.

A polymer film obtainable by curing a composition comprising a compound of Formula (I) wherein: R′ is vinyl, epoxy C.sub.1-3_alkylenethiol: n has a value of 1 or 2; m has a value of 1, 2 or 3; M′.sup.+ is a cation; wherein X is as defined in the claims; and wherein the molar fraction of the compound of Formula (I) in relation to all curable compounds in the composition is greater than 0.25. Also claimed are compositions, processes membranes and their uses.

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Zwitterionic double network hydrogels, methods for making zwitterionic double network hydrogels, methods for using zwitterionic double network hydrogels, and articles made from and coated with zwitterionic double network hydrogels.

A method for forming a polymer/graphene nanocomposite includes irradiating a polymer comprising an aromatic poly(carbonate-ester), a poly(etherimide-sulfone), or a combination thereof with radiation comprising a wavelength in a range of 8.3 to 11 m to provide the polymer/graphene nanocomposite.

A polymer film comprising anionic groups and 0.008 to 25 mg/g of each of components (a) and (b): (a) a crosslinking agent which is free from fluoro groups and comprises a group of Formula (I); and (b) a non-ionic crosslinking agent; Formula (I) wherein M.sup.+ is a cation and * indicates the attachment points to other elements of the crosslinking agent.

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A hydrophilic foam comprises a polymer formed from a betaine prepolymer that is a reaction product of a betaine of formula (I) with one or more polyether glycols and a polyfunctional isocyanate compound of formula (II), (I) wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each hydrocarbon groups having from 1 to 4 carbon atoms, A.sup.? is an anionic functional group, and X.sup.+ is a cationic atom, (II) wherein R.sup.5 is a linear or branched aliphatic hydrocarbon group having from 2 to 12 carbon atoms, or a 5- or 6-membered aliphatic or aromatic carbocyclic group having from 5 to 50 carbon atoms, and b is an integer having a value of 1, 2, or 3.

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A polymer film obtainable from curing a composition comprising: (a) a curable ionic compound comprising a bis(sulfonyl)imide group; and (b) a curable non-ionic compound comprising at least 4 vinyl groups.

Poly(ether sulfones) (PES) and poly(ether amide sulfones) (PEAS) were prepared from post-consumer polycarbonates and polyesters, respectively, using a single vessel in batch mode (all reactants present when heating was initiated). The depolymerization of the initial polymer occurs concurrently with step growth polymerization to form a product polymer having a number average molecular weight of at least 5000.

Zwitterionic double network hydrogels, methods for making zwitterionic double network hydrogels, methods for using zwitterionic double network hydrogels, and articles made from and coated with zwitterionic double network hydrogels.