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Polyvinyl alcohol/poly-2-acrylamide-2-methyl propane sulfonic acid/polyethylene glycol blend membranes were cross-linked by glutaraldehyde in acetone to give water-insoluble film with an excellent ionic conductivity. The water-swelling ratio (WSR) of the membranes was decreased by treating with glutaraldehyde accompanied by increasing proton conductivity. Excellent proton conductivities (0.02–0.083Scm...
A new type of chemically cross-linked polymer blend membranes consisting of poly(vinyl alcohol) (PVA), 2-acrylamido-2-methyl-1-propanesulfonic acid (PAMPS) and poly(vinylpyrrolidone) (PVP) have been prepared and evaluated as proton conducting polymer electrolytes. The proton conductivity (σ) of the membranes was investigated as a function of cross-linking time, blending composition, water content...
It was found that p-aminostyrene (PAS) was easily oligomerized by CF3COOH (TFA) in CCl4 to give a low molecular weight oligomer 4 including phenylene, ethylidene and secondary amine groups in the backbone, i.e., the isomer of poly-p-aminostyrene 5. The NMR and IR spectra of the product are quite different from those of polymer 5 produced by 2,2-azobisisobutyronitrile (AIBN) in toluene. The dimer D...
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