Abstract
The structure of various ionic block copolymers of ABA and AB architecture was investigated by SAXS. Polystyrene formed the B-blocks of all materials, and vinylpyridinium methyl iodide or cesium methacrylate formed the ionic A blocks. The latter were sept short and spherical ionic domains were observed. The morphology was studied as a function of the lengths of both ionic and nonionic blocks and of the methods of preparation (neutralization in different solvents, solvent casting, or compression molding). A strong correlation peak was observed, often followed by features related to shape factors for the spherical microdomains
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