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Poly(styrene-alt-maleic anhydride) was successfully (partially) modified with N,N-dimethylaminopropylamine to yield the corresponding N-substituted maleimide with dangling tertiary amine functionality. The remaining maleic anhydride units were ammonolyzed to create a water-soluble polymer. This polymer was used as a polymeric surfactant in the emulsion copolymerization of styrene and n-butyl acrylate...