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Spectroscopic Study Of An Ionic Blend Made From The Acid Form Of Sulfonated Polystyrene And Poly[Ethyl Acrylate-Co-(4-Vinylpyridine)], William Macknight, Kazuo Sakurai, Elliot P. Douglas
Spectroscopic Study Of An Ionic Blend Made From The Acid Form Of Sulfonated Polystyrene And Poly[Ethyl Acrylate-Co-(4-Vinylpyridine)], William Macknight, Kazuo Sakurai, Elliot P. Douglas
William MacKnight
Infrared spectroscopic measurements were performed for a series of stoichiometric blends made from sulfonated polystyrene and poly[ethyl acrylate-co-(4-vinylpyridine)].Comparison of the spectra before and after blending revealed that the sulfonic acid groups formed sulfonate anions and the pyridine groups formed pyridinium cations in the blends. These changes were ascribed to an acid/base interaction occurring upon blending. Quantitative analysis in terms of both the S-0 single-bond stretching and the pyridinium cation ring vibration band indicated that most of the sulfonic acid and pyridine groups took part in the interaction.