Effect of the carboxylate group distribution on potentiometric titration of acrylamide-acrylic acid copolymers |
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| Authors: | Nguyen Dinh Truong Ghouti Medjahdi Dominique Sarazin Jeanne François |
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| Affiliation: | (1) Institut Charles Sadron, Centre de Recherches sur les Macromolécules, 6, rue Boussingault, F-67083 Strasbourg Cedex, France |
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| Abstract: | Summary the potentiometric behavior of acrylamide-acrylic acid copolymers is discussed as a function of their method of preparation: base hydrolysis of polyacrylamide or radical copolymerization. The values of pK0 (the intrinsic pK at zero degree of ionization) and the variations of pKa versus the ionization degree are found to depend on the origin of the polymers and such differences are qualitatively attributed to significant discrepancies in the carboxylate group distribution. |
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