Abstract
A method of determining the charge density distribution of polyelectrolytes is discussed. Since the electrophoretic mobility of polyelectrolytes is independent of molecular weight, the distribution of charge density of polyelectrolytes can be calculated from the spreading of electrophoretic patterns, provided corrections for the spreading of the boundary due to diffusion and for the polymer concentration dependence of electrophoretic velocity are made. Also the relationship between the electrophoretic mobility and the charge density of the polyelectrolyte needs to be known. Examples of determination of the distribution of the degree of etherification of carboxymethyl cellulose by this method are shown.
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Terajima, K., Takahashi, T. & Nagasawa, M. Determination of the Charge Density Distribution of Polyelectrolytes by Electrophoresis. Polym J 8, 449–455 (1976). https://doi.org/10.1295/polymj.8.449
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DOI: https://doi.org/10.1295/polymj.8.449