Equivalent conductances and transference numbers were determined in dilute aqueous solutions of isotactic and atactic poly(styrene sulphonic acid) and of the corresponding sodium salts. The polyion mobilities in the polyacid and polysalt solutions differed significantly although the mobilities were independent of the stereoregularity of the polyion. The results obtained are interpreted in terms of the counterion association and of the counter ion retardation models.
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Jordan et al. (1969) studied this question.
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