Effect of salt on sodium polystyrene sulfonate measured by light scattering
Authors:
- 1 August 1985
- journal article
- research article
- Published by Wiley in Biopolymers
- Vol. 24 (8) , 1501-1514
Abstract
The quasielastic light scattering method was used to study the ionic strength dependence of the mutual diffusion coefficient of sodium polystyrene sulfonate (NaPSS) as a function of NaCl and CaCl2 concentrations. The results indicate a splitting in the relaxation times that depends on the ratio Cp/Cs, where Cp and Cs are the polyion and added salt concentrations. A universal relationship taking into account Manning's theory of condensation and the Debye screening due to the added salt is proposed to characterize the fast–slow relaxation time transition.Keywords
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