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Effect of salt on sodium polystyrene sulfonate measured by light scattering

✍ Scribed by Maurice Drifford; Jean-Pierre Dalbiez

Publisher: Wiley (John Wiley & Sons)
Year: 1985
Tongue: English
Weight: 576 KB
Volume: 24
Category: Article
ISSN: 0006-3525
DOI: 10.1002/bip.360240807

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✦ Synopsis

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 CaC1, concentrations. The results indicate a splitting in the relaxation times that depends on the ratio C,/ C,, where C, and C, 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.

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