Abstract
We have investigated with electric birefringence the dynamic behaviour of sodium poly(styrene sulphonates)(NaPSS) in aqueous solutions without added salt over a range of polyion concentrations encompassing the dilute regime and two of the semi-dilute regimes predicted by Odijk {1}. We found that in the dilute regime the longest relaxation time τ1 of the multiexponential birefringence decay curves becomes concentration independent. Going to higher concentrations into the semi-dilute regimes τ1 first increases, goes through a maximum and then decreases. As τ1 is related to overall chain motion this concentration dependence can perhaps be understood qualitatively in terms of a competition between the influence of the increasing hindrance by neighbouring chains and the decreasing chain dimensions with increasing polyion concentration.
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© 1988 Elsevier Applied Science Publishers Ltd.
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Wijmenga, S.S. (1988). Electric Birefringence Relaxation of Polyelectrolytes Without Added Salt. In: Lemstra, P.J., Kleintjens, L.A. (eds) Integration of Fundamental Polymer Science and Technology—2. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1361-5_28
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DOI: https://doi.org/10.1007/978-94-009-1361-5_28
Publisher Name: Springer, Dordrecht
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