We apply dynamic scaling to both unentangled and entangled semidilute polyelectrolyte solutions. The unentangled semidilute regime can span three to four decades of polymer concentration in low-salt solutions. In this range we predict such phenomena as a concentration independent self-diffusion coefficient, relaxation time that is a decreasing function of concentration c, and explain the empirical Fuoss law for the viscosity η~c1/2. In the low-salt entangled regime we predict the concentration independent relaxation time and the viscosity η~c3/2 that are observed experimentally.
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Rubinstein et al. (1994) studied this question.
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