Steady-state compliance Je of polyelectrolyte solutions was measured in the presence and absence of added salt. In dilute regions, Je depends on molecular weight M, polymer concentration C, and concentration of added salt Cs. The M and C dependences are much stronger than that of nonionic polymers as given by Je ∝ M-2C-3C5. In entangled regions, on the other hand, Je depends on C only in the same manner as for that of nonionic polymer solutions, but the concentration dependence is weaker than that of nonionic polymers as given by Je ∝ C-1.3. Moreover, the polymer concentration dependence of the weight-average relaxation time τw defined as the product of zero-shear viscosity η0 and Je is found to increase with increasing Cs in semidilute regions for η0 and entangled regions for Je. These features of Je and τw in entangled regions can be explained by the same model as for zero-shear viscosity in Part 1.
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