Miyazaki, Kunimasa and Bagchi, Biman and Yethiraj, Arun (2004) Self-consistent mode-coupling theory for the viscosity of rodlike polyelectrolyte solutions. In: Journal of Chemical Physics, 121 (16). pp. 8120-8127.
A self-consistent mode-coupling theory is presented for the viscosity of solutions of charged rodlike polymers. The static structure factor used in the theory is obtained from polymer integral equation theory; the Debye-Hückel approximation is inadequate even at low concentrations. The theory predicts a nonmonotonic dependence of the reduced excess viscosity \eta R on concentration from the behavior of the static structure factor in polyelectrolyte solutions. The theory predicts that the peak in \eta R occurs at concentrations slightly lower than the overlap threshold concentration, c*. The peak height increases dramatically with increasing molecular weight and decreases with increased concentrations of added salt. The position of the peak, as a function of concentration divided by c*, is independent of salt concentration or molecular weight. The predictions can be tested experimentally.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to American Institute of Physics (AIP).|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||10 Jan 2005|
|Last Modified:||19 Sep 2010 04:17|
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