Ashok B, Muthukumar M
Department of Physics and Polymer Science, Materials Research Science & Engineering Center, University of Massachusetts, Amherst, Massachusetts 01003, USA.
J Phys Chem B. 2009 Apr 30;113(17):5736-45. doi: 10.1021/jp8080589.
We present theoretical results to describe the crossover behavior of the viscosity of dilute and semidilute polyelectrolyte solutions. We have resolved the puzzle of the experimentally observed nonmonotonic dependence of the reduced viscosity of polyelectrolyte solutions on the polymer concentration below the entanglement limit. We use a combination of the theory of triple screening of excluded volume, electrostatic, and hydrodynamic interactions in polyelectrolyte solutions and a thermodynamic theory of interchain interactions in obtaining the crossover formulas. The calculated results are in qualitative agreement with data in the experimental literature.
我们给出理论结果来描述稀溶液和半稀溶液中聚电解质溶液粘度的交叉行为。我们解决了实验观察到的聚电解质溶液比浓粘度在低于缠结极限时对聚合物浓度的非单调依赖性这一难题。在获得交叉公式时，我们结合了聚电解质溶液中排除体积、静电和流体动力学相互作用的三重屏蔽理论以及链间相互作用的热力学理论。计算结果与实验文献中的数据在定性上是一致的。
