论文标题
聚电解质溶液的粘度及其对其持久性，浓度和溶剂质量的依赖性
The Viscosity of Polyelectrolyte Solutions and its Dependence on their Persistence Length, Concentration and Solvent Quality
论文作者
论文摘要
在这项工作中，使用固定poiseuille流动下的密闭溶液的数值模拟，据报道了一项有关对聚电解质浓度，持久长度，盐浓度和溶剂质量的影响的剪切粘度的全面研究。在良好的溶剂和theta溶剂条件下，都重现了粘度的各种缩放机制。当离子强度变化时，静电相互作用在粘度中发挥的关键作用就会出现。有人认为，这些结果有助于理解在不同溶剂的刚性和柔性聚电解质的纠缠聚电解质溶液中的粘度缩放，这是对能够在复杂液体中微调粘度进行智能设计的智能设计所需的。
In this work, a comprehensive study about the influence on shear viscosity of polyelectrolyte concentration, persistence length, salt concentration and solvent quality is reported, using numerical simulations of confined solutions under stationary Poiseuille flow. Various scaling regimes for the viscosity are reproduced, both under good solvent and theta solvent conditions. The key role played by the electrostatic interactions in the viscosity is borne out when the ionic strength is varied. It is argued that these results are helpful for the understanding of viscosity scaling in entangled polyelectrolyte solutions for both rigid and flexible polyelectrolytes in different solvents, which is needed to perform intelligent design of new polyelectrolytes capable of fine tuning the viscosity in complex fluids.
