论文标题
电气双层对悬浮液电导率的影响
Effect of the electrical double layer on the electrical conductivity of suspensions
论文作者
论文摘要
我们研究了电层（EDL）在纳米化颗粒悬浮液的准电导率形成中的作用。悬浮液被视为硬核 - 可渗透壳颗粒的系统。壳是电不均匀的，具有径向对称的电导率。假定悬浮液的实际微观结构可以反映在此轮廓方面，也可以反映重叠区域的优势规则，即系统中的局部电导率由最近的粒子确定。使用我们的较早使用这种形态的系统的严格结果，我们为所需的电导率得出了一般的积分关系，该关系结合了EDL的效果，并可以从其不同的部分和参数中研究贡献。通过进一步详细阐述以描述具有高离子强度水性电解质溶液中乳胶悬浮液的实验数据来证明模型的特定特征，内部一致性和灵活性。
We study the role of the electrical double layer (EDL) in the formation of the quasistatic electrical conductivity of suspensions of nanosized particles. A suspension is viewed as a system of hard-core--penetrable-shell particles. The shells are electrically inhomogeneous, with a radially symmetrical conductivity profile. It is assumed that the real microstructure of the suspension can be reflected in terms of this profile and also the rule of dominance for overlapping regions that the local conductivity in the system is determined by the nearest particle. Using our earlier rigorous results for systems with this morphology, we derive general integral relations for the desired conductivity which incorporate the effect of the EDL and make it possible to look into the contributions from its different parts and parameters. Specific features, internal consistency, and flexibility of the model are demonstrated by further elaborating it to describe experimental data for latex suspensions in aqueous electrolyte solutions with high ionic strength.
