Approximate analytic expressions for the electrostatic interaction energy between two colloidal particles based on the modified Poisson-Boltzmann equation
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- 作者：Hiroyuki Ohshima
- 关键词：Electrostatic interaction energy ; Modified Poisson ; Boltzmann equation ; Effects of ionic size ; Linear superposition approximation
- 刊名：Colloid and Polymer Science
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：295
- 期：2
- 页码：289-296
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Polymer Sciences; Soft and Granular Matter, Complex Fluids and Microfluidics; Characterization and Evaluation of Materials; Physical Chemistry; Food Science; Nanotechnology and Microengineering;
- 出版者：Springer Berlin Heidelberg
- ISSN：1435-1536
- 卷排序：295
文摘
Simple analytic expressions are derived for the electrostatic interaction energy between two charged colloidal particles in an electrolyte solution. The obtained expressions are based on an approximate form of the modified Poisson-Boltzmann equation taking into account the ion size effects through Carnahan-Starling activity coefficients of electrolyte ions. We derive the electrostatic interaction energy between two parallel plates on the basis of the linear superposition approximation. We further employ Derjaguin’s approximation to derive the corresponding expressions for the electrostatic interaction energy between two spheres, two parallel cylinders, or two crossed cylinders.