电解液中带电平板与带电胶体球之间的有效相互作用  

Effective interaction between charged plane and charged colloidal particle in electrolyte

作　　者：杨涛[1] 何冬慧[1] 张磬兰[1] 马红孺[1] 

机构地区：[1]宁夏大学物理电气信息学院,银川750021

出　　处：《物理学报》2005年第12期5937-5942,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10174041)资助的课题.~~

摘　　要：用Poisson-Boltzmann方程,计算了在具有单价离子的电解质溶液中均匀地带同号电荷的两无限大平行平板间的有效相互作用,以及用Derjaguin近似研究了边界对带电胶体球的影响.不考虑微离子相互作用时,两带电平板只有排斥作用,而且边界条件(面电荷密度)的改变对它们之间的有效相互作用影响不大.带电平板与带电胶体球之间的相互作用也有类似规律.The effective interaction between two infinite, uniformly charged planes immersed in electrolyte solution having only monovalent counterions is calculated using Poisson-Boltzmann equation. Meanwhile, the influence of the boundary （a infinite, uniform charged plane） on a charged colloid sphere is investigated using the Derjaguin approximation. It is found that there is only repulsive force between two charged planes in the absence of mieroion correlation. Furthermore, the variation in the boundary condition has little effect on their effective interaction. The conclusions are similar with that of the charged-plane and charged- colloid- sphere system.

关 键 词：POISSON-BOLTZMANN方程 Derjaguin近似 双电层 渗透压 

分 类 号：O646.5[理学—物理化学]