Theory of Solvent-Mediated Long Range Force between Colloidal Particles in a Solvent : II. Interaction in an Electrolytic Solution(Cross-disciplinary Physics and Related Areas of Science and Technology)

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The theory in the previous paper [J. Phys. Soc. Jpn. 69 (2000) 618] is extended for the interaction between two charged colloidal particles immersed in an electrolytic solution. An exact and explicit expression of the interaction is presented. The interaction is determined by solution-structures in the bulk and near the surface of colloidal particle. A similar result is also obtained for the density profile of microparticles in the radial direction of colloidal particle. In order to compare the theory with the ones published so far, the case is discussed that the correlations between micro-ions and neutral atoms are neglected; the interaction potential consists of the van der Waals potential, the potential Ф^sol_cc(r) mediated by neutral atoms,and the electrostatic potential Ф^e.s._cc(r). Potential Ф^sol_cc(r) is the one in the previous theory,while Ф^e.s._cc(r) is an extention of the DLVO potential in the sense that Ф^e.s._cc(r) is taken into account consistently the strong nonlinear effects through the effective charge and size of colloidal particle.
社団法人日本物理学会の論文
2002-12-15