Interaction between Rod-like Polyelectrolytes

概要

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A system of rod-like polyelectrolytes in a salt-free solvent is treated systematically. The force between two rods arranged parallel in their free volume is obtained, as a function of their charge density and the distance between them, by using the exact solution of the Poisson-Boltz-mann equation for this system and the general expression of force by Bell and Levine. Numerical examples are given under various conditions of charge and distance. At high charge, the force between charged rods is greatly depressed by counter ions around the rods even at the short mutual distance. Owing to the neutrality condition a force which we call the neutrality force appears between rods. This force makes stable the equidistant arrangement of many rods in the solution. Simpler models; plate, one rod, and pipe; are also treated and a general theory on the force in cylindrical coordinate systems is developed. As a result, the effect of counter ions on the force between charged particles is clearly understood.
社団法人日本物理学会の論文
1960-05-05