SIMPLE THEORY FOR THE SELF-DIFFUSION COEFFICIENTS IN BINARY MIXTURES OF HIGHLY CHARGED SPHERICAL MACROIONS.
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abstract
The static and dynamic properties of a dilute binary macroion mixture, where a small amount of large and highly charged spheres is immersed in a system of small spheres, are theoretically discussed. From light scattering experiments on such systems, the self-diffusion of the large spheres within the system of small spheres is essentially determined. Comparison of the theoretically calculated long-time self-diffusion of the large spheres with the experimental results was quite satisfactory. Also, calculations of the two self-diffusion coefficients as functions of the diameter ratio and salt concentration have been performed.