Electro-Osmotic Equilibria for a Semi-Permeable Shell Filled with a Solution of Polyionsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The authors study theoretically the electrostatic equilibria for a shell filled with a suspension of
polyions (e.g., colloids, polyelectrolytes, etc.) and immersed in an infinite salt-free reservoir. The
shell is treated as impermeable for polyions, but allowing free diffusion of counterions. From the
solution of the linearized Poisson-Boltzmann equation we obtain the distribution of the potential and
concentration profiles for polyions. The authors then derive explicit formulas for the excess
electro-osmotic pressure of a polyion solution exerted by the shell. This is shown to be due to a
concentration of polyions at the inner shell boundary and can be very different from the pressure of
a corresponding bulk polyion solution.