Interactions between ions and polyelectrolytes. A note on determination of ionic activities, with reference to a modified poisson-boltzmann treatment.
We compare the numerous available data on ionic activities, in the presence of polyelectrolytes, with evaluation of these quantities from a modified Poisson-Boltzmann equation in the framework of a cell model. This treatment gives an excellent description of the mean activity for various ions. The activity of counterions is well-predicted, that of co-ions is generally overestimated.
Delville
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Institut de Chimie Organique et de Biochimie, Université de Liège, Sart - Tilman par 4000 Liège, Belgium.