Chemistry Reference
In-Depth Information
and the experimental data for the osmotic coefficient of aqueous solutions of
ammonium poly(acrylate) (NH
4
PA 10) and NaCl. For this particular system it
was not necessary to consider an influence of NaCl on the configurational para-
meter. The comparisons reveal that the model is well suited for the correlation of
the vapor liquid equilibrium of aqueous solutions of polyelectrolytes with and
without an added low molecular weight salt.
6 Summary
A literature review is given on the liquid-vapor phase equilibrium of aqueous
solutions of polyelectrolytes. Experimental findings as well as selected thermody-
namic models for the prediction and correlation of such phase equilibria are
reviewed. The treatment of the thermodynamic models starts with theories and
later focuses on combining the results from such theories with engineering models
for the excess Gibbs energy. Such combinations allow for a good correlation of
experimental data, for example, the osmotic coefficient (and related properties) of
aqueous solutions of a single polyelectrolyte with and without an added salt.
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