Study on thermodynamic properties of polyelectrolyte solutions

Abstract

Based on a cylindrical cell model and Vink's approximation, distribution of electric potential around polyion under various conditions are obtained by solving Poisson-Boltzmann equation. Activity coefficients of polyion, counterion and coion are calculated from those potential distribution. Osmotic coefficients of solvent are also obtained. Predicted mean activity coefficients of simple salts added for systems of NaPP-NaCl, NaPP-NaBr and NaCarr-NaI are in good agreement with the experimental results.

Key words: THERMODYNAMIC PROPERTIES, ELECTROSTATIC POTENTIAL, OSMOTIC COEFFICIENT, ACTIVITY COEFFICIENT

CLC Number:

TQ31

Cite this article

FENG;LIU HONGLAI;HU YING. Study on thermodynamic properties of polyelectrolyte solutions[J]. Acta Chimica Sinica, 1996, 54(11): 1076-1083.

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