Molecular Thermodynamic Model for Polyelectrolyte Solutions with Added Salts

Abstract

Abstract: A molecular thermodynamic model of polyelectrolyte developed previously was extended to
polyelectrolyte solutions with added salts. Thermodynamic properties, such as activity
coefficients of polyelectrolytes or added salts and osmotic coefficients of solvent, of a
number of aqueous mixtures of polyelectrolytes and salts are analyzed with the proposed
model. Successful correlation is obtained in the range of moderate or higher polyion
concentration. For the same sample, thermodynamic properties of polyelectrolytes with and
without simple electrolytes can be predicted mutually using parameters from regression
data.

Key words: polyelectrolyte solution, molecular thermodynamic model, activity coefficient, osmotic coefficient

摘要： A molecular thermodynamic model of polyelectrolyte developed previously was extended to
polyelectrolyte solutions with added salts. Thermodynamic properties, such as activity
coefficients of polyelectrolytes or added salts and osmotic coefficients of solvent, of a
number of aqueous mixtures of polyelectrolytes and salts are analyzed with the proposed
model. Successful correlation is obtained in the range of moderate or higher polyion
concentration. For the same sample, thermodynamic properties of polyelectrolytes with and
without simple electrolytes can be predicted mutually using parameters from regression
data.

关键词: polyelectrolyte solution;molecular thermodynamic model;activity coefficient;osmotic coefficient

ZHANG Bo, CAI Jun, LIU Honglai, HU Ying. Molecular Thermodynamic Model for Polyelectrolyte Solutions with Added Salts[J]. .

张波, 蔡钧, 刘洪来, 胡英. 含盐聚电解质溶液的分子热力学模型[J]. CIESC Journal.

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