化学学报 ›› 1999, Vol. 57 ›› Issue (6): 546-552. 上一篇    下一篇

研究论文

聚合物-溶剂相互作用参数研究

张丹枫;吕瑞东;黑恩成;刘国杰   

  1. 华东理工大学化学系.上海(200237)
  • 发布日期:1999-06-15

Studying on the polymer-solvent interaction parameter

Zhang Danfeng;Lu Ruidong;Hei Encheng;Liu Guojie   

  1. East China Univ of Sci Tech., Dept Chem.Shanghai(200237)
  • Published:1999-06-15

根据液体混合的通用Gibbs自由能模型,导得了一个能满意地描述高分子溶液中聚合物-溶剂相互作用参数随浓度和温度变化的方程。它由焓贡献和熵贡献两部分组成,在形式上与Koningsveld-Kleintijen关系式相同,但它的熵贡献是浓度的复杂函数,而不象Koningsveld建议的是一个随意的常数。该方程能够很好地解释高分子溶液的某些特性。

关键词: 高聚物, 溶剂, 相互作用, 自由能

Based on the generalized Gibbs free energy model of the mixing of liquids established by this work, an equation which can satisfactorily describe the variations of polymer-solvent interaction parameter with the concentration and temperature in the polymer solutions is derived. It is composed of two parts, namely the contributions of enthalpy and entropy, and is the same as Koningsveld- Kleintijens' relation formally. But its entropy contribution χ~S is a complex function of concentration, rather than an arbitrary constant as proposed by Koningsveld. Some characters of the polymer solution can be well explained by this equation.

Key words: HIGHPOLYMER, SOLVENTS, INTERACTIONS, FREE ENERGY

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