Acta Chimica Sinica ›› 1999, Vol. 57 ›› Issue (6): 546-552. Previous Articles     Next Articles

Original Articles

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)
  • 出版日期:1999-06-15 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)
  • Online:1999-06-15 Published:1999-06-15

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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