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Progress in Chemistry 2005, Vol. 17 Issue (01): 40-44 Previous Articles   Next Articles

• Review •

Review of Thermodynamic Models in Polymer Solutions

Cheng Zhenfeng 　Liu Qinglin**   

  1. (Department of Chemical and Biochemical Engineering , Xiamen University , Xiamen 361005 , China)
  • Received: Revised: Online: Published:
  • Contact: Liu Qinglin E-mail:qlliu @jingxian. xmu. edu. cn
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The equilibrium data of solvent2polymer systems are important to industrial processes , while they are very difficult to be obtained directly because of the complexity of the systems. It appears to be vital to obtain the data of solvent2polymer systems accurately by establishing thermodynamic models. This work presents a review of the four impor2 tant thermodynamic models , e. g. , UNIFAC , UNIQUAC , Flory2Huggins (FH) and ENSIC. Generally , they all can be used to predict the phase equilibriumof polymer2solvent systems. Of those , UNIFAC model is used most often , FH model is the simplest , ENISC model is showed to be the most accurate and UNIQUAC model is seemed to be applicable to most of the systems.

Key words: thermodynamic models, polymer solutions, free2volume, activity

CLC Number: 

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