Macromolecular Research

  • 제17권11호
  • /
  • Pages.829-841
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  • 2009
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  • 1598-5032(pISSN)
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  • 2092-7673(eISSN)
한국고분자학회 (The Polymer Society of Korea)
권호 표지

Group Contribution Method for Group Contribution Method for Estimation of Vapor Liquid Equilibria in Polymer Solutions

  • Oh, Suk-Yung (Division of Chemical Engineering and Molecular Thermodynamics Lab., Hanyang University) ;
  • Bae, Young-Chan (Division of Chemical Engineering and Molecular Thermodynamics Lab., Hanyang University)
  • 발행 : 2009.11.25
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초록

This study introduces a specified group-contribution method for predicting the phase equilibria in polymer solutions. The method is based on a modified double lattice model developed previously. The proposed model includes a combinatorial energy contribution that is responsible for the revised Flory-Huggins entropy of mixing, the van der Waals energy contribution from dispersion, a polar force and specific energy contribution. Using the group-interaction parameters obtained from data reduction, the solvent activities for a large variety of mixtures of polymers and solvents over a wide range of temperatures can be predicted with good accuracy. This method is simple but provides improved predictions compared to those of the other group contribution methods.

키워드

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