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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)

Publication Information

Macromolecular Research / v.17, no.11, 2009 , pp. 829-841 More about this Journal

Abstract

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.

Keywords

modified double lattice model; group contribution method; vapor liquid equilibria; solvent activity;

Citations & Related Records

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