Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0378-3812(01)00588-X
Title: A perturbed Lennard-Jones chain equation of state for polymer mixtures: Applications to vapor-liquid and liquid-liquid equilibria
Authors: Lee, Y.P.
Rangaiah, G.P. 
Chiew, Y.C. 
Keywords: Equation of state
Liquid-liquid equilibrium
Polymer mixtures
Vapor-liquid equilibria
Issue Date: 15-Oct-2001
Citation: Lee, Y.P., Rangaiah, G.P., Chiew, Y.C. (2001-10-15). A perturbed Lennard-Jones chain equation of state for polymer mixtures: Applications to vapor-liquid and liquid-liquid equilibria. Fluid Phase Equilibria 189 (1-2) : 135-150. ScholarBank@NUS Repository. https://doi.org/10.1016/S0378-3812(01)00588-X
Abstract: The perturbed Lennard-Jones chain (PLJC) equation of state (EOS) is extended to polymer mixtures. This equation utilizes the hard-sphere chain mixture as the reference system, while the perturbation term is derived based on the first-order variational theory. Binary vapor-liquid equilibrium (VLE) data of a wide range of polymer mixtures are well described by this model through the use of one binary parameter kij. We also show that the PLJC model is able to predict liquid-liquid equilibrium of polymer-solvent systems satisfactorily by introducing an empirical parameter that adjusts the degree of perturbation in the model. All phase equilibrium calculations in this study were performed rigorously by global minimization of Gibbs free energy using a genetic algorithm. © 2001 Elsevier Science B.V. All rights reserved.
Source Title: Fluid Phase Equilibria
URI: http://scholarbank.nus.edu.sg/handle/10635/91854
ISSN: 03783812
DOI: 10.1016/S0378-3812(01)00588-X
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