Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 263, Issue -, Pages 282-287Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2018.05.015
Keywords
Flory-Huggins model; Interaction parameter; Compressible regular solutions; Polymeric solutions; Membranes
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The Flory-Huggins (FH) model has been one of the most used models in theoretical calculations which has been proved to be sensitive to values assigned as interaction parameters. In this work, a predictive equation is implemented to implicitly couple the concept of compressible regular solution theory of Ruzette and Mayes into the original FH model to obtain a new concertation-dependent interaction parameter equation. Then, the modified model (m-FH) is applied for construction of phase diagram of ternary solutions containing polymer/solvent/nonsolvent where experimental data for ternary systems were collected from the literature. In order to compare and analyze the model performance, the individual absolute relative deviation (LARD (%)) was used. The m-FH model revealed acceptable accuracy in calculations without prior need for correlation to experimental data. (C) 2018 Elsevier B.V. All rights reserved.
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