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Vapor–liquid equilibria for polymer solutions through a group‐contribution method: Chain‐length dependence
Author(s) -
Lee Seung Seok,
Sun Yang Kook,
Bae Young Chan
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28767
Subject(s) - van der waals force , thermodynamics , polymer , group contribution method , solvent , materials science , chain (unit) , lattice (music) , entropy (arrow of time) , polar , flory–huggins solution theory , hydrogen bond , chemistry , molecule , physics , organic chemistry , phase equilibrium , astronomy , acoustics , phase (matter)
A new group‐contribution model based on the modified double‐lattice theory considering chain‐length dependence of the universal parameters was developed and applied to describe the vapor–liquid equilibria of polymer solutions. The proposed model includes the combinatorial energy contribution that is responsible for the revised Flory–Huggins entropy of mixing, the van der Waals energy contribution from dispersion and polar forces, and the specific energy contribution from hydrogen bonding. The quantitative description according to the proposed model was in good agreement with experimentally observed solvent activities of polymer solutions. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008