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Theoretical Calculation of Flory‐Huggins and Scattering Interaction Parameters by Means of the Lattice Fluid Theory for PVME/PSD Blends
Author(s) -
Wen Gangyao,
Sun Zhaoyan,
Yang Jian,
An Lijia,
Jiang Zhenhua,
Wu Zhongwen
Publication year - 2001
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/1521-3919(20010401)10:4<368::aid-mats368>3.0.co;2-b
Subject(s) - flory–huggins solution theory , thermodynamics , polystyrene , scattering , chemistry , polymer , physics , organic chemistry , optics
By fitting the spinodals of poly(vinyl methyl ether)/deuterated polystyrene (PVME/PSD) systems, the adjustable parameters ε * 12 and δ ε * in the Sanchez‐Balasz lattice fluid (SBLF) theory could be determined for different molecular weights. According to these parameters, Flory‐Huggins and scattering interaction parameters were calculated for PVME/PSD with different molecular weights by means of the SBLF theory. From our calculation, Flory‐Huggins and scattering interaction parameters are both linearly dependent on the reciprocal of the temperature, and almost linearly on the concentration of PSD. Compared with the scattering interaction parameters, the Flory‐Huggins interaction parameters decreased more slowly with an increase in the concentration for all three series of blends.