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Prediction of Flory–Huggins interaction parameters from intrinsic viscosities
Author(s) -
Kok Chong Meng,
Rudin Alfred
Publication year - 1982
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.1982.070270203
Subject(s) - virial coefficient , osmometer , flory–huggins solution theory , thermodynamics , intrinsic viscosity , polymer , viscosity , light scattering , solvent , materials science , statistical physics , chemistry , scattering , polymer chemistry , physics , optics , organic chemistry , composite material
Previous articles from this laboratory have described a model for predicting the second virial coefficient of a polymer solution given the polymer molecular weight and its intrinsic viscosity in the particular solvent. The same theory is used in this report to calculate values of the Flory–Huggins interaction parameter χ. The method is different in that χ is obtained through manipulation of simulated exprimental data in exactly the same way as in an actual experiment. Agreement between estimated χ values and those obtained at infinite dilutions from membrane osmometry or light scattering is within 2%, on the average. The model accounts for the molecular weight dependence of χ.