Premium
Thermodynamics of a polymer blend solution system studied by gel permeation chromatography and viscosity
Author(s) -
Gómez Clara M.,
Figueruelo Juan E.,
Campos Agustín
Publication year - 1999
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19990101)200:1<246::aid-macp246>3.0.co;2-c
Subject(s) - binodal , ternary operation , flory–huggins solution theory , thermodynamics , polystyrene , polybutadiene , ternary numeral system , polymer , tetrahydrofuran , viscosity , solvent , intrinsic viscosity , polymer chemistry , chemistry , materials science , copolymer , phase diagram , organic chemistry , phase (matter) , physics , computer science , programming language
Binary and ternary interaction parameters and their derivatives have been calculated with the Flory‐Huggins formalism developed for a ternary polymer system. The equilibrium compositions of the ternary system tetrahydrofuran/polybutadiene/polystyrene that forms two phases in equilibrium at 25°C have been used to solve the binodal equations. With this set of parameters, the viscosimetric interaction parameters have been computed. For the sake of comparison, the experimental viscosimetric parameter has been determined from intrinsic viscosity data of a polymer (3) in a "binary solvent" (solvent + polymer (2)). It has been clearly shown that composition‐dependent parameters are necessary to reproduce the experimental viscosity data.