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The simulation of phase diagrams for polymer blends at various pressures
Author(s) -
Rostami Shamsedin,
Walsh David J.
Publication year - 1987
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760270503
Subject(s) - binodal , spinodal , materials science , thermodynamics , phase diagram , equation of state , polymer , lower critical solution temperature , upper critical solution temperature , phase (matter) , critical point (mathematics) , sign (mathematics) , polymer blend , cloud point , statistical physics , mathematics , physics , composite material , organic chemistry , chemistry , mathematical analysis , copolymer , pulmonary surfactant
A procedure is described for the simultaneous prediction of the binodal and spinodal curves of polymer mixtures at various pressures using a form of the equation‐of‐state theory of Flory and co‐workers. The results of the calculation are compared with experimental results for the effect of pressure on the cloud points of both oligomer mixtures showing upper critical behavior and polymer mixtures showing lower critical behavior. The procedure successfully predicts the sign of the effect and its magnitude within the experimental and theoretical uncertainties for the systems studied.