Thermodynamics of polydisperse polymer solutions. I: Binary mixtures

The Lattice Fluid theory of polymer solutions, as reformulated recently, is extended to polydisperse polymer--solvent systems. Analytical expressions are given for all basic thermodynamic quantities of the mixture as well as for the spinodals and the critical points. The theory tested against experi...

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Bibliographic Details
Published inPolymer journal Vol. 21; no. 2; pp. 163 - 170
Main Authors KARAYIANNI, E, DAFNIOTIS, P, PANAYIOTOU, C
Format Journal Article
LanguageEnglish
Published Tokyo Society of Polymer Science 1989
Subjects
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Chemical solution
Thermodynamics
Polydispersed polymer
Experimental test
Theory
Cyclohexane
Styrene polymer
Critical temperature
Interaction parameter
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Summary:The Lattice Fluid theory of polymer solutions, as reformulated recently, is extended to polydisperse polymer--solvent systems. Analytical expressions are given for all basic thermodynamic quantities of the mixture as well as for the spinodals and the critical points. The theory tested against experimental data on volumes of mixing, Flory--Huggins chi interaction parameters, spinodal curves and critical points for a number of mixtures of well characterized polydisperse polystyrene samples with cyclohexane. Comparison has also been made with experimental critical behavior of polydisperse polymer--monodisperse polymer mixtures. The agreement between theory and experiment is satisfactory. Advantages and limitations of the theory are discussed. 31 ref.--AA
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0032-3896
1349-0540
DOI:10.1295/polymj.21.163