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The determination of the thermodynamic interaction parameter χ in polymer blends
Author(s) -
Riedl Bernard,
Prud'homme Robert E.
Publication year - 1984
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.760241705
Subject(s) - miscibility , flory–huggins solution theory , materials science , inverse gas chromatography , polymer , sorption , melting point depression , neutron scattering , thermodynamics , scattering , polymer blend , spinodal decomposition , phase (matter) , small angle neutron scattering , melting point , chemistry , organic chemistry , copolymer , adsorption , composite material , physics , optics
The miscibility of polymer blends is related to the polymer‐polymer interaction parameter χ 23 , Several methods can be used to evaluate this parameter and five of the most important ones are reviewed: two equilibrium methods (melting‐point depression and vapor sorption), a transport method (inverse‐phase gas chromatography) and two scattering methods (neutron scattering and small‐angle x‐ray scattering). Examples are cited where χ 23 values for a given blend were determined by several of these methods. This comparison leads to the conclusion that a reasonable agreement is often reached despite conceptual differences between the methods involved.
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