Titre :
|
Diffusion in polymer-solvent systems. II. A predictive theory for the dependence of diffusion coefficients on temperature, concentration, and molecular weight
|
Auteurs :
|
J. Vrentas ;
J. Duda
|
Type de document :
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article/chapitre/communication
|
Année de publication :
|
1977
|
Format :
|
p. 417-439
|
Langues:
|
= Anglais
|
Catégories :
|
MATERIAUX
PROCEDES DE SEPARATION
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Mots-clés:
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DIFFUSION
;
POLYMERE
;
CONCENTRATION
;
COEFFICIENT DE CONDUCTIVITE THERMIQUE
;
THERMODYNAMIQUE
;
POLYSTYRENE
;
THEORIE
|
Résumé :
|
A new free-volume theory is combined with the thermodynamic theory of Flory and the entanglement theory of Bueche to provide a means of predicting the temperature, concentration, and molecular weight dependence of mutual-diffusion coefficients in amorphous polymer-solvent systems. The predictions of the theory are compared with actual data for the ethylbenzene-polystyrene system.
|
Source :
|
Journal of polymer science, vol.15
|