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J. Vrentas ; J. Duda | 1977The free-volume theory describing diffusion in polymer-solvent systems is reexamined. Calculation of the specific volume for such systems is discussed, and equations are presented for the determination of the self-diffusion coefficients of the p[...]article/chapitre/communication
J. Vrentas ; J. Duda | 1977A 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 i[...]article/chapitre/communication
J. Zielinski ; J. Duda | 1992The Ventras/Duda free-volume diffusion model accurately correlates polymer/solvent diffusion coefficients over wide ranges of concentration and temperature. Currently the model is semipredictive : limited diffusion data are required to estimate [...]
