Development of a predictive model for polymer/solvent diffusion coefficient calculations |
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| Authors: | F R Perioto M E T Alvarez W A Araujo M R Wolf‐Maciel R Maciel Filho |
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| Affiliation: | School of Chemical Engineering, Separation Process Development Laboratory, State University of Campinas, UNICAMP, 13083‐970 Campinas‐SP, Brazil |
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| Abstract: | A new calculation procedure for free‐volume parameters is considered in this work by using viscosity prediction methods and the Levenberg‐Marquardt calculation scheme. All parameters used in the Vrentas–Duda free‐volume theory can be estimated from pure component properties. The prediction results are compared with experimental data for some polymer/solvent systems. The diffusion coefficient calculated by Vrentas–Duda theory can be used in the modeling of membrane separation processes. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | free‐volume theory diffusion coefficients viscosity membrane separation process |
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