Prediction of mutual diffusion coefficients for polymer–solvent systems
✍ Scribed by J. S. Vrentas; C. M. Vrentas
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 93 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0021-8995
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📜 SIMILAR VOLUMES
Several versions of free-volume theory have been proposed to correlate or predict the solvent diffusion coefficient of a polymer/solvent system. The quantity of free volume is usually determined by the Williams-Landel-Ferry (WLF) equation from viscosity data of the pure component in these theories.
New correlations, based on the rough hard-sphere theory and an extensive literature database, were developed for the determination of the binary difision coeficients of liquid and solid solutes in supercritical solvents. The correlations were tested to predict 107 solute-solvent systems with good re
## Abstract Recent publications by Zielinski and Hanley and by Alsoy and Duda have proposed relationships between self‐ and mutual‐diffusion coefficients in multicomponent systems that can be derived from Bearman's friction‐based theory. Subsequently, Zielinski and Alsoy published an article callin
The inverse gas chromatography (IGC) method has been evaluated as a method to determine diffusion coefficients in polymer-solvent systems near the glass transition temperature. The poly(vinyl acetate) -toluene system was used for this purpose. Diffusion and partition coefficients were measured over
## Abstract A corresponding states approach has been used successfully to correlate reduced self‐diffusivity of pure liquids with reduced temperature and acentric factor. In addition, dimensional analysis techniques have been used to accurately relate viscosity, normal boiling point and temperature