Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10377746 | Journal of Colloid and Interface Science | 2005 | 5 Pages |
Abstract
A method to calculate and predict the surface tension of n-alkanes including heptane, eicosane, docosane, tetracosane, and their asymmetric mixtures has been proposed. Reduced coordinates, Ïâ and Tâ, where Ïâ is the reduced surface tension and Tâ is the reduced temperature, are introduced for the prediction of surface tension. According to the phenomenological scaling and considering the law of corresponding states correlation, these reduced coordinates result in a single curve for the surface tension as a function of temperature. In the correlation the melting temperature, Tm, is applied as the corresponding temperature for these substances and their mixtures. The relationship between Ïâ and Tâ has a linear form and is expressed by Ïâ=a+bTâ, where a and b are temperature-independent constants. With this relationship the predicted values of surface tension of these substances and their mixtures are in good agreement with experimental ones. %AAD, percent average absolute deviation, for these four pure n-alkanes is 1.02% and for their four asymmetric mixtures is less than 0.70%.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Setareh Sheikh,