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Gradient theory of surface tension of pure fluids: Effect of molecular shape and polarity

✍ Scribed by Juan H. Pérez-López; Jorge E. Puig; Miguel A. Leiva

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
697 KB
Volume
172
Category
Article
ISSN
0378-4371

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✦ Synopsis

In this paper, we investigate the effect of molecular shape and multipolarity on interracial properties using a modified van der Waais theory of interfaces and an equation of state developed by Mohanty and Davis for attracting, nonspherical particles with a rigid, convex core. The equation of state contains, in addition to the classical van der Waals parameters. molecular shape and multipolar parameters. Our results indicate that the dimensionless surface tension of pure fluids varies linearly with the multipolar parameter ,rod exponentially with the molecular shape parameter. The agreement between our predictions and experimental data is good.

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Estimation of surface tension of pure fl
Estimation of surface tension of pure fluids using the gradient theory
✍ Juán H. Pérez-López; Luis J. González-Ortiz; Miguel A. Leiva; Jorge E. Puig 📂 Article 📅 1992 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 580 KB

The modvied van der Waals theory of interfaces (gradient theory) is used with the equations of state of Peng-Robinson and Mohanty-Davis to predict surface tensions of various nonpolar, quadrupolar, slightly polar and polar substances as a function of temperature. The influence parameter of the gradi