Article
Wetting Study of Imidazolium Ionic Liquids
Journal of Colloid and Interface Science
(2009)
Abstract
In this work, we present a systematic contact angles study of a series of 1-alkyl, 3-methyl-imidazolium ionic liquids (ILs) on well-defined polar and nonpolar monolayer surfaces supported on Si wafers. The advancing and receding contact angles of ILs were used to determine the surface energy of the monolayer surfaces using Neumann's equation-of-state and Zisman's critical surface tension approaches. In parallel, the contact angles of conventional probe fluids (molecular liquids) including water, formamide, methylene iodide, ethylene glycol, and hexadecane were determined on the same surfaces. The results obtained showed a great deal of similarity in wetting behavior of ionic vs molecular probe fluids: the contact angles of both sets of liquids followed the same patterns in accord with the surface tension of the fluid. A good agreement was found between the surface energy determined by different sets of liquids.
Keywords
- Ionic liquids,
- Binary mixtures,
- Pure ionic
Disciplines
Publication Date
February 15, 2009
DOI
10.1016/j.jcis.2008.10.019
Citation Information
Alexander Y. Fadeev, Joe Cunder and Tyler Batchelor. "Wetting Study of Imidazolium Ionic Liquids" Journal of Colloid and Interface Science Vol. 330 Iss. 2 (2009) p. 415 - 420 Available at: http://works.bepress.com/alexander_fadeev/17/