Surface Tension Determination with a Teflon Rod

Autor: Buboltz, J. T., Huang, J., Feigenson, G. W.
Zdroj: Langmuir; August 17, 1999, Vol. 15 Issue: 17 p5444-5447, 4p
Abstrakt: The rod-pull method originally described by Padday4 has proven a useful technique for the determination of surface tension. However, as generally practiced, it requires that the sample wets well the bottom of the rod. A variation on this method is described in which a low surface energy substrate makes contact with the sample. A smooth-bottomed rod of Teflon is used, and the surface tension of nonwetting samples is determined by fitting an experimental force curve to a family of simulated curves. The use of a low surface energy substrate may be of some utility in the study of fragile interfacial films.
Databáze: Supplemental Index