Effect of nanobubbles on friction forces between hydrophobic surfaces in water

Hampton, M. A., Donose, B. C., Taran, E. and Nguyen, A. V. (2009) Effect of nanobubbles on friction forces between hydrophobic surfaces in water. Journal of Colloid and Interface Science, 329 1: 202-207. doi:10.1016/j.jcis.2008.09.040

Author Hampton, M. A.
Donose, B. C.
Taran, E.
Nguyen, A. V.
Title Effect of nanobubbles on friction forces between hydrophobic surfaces in water
Journal name Journal of Colloid and Interface Science   Check publisher's open access policy
ISSN 0021-9797
Publication date 2009-01-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.jcis.2008.09.040
Volume 329
Issue 1
Start page 202
End page 207
Total pages 6
Place of publication New York
Publisher Academic Press
Language eng
Subject C1
970103 Expanding Knowledge in the Chemical Sciences
030603 Colloid and Surface Chemistry
Abstract The interaction between hydrophobic surfaces in aqueous solutions is particularly important because it is encountered in many industrial processes. Even though advances in surface science have been tremendous, the nature of the hydrophobic interaction remains one of the greatest challenges to the field. In this work an atomic force microscope (AFM) was used to measure the normal and lateral interactions between a silica bead and a smooth silica substrate hydrophobized by esterification with 1-octanol. The experiments were performed in water and in water after alcohol–water exchange, a method that has been shown to increase the occurrence and size of nanobubbles at the hydrophobic surface and in turn result in a longer range hydrophobic force due to capillary bridge formation. It was found that the alcohol– water exchange had a significant impact on the friction force due to the increased size of the capillary, which increased adhesion.
Keyword Friction
Hydrophobic force
Atomic force microscopy
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Australian Institute for Bioengineering and Nanotechnology Publications
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Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 16 Sep 2009, 13:49:59 EST by Dr Elena Taran on behalf of School of Chemical Engineering