Effect of nanobubbles on friction forces between hydrophobic surfaces in water
Marc A Hampton, Bogdan C Donose, Elena Taran, Anh V Nguyen
Journal of Colloid and Interface Science | ACADEMIC PRESS INC ELSEVIER SCIENCE | Published : 2009
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..View full abstract
The authors gratefully acknowledge the Australia Research Council for financial support through a Discovery Project grant, Professor Phil Attard from the University of Sydney for helpful discussions, and the CMM at the University Of Queensland for use of the Veeco Nanoscope IV AFM.