Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2109
Title: Effect of pH and hydration on the normal and lateral interaction forces between alumina surfaces
Authors: Polat, Mehmet
Sato, Katsuya
Nagaoka, Takaaki
Watari, Koji
Keywords: Atomic force microscopy
Colloids
Force curve
Force measurement; Hydration
pH effects
Surface measurement
Alumina
Issue Date: Dec-2006
Publisher: Elsevier Ltd.
Source: Polat, M., Sato, K., Nagaoka, T., and Watari, K. (2006). Effect of pH and hydration on the normal and lateral interaction forces between alumina surfaces. Journal of Colloid and Interface Science, 304(2), 378-387. doi:10.1016/j.jcis.2006.08.058
Abstract: Interaction forces between alumina surfaces were measured using an AFM-colloid probe method at different pHs. For an α-alumina-sapphire system at acidic pH, the force curve exhibited a well-defined repulsive barrier and an attractive minimum. At basic pH, the interactive force was repulsive at all separations with no primary minimum. Lateral force measurements under the same conditions showed that frictional forces were nearly an order of magnitude smaller at basic pH than those observed at acidic pH. This behavior was attributed to the hydration of the alumina surface. Normal and lateral force measurements with the strongly hydrated ρ-alumina surfaces supported these findings.
URI: https://doi.org/10.1016/j.jcis.2006.08.058
http://hdl.handle.net/11147/2109
ISSN: 0021-9797
0021-9797
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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