Bubbles: Interaction with solid surfaces

Nguyen, Anh V., Drelich, Jaroslav, Colic, Miroslav, Nalaskowski, Jakub and Miller, Jan D. (2006) Bubbles: Interaction with solid surfaces in Ponisseril Somasundaran and Arthur Hubbard (eds.) Encyclopedia of surface and colloid science. 2nd Boca Raton, FL: Taylor & Francis


Author Nguyen, Anh V.
Drelich, Jaroslav
Colic, Miroslav
Nalaskowski, Jakub
Miller, Jan D.
Title of entry Bubbles: Interaction with solid surfaces
Parent publication Encyclopedia of surface and colloid science
Place of publication Boca Raton, FL
Publisher Taylor & Francis
Publication date 2006
Edition 2nd
Editor Ponisseril Somasundaran
Arthur Hubbard
ISBN 9780849396151
9780849396144
Start page 1
End page 29
Total pages 29
Language eng
Subjects 030603 Colloid and Surface Chemistry
Abstract/Summary Interaction of bubbles with solid surfaces is considered with respect to approach/contact, film rupture, and bubble attachment, with particle separation by flotation as the classic example. During approach/contact, bubble deformation may occur, and the interaction involves momentum transfer as described by hydrodynamic forces. Subsequent interaction involving film rupture is governed by interfacial forces, including van der Waals forces, electrostatic forces, hydration forces, and hydrophobic forces. The structure and stability of the film are considered with respect to interfacial water structure and the presence of surface-stabilized, nanosize gas bubbles. Featured properties of the solid surface (roughness, heterogeneity) have a significant influence on water film stability and rupture. Finally, the bubble attachment is examined in terms of the three-phase line of contact, its formation, and relaxation.
Keyword Bubbles
Surfaces
Interaction
Interfacial forces
Flotation
Attachment
Hydrophobicity
Film stability
Wetting
Particle separation
Additional Notes This paper only published in the electronic edition

 
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