Journal
ADVANCES IN COLLOID AND INTERFACE SCIENCE
Volume 225, Issue -, Pages 88-97Publisher
ELSEVIER
DOI: 10.1016/j.cis.2015.08.005
Keywords
Atomic force microscope; Dynamic forces; Deformation; Interfacial properties; Film drainage process
Categories
Funding
- National Natural Science Foundation of China
- Royal Society International Exchanges
- Program for New Century Excellent Talents in University
- Henry Fok Foundation
- Foundation for the Author of National Excellent Doctoral Dissertation of PR China
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The applications of Atomic Force Microscopy (AFM) on the study of dynamic interactions and film drainage between deformable bodies dispersed in aqueous solutions are reviewed in this article. Novel experimental designs and recent advances in experimental methodologies are presented, which show the advantage of using AFM as a tool for probing colloidal interactions. The effects of both DLVO and non-DLVO forces on the colloid stabilization mechanism are discussed. Good agreement is found between the force - drop/bubble deformation behaviour revealed by AFM measurements and the theoretical modeling of film drainage process, giving a convincing explanation of the occurrence of certain phenomenon. However, the behaviour and shape of deformable drops as they approach or retract is still not well resolved. In addition, when surfactants are present further research is needed on the absorption of surfactant molecules into the interfaces, their mobility and the effects on interfacial film properties. (C) 2015 Elsevier B.V. All rights reserved.
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