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Forces between different latex particles in aqueous electrolyte solutions measured with the colloidal probe technique

Authors :
F Javier Montes, Ruiz-Cabello
Mohsen, Moazzami-Gudarzi
Magdalena, Elzbieciak-Wodka
Plinio, Maroni
Source :
Microscopy research and technique. 80(1)
Publication Year :
2015

Abstract

In this article, a compilation of results on direct force measurements between colloidal particles in monovalent salts carried out with the colloidal probe technique based on Atomic Force Microscopy was presented. The interaction forces between similar and dissimilar particles was studied and it was concluded that, in general, these force profiles may be satisfactorily quantified by the DLVO theory down to distances of few nanometers. However, in the specific case where the charge of one of the involved particle is close to neutral, it was found that the surface potential of this particle may change its sign depending on the sign of charge of the opposite particle. In this respect, the assumption that the surface potential of a particle is a property only related to the particle surface features and the bulk properties is called into question. Microsc. Res. Tech. 80:144-152, 2017. © 2016 Wiley Periodicals, Inc.

Details

ISSN :
10970029
Volume :
80
Issue :
1
Database :
OpenAIRE
Journal :
Microscopy research and technique
Accession number :
edsair.pmid..........e736568b3e7ffccc9f886419d2be776b