Jump to main content
Jump to site search

Issue 34, 2017

Interactions between silica particles in the presence of multivalent coions

Author affiliations

Abstract

Forces between charged silica particles in solutions of multivalent coions are measured with colloidal probe technique based on atomic force microscopy. The concentration of 1 : z electrolytes is systematically varied to understand the behavior of electrostatic interactions and double-layer properties in these systems. Although the coions are multivalent the Derjaguin, Landau, Verwey, and Overbeek (DLVO) theory perfectly describes the measured force profiles. The diffuse-layer potentials and regulation properties are extracted from the forces profiles by using the DLVO theory. The dependencies of the diffuse-layer potential and regulation parameter shift to lower concentration with increasing coion valence when plotted as a function of concentration of 1 : z salt. Interestingly, these profiles collapse to a master curve if plotted as a function of monovalent counterion concentration.

Graphical abstract: Interactions between silica particles in the presence of multivalent coions

Article information


Submitted
13 Jun 2017
Accepted
22 Jul 2017
First published
25 Jul 2017

Soft Matter, 2017,13, 5741-5748
Article type
Paper

Interactions between silica particles in the presence of multivalent coions

B. Uzelac, V. Valmacco and G. Trefalt, Soft Matter, 2017, 13, 5741 DOI: 10.1039/C7SM01168G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements