Issue 14, 2011
From the journal:

Soft Matter

Yielding of weakly attractive nanoparticle networks†

André R. Studart,*a   Esther Amstadb  and  Ludwig J. Gaucklerb  

* Corresponding authors

a Complex Materials, Department of Materials, ETH Zurich, Zurich, Switzerland
E-mail: andre.studart@mat.ethz.ch

b Nonmetallic Inorganic Materials, Department of Materials, ETH Zurich, Zurich, Switzerland

Abstract

We propose a scaling law that explicitly correlates the macroscopic yield stress of weakly attractive nanoparticle networks with features of the microscopic aggregates that form the percolating gel. The proposed law correctly predicts experimental data obtained from a model colloidal system covering a wide range of particle sizes, volume fractions and interparticle attractive forces. The agreement between theory and experiments supports the idea that yielding is ultimately caused by the rupture of a few interparticle bonds within the aggregates of the mechanically loaded network.

Graphical abstract: Yielding of weakly attractive nanoparticle networks

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Article information

DOI
https://doi.org/10.1039/C1SM05598D
Article type
Communication
Submitted
05 Apr 2011
Accepted
18 May 2011
First published
08 Jun 2011

Soft Matter, 2011,7, 6408-6412

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Yielding of weakly attractive nanoparticle networks

A. R. Studart, E. Amstad and L. J. Gauckler, Soft Matter, 2011, 7, 6408 DOI: 10.1039/C1SM05598D

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