https://doi.org/10.1140/epje/s10189-023-00294-7
Regular Article – Flowing Matter
Aggregation kinetics of a concentrated colloidal suspension under oscillatory flow
1
Sika Technology AG, Tüffenwies 16, 8048, Zurich, Switzerland
2
IPCMS/CNRS, Université de Strasbourg, 23 rue du Loess, 67034, Strasbourg, France
c
pascal.hebraud@ipcms.unistra.fr
Received:
11
January
2023
Accepted:
22
April
2023
Published online:
23
June
2023
The aggregation behavior of an attractive colloidal silica suspension under oscillatory flow is studied using rheological measurement. We show that the competition between the aggregation of the particles and the aggregate breakup under external stress leads to a non-monotonous evolution of the elastic modulus with time. Remarkably, under certain conditions, the elasticity is not an increasing function of time but exhibits a maximum. The value of the maximum of the elastic modulus depends on the applied shear amplitude and the ionic strength of the suspension. Scaling laws that describes the evolutions of the elastic modulus as a function of the salinity and of the deformation amplitude are proposed and discussed.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
