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Erschienen in: Rheologica Acta 3/2008

01.04.2008 | Original Contribution

Shear thickening in electrically-stabilized colloidal suspensions

Erschienen in: Rheologica Acta | Ausgabe 3/2008

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Abstract

A theory is presented for the onset of shear thickening in colloidal suspensions of particles, stabilized by an electrostatic repulsion. Based on an activation model, a critical shear stress can be derived for the onset of shear thickening in dense suspensions for a constant potential and a constant charge approach of the spheres. Unlike previous models, the total interaction potential is taken into account (sum of attraction and repulsion). The critical shear stress is related to the maximum of the total interaction potential scaled by the free volume per particle. A comparison with experimental investigations shows the applicability of the theory.

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Metadaten
Titel
Shear thickening in electrically-stabilized colloidal suspensions
Publikationsdatum
01.04.2008
Erschienen in
Rheologica Acta / Ausgabe 3/2008
Print ISSN: 0035-4511
Elektronische ISSN: 1435-1528
DOI
https://doi.org/10.1007/s00397-007-0227-2

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