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Rheologica Acta

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01.08.2009 | Original Contribution

An empirical constitutive law for concentrated colloidal suspensions in the approach of the glass transition

verfasst von: H. Henning Winter, Miriam Siebenbürger, David Hajnal, Oliver Henrich, Matthias Fuchs, Matthias Ballauff

Erschienen in: Rheologica Acta | Ausgabe 7/2009

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Abstract

Concentrated, non-crystallizing colloidal suspensions in their approach of the glass state exhibit distinct dynamics patterns. These patterns suggest a powerlaw rheological constitutive model for near-glass viscoelasticity, as presented here. The rheological parameters used for this model originate in the mode-coupling theory. The proposed constitutive model provides explicit expressions for the steady shear viscosity, the steady normal stress coefficient, the modulus-compliance relation, and the α peak of G″. The relaxation pattern distinctly differs from gelation.

Vorheriger Artikel Time-dependent NMR-velocimetry of a colloidal glass

Nächster Artikel Combined slit and plate–plate magnetorheometry of a magnetorheological fluid (MRF) and parameterization using the Casson model

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Titel: An empirical constitutive law for concentrated colloidal suspensions in the approach of the glass transition
verfasst von: H. Henning Winter
Miriam Siebenbürger
David Hajnal
Oliver Henrich
Matthias Fuchs
Matthias Ballauff
Publikationsdatum: 01.08.2009
Verlag: Springer-Verlag
Erschienen in: Rheologica Acta / Ausgabe 7/2009
Print ISSN: 0035-4511
Elektronische ISSN: 1435-1528
DOI: https://doi.org/10.1007/s00397-009-0377-5

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