Viscoelasticity and shear flow of concentrated, non-crystallizing colloidal suspensions: Comparison with Mode-Coupling Theory

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dc.creatorSiebenbuerger, Miriam
dc.creatorFuchs, Matthias
dc.creatorWinter, Henning
dc.creatorBallauff, Matthias
dc.date2008-10-20
dc.date.accessioned2026-07-07T13:06:12Z
dc.date.available2026-07-07T13:06:12Z
dc.descriptionWe present a comprehensive rheological study of a suspension of thermosensitive particles dispersed in water. The volume fraction of these particles can be adjusted by the temperature of the system in a continuous fashion. Due to the finite polydispersity of the particles (standard deviation: 17%), crystallization is suppressed and no fluid-crystal transition intervenes. Hence, the moduli $G'$ and $G"$ in the linear viscoelastic regime as well as the flow curves (shear stress $σ(\dotγ)$ as the function of the shear rate $\dotγ$) could be measured in the fluid region up to the vicinity of the glass transition. Moreover, flow curves could be obtained over a range of shear rates of 8 orders of magnitude while $G'$ and $G"$ could be measured spanning over 9 orders of magnitude. Special emphasis has been laid on precise measurements down to the smallest shear rates/frequencies. It is demonstrated that mode-coupling theory generalized in the integration through transients framework provides a full description of the flow curves as well as the viscoelastic behavior of concentrated suspensions with a single set of well-defined parameters.
dc.identifierhttps://arxiv.org/abs/0810.3551
dc.identifierhttp://arxiv.org/abs/0810.3551
dc.identifierJ. Rheol 53, 707 (2009)
dc.identifierdoi:10.1122/1.3093088
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/227704
dc.subjectSoft Condensed Matter
dc.subjectDisordered Systems and Neural Networks
dc.titleViscoelasticity and shear flow of concentrated, non-crystallizing colloidal suspensions: Comparison with Mode-Coupling Theory
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