Structural transitions in sheared electrically stabilized colloidal crystals

J. Kaldasch, B. Senge, J. Laven

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

A Landau theory is presented for the structural transition of electrically stabilized colloidal crystals under shear. The model suggests that a structural transition from an ordered layered colloidal crystal into a disordered structure occurs at a critical shear stress. The shear induced structural transition is related to a change of the rheological properties caused by the variation of the microstructure which can be verified by scattering experiments. The theory is used to establish the shape of the flow curves. A good qualitative agreement with experimental results can be achieved, while a scaling relation similar to the elastic scaling is established.
Original languageEnglish
Article number909841
Pages (from-to)909841-1/7
Number of pages7
JournalJournal of Applied Chemistry
Volume2013
DOIs
Publication statusPublished - 2013

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shear
crystals
scaling
critical loading
shear stress
microstructure
curves
scattering

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Kaldasch, J. ; Senge, B. ; Laven, J. / Structural transitions in sheared electrically stabilized colloidal crystals. In: Journal of Applied Chemistry. 2013 ; Vol. 2013. pp. 909841-1/7.
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Structural transitions in sheared electrically stabilized colloidal crystals. / Kaldasch, J.; Senge, B.; Laven, J.

In: Journal of Applied Chemistry, Vol. 2013, 909841, 2013, p. 909841-1/7.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - A Landau theory is presented for the structural transition of electrically stabilized colloidal crystals under shear. The model suggests that a structural transition from an ordered layered colloidal crystal into a disordered structure occurs at a critical shear stress. The shear induced structural transition is related to a change of the rheological properties caused by the variation of the microstructure which can be verified by scattering experiments. The theory is used to establish the shape of the flow curves. A good qualitative agreement with experimental results can be achieved, while a scaling relation similar to the elastic scaling is established.

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