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Authors
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Bagusat, F. ; P. Schiller, O. Seidel, T. Zehl, H.-J. Mögel
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Title
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Optical detection of shear induced structure changes in concentrated suspensions
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Date
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28.03.2003
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Number
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300
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Abstract
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Several concentrated aqueous suspensions with kaolin, alumina or limestone as disperse phase show a particular non-Newtonian time dependent flow behavior. The apparent viscosity oscillates with time at constant shear rate. The oscillation period can range between a few minutes and 2 h. This behavior is assumed to be caused by shear induced structure changes. In order to detect these structure changes we have applied a fiber optical system for measuring the intensity of laser light reflected from a small part of the sheared suspension. We have found a correlation between the optical signal and the viscosity oscillations. © 2007 Elsevier B.V.
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Publisher
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Colloids and Surfaces A: Physicochemical and Engineering Aspects
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Wikidata
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Citation
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Colloids and Surfaces A: Physicochemical and Engineering Aspects 215 (2003) 131-136
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DOI
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https://doi.org/10.1016/S0927-7757(02)00441-7
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