Quartz crystal microbalance as a device to measure the yield stress of colloidal suspensions

Botha, Johannes A., Ding, Wei, Hunter, Timothy N., Biggs, Simon, Mackay, Graham A., Cowley, Robin, Woodbury, Simon E., and Harbottle, David (2018) Quartz crystal microbalance as a device to measure the yield stress of colloidal suspensions. Colloids and Surfaces A: physicochemical and engineering aspects, 546. pp. 179-185.

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The application of quartz crystal microbalance (QCM) as a device to measure the rheology of colloidal suspensions has been studied. Using a commercial dip-probe QCM, the yield stress of magnesium hydroxide suspensions has been correlated to the resonance properties of a 5 MHz AT-cut quartz sensor. A stable resonance baseline was first established in air before submerging the sensor into the colloidal suspension. The response of the sensor resistance was shown to correlate to changes in the suspension yield stress, while the frequency response was found to result from more complex contact mechanics and suspension viscoelasticity contributions. Since the QCM is a relatively simple technique with no mechanically moving parts, this approach offers the potential for rapid in situ rheology assessment.

Item ID: 73339
Item Type: Article (Research - C1)
ISSN: 1873-4359
Keywords: Colloids, Quartz crystal microbalance, Suspension rheology
Copyright Information: © 2018 Elsevier B.V. All rights reserved.
Date Deposited: 25 Aug 2022 23:22
FoR Codes: 34 CHEMICAL SCIENCES > 3406 Physical chemistry > 340603 Colloid and surface chemistry @ 100%
SEO Codes: 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering @ 100%
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