Ultrasonic monitoring of oil-in-water emulsion undergoing depletion flocculation

Fillery-Travis, Annette, Hibberd, D., Holmes, A., Garrood, M., Robins, M. and Chalis, R. (1997) Ultrasonic monitoring of oil-in-water emulsion undergoing depletion flocculation. Journal of Colloid and Interface Science, 193 (1) . pp. 77-87. ISSN 0021-9797 [Article] (doi:10.1006/jcis.1997.5057)


The paper describes a three-part experiment on flocculating emulsions in order to determine whether ultrasonic spectroscopy could be used to detect and characterize the flocculation process. Three emulsions which represented unflocculated, partially flocculated, and fully flocculated systems were prepared. They were characterized independently using direct microscopic examination and their creaming behavior. Ultrasonic spectroscopic measurements of the flocculating emulsions showed large changes during the flocculation process, which were not readily modeled using single particle scattering theory. The ultrasonic properties of the unflocculated emulsion did not change during the measurement period. The results demonstrate that ultrasonic techniques are capable of detecting the flocculation process. There is clear potential to use ultrasonic techniques to characterize flocculated structures, but more work is needed on the theoretical analysis of the interaction of ultrasound with particle aggregates.

Item Type: Article
Research Areas: A. > Work and Learning Research Centre
Item ID: 17726
Useful Links:
Depositing User: Paul Stapleton
Date Deposited: 29 Sep 2015 09:17
Last Modified: 09 May 2017 11:16
URI: https://eprints.mdx.ac.uk/id/eprint/17726

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