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Water in oil emulsions from hydrophobized metal membranes and characterization of dynamic interfacial tension in membrane emulsification

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journal contribution
posted on 11.08.2017 by Pedro T. Santos Silva, Serena Morelli, Marijana Dragosavac, Victor Starov, Richard Holdich
Hydrophobization of metal surfaces is reported based on silanization reactions. The aim was its application to metal porous membranes for the production of water in oil emulsions using a process known as membrane emulsification. A vertical oscillating membrane system was used to carry out drop formation experiments. It is shown that drop size can be tuned between 35 and 85. μm by changing just the surfactant concentration in the continuous phase. In addition, a method to determine the percentage of active pores during the membrane emulsification process is demonstrated. This method links knowledge acquired in the surfactant adsorption dynamics and drop expansion rate. Using this approach, pore velocity can be determined, which will help in determining the boundary between dripping and jetting from a pore. This study reinforces the importance of dynamic interfacial tension which must be considered in process design, and modelling purposes, particularly in two liquid phase systems using membranes such as membrane emulsification.

Funding

This work was supported by Micropore Technologies Ltd and prepared in the framework of the Marie Curie Initial Training Network “Complex Wetting Phenomena” (CoWet), grant no. 607861.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Volume

532

Pages

77-86

Citation

SILVA, P.S., 2017. Water in oil emulsions from hydrophobized metal membranes and characterization of dynamic interfacial tension in membrane emulsification. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 532, pp. 77-86.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

19/06/2017

Publication date

2017-06-20

Notes

This paper was accepted for publication in the journal Colloids and Surfaces A: Physicochemical and Engineering Aspectss and the definitive published version is available at http://dx.doi.org/10.1016/j.colsurfa.2017.06.051

ISSN

0927-7757

Language

en

Exports