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Microfluidic generation of monodisperse ultra-low interfacial tension oil droplets in water

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posted on 15.12.2016, 14:14 by Guido BolognesiGuido Bolognesi, Alex Hargreaves, Andrew D. Ward, Andrew K. Kirby, Colin D. Bain, Oscar Ces
We present a novel microfluidic approach for the generation of monodisperse oil droplets in water with interfacial tensions of the order of 1 μN m-1. Using an oil-in-water emulsion containing the surfactant aerosol OT, heptane, water and sodium chloride under conditions close to the microemulsion phase transition, we actively controlled the surface tension at the liquid-liquid interface within the microfluidic device in order to produce monodisperse droplets. These droplets exhibited high levels of stability with respect to rupture and coalescence rates. Confirmation that the resultant emulsions were in the ultra-low tension regime was determined using real space detection of thermally-induced capillary waves at the droplet interface.

Funding

This work was supported by EPSRC grants EP/I013342/1 and EP/G00465X/1.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

RSC Advances

Volume

5

Issue

11

Pages

8114 - 8121

Citation

BOLOGNESI, G. ... et al, 2015. Microfluidic generation of monodisperse ultra-low interfacial tension oil droplets in water. RSC Advances, 5 (11), pp. 8114 - 8121.

Publisher

Royal Society of Chemistry

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/

Publication date

2015

Notes

This is an open access article published by the Royal Society of Chemistry and distributed under the terms of the Creative Commons Attribution Licence (CC BY 3.0), https://creativecommons.org/licenses/by/3.0/

eISSN

2046-2069

Language

en

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