Microfluidic generation of monodisperse ultra-low interfacial tension oil droplets in water
journal contributionposted on 2016-12-15, 14:14 authored by Guido 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.
This work was supported by EPSRC grants EP/I013342/1 and EP/G00465X/1.
- Aeronautical, Automotive, Chemical and Materials Engineering
- Chemical Engineering
Published inRSC Advances
Pages8114 - 8121
CitationBOLOGNESI, G. ... et al, 2015. Microfluidic generation of monodisperse ultra-low interfacial tension oil droplets in water. RSC Advances, 5 (11), pp. 8114 - 8121.
PublisherRoyal Society of Chemistry
- VoR (Version of Record)
Publisher statementThis 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/
NotesThis 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/