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Issue 11, 2015
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Microfluidic generation of monodisperse ultra-low interfacial tension oil droplets in water

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Abstract

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.

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

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Publication details

The article was received on 21 Nov 2014, accepted on 22 Dec 2014 and first published on 22 Dec 2014


Article type: Paper
DOI: 10.1039/C4RA14967J
Citation: RSC Adv., 2015,5, 8114-8121
  • Open access: Creative Commons BY license
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    Microfluidic generation of monodisperse ultra-low interfacial tension oil droplets in water

    G. Bolognesi, A. Hargreaves, A. D. Ward, A. K. Kirby, C. D. Bain and O. Ces, RSC Adv., 2015, 5, 8114
    DOI: 10.1039/C4RA14967J

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