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Issue 11, 2012
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Controllable gas/liquid/liquid double emulsions in a dual-coaxial microfluidic device

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Abstract

This article presents a simple and novel approach to prepare monodispersed gas-in-oil-in-water (G/O/W) and gas-in-water-in-oil (G/W/O) double-emulsions in the same dual-coaxial microfluidic device. The effects of three phase flow rates on the sizes of microbubbles and droplets and the number of the encapsulated microbubbles were systematically studied. We successfully synthesized two different types of gas/liquid/liquid (G/L/L) double emulsions with different inner structures in the same geometry by adjusting the flow rates sequentially. Mathematical models were developed to predict the size and structures of the double emulsions. This simple approach gives a new idea for preparing hollow and porous microspheres with microbubbles as the direct core/pores templates.

Graphical abstract: Controllable gas/liquid/liquid double emulsions in a dual-coaxial microfluidic device

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Publication details

The article was received on 02 Dec 2011, accepted on 07 Mar 2012 and first published on 15 Mar 2012


Article type: Paper
DOI: 10.1039/C2LC21193A
Citation: Lab Chip, 2012,12, 2029-2036
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    Controllable gas/liquid/liquid double emulsions in a dual-coaxial microfluidic device

    J. Xu, R. Chen, Y. Wang and G. Luo, Lab Chip, 2012, 12, 2029
    DOI: 10.1039/C2LC21193A

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