Issue 11, 2012

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

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

Supplementary files

Article information

Article type
Paper
Submitted
02 Dec 2011
Accepted
07 Mar 2012
First published
15 Mar 2012

Lab Chip, 2012,12, 2029-2036

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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