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Issue 17, 2013
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A novel microfluidic technology for the preparation of gas-in-oil-in-water emulsions

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Abstract

This paper presents a novel microfluidic method for the controllable generation of uniform gas-in-oil-in-water double emulsions with ultra-thin liquid films (2–12 μm) covering microbubbles (116–180 μm). This method combines one dispersion stage and a mass transfer-induced phase separation process in a simple co-flowing microchannel, instead of a complicated microfluidic device fabrication and a multistage dispersion process. In our experiments, CO2alkane gas mixtures (dispersed phase) and NaOH aqueous solutions (continuous phase) were utilized as working systems. The main factors affecting the diameter of the inner bubble and the volume of the oil film are discussed. Through our method, the monodispersed gas-in-oil-in-water emulsions can be prepared in a simple and precise way.

Graphical abstract: A novel microfluidic technology for the preparation of gas-in-oil-in-water emulsions

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Publication details

The article was received on 29 May 2013, accepted on 12 Jun 2013 and first published on 04 Jul 2013


Article type: Technical Innovation
DOI: 10.1039/C3LC50652E
Lab Chip, 2013,13, 3355-3359

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    A novel microfluidic technology for the preparation of gas-in-oil-in-water emulsions

    L. Yang, K. Wang, S. Mak, Y. Li and G. Luo, Lab Chip, 2013, 13, 3355
    DOI: 10.1039/C3LC50652E

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