Issue 13, 2011

Emulsion inversion induced by CO2

Abstract

Herein it was found that CO2 could trigger an O/W to W/O emulsion inversion via a W/O/W nanoemulsion. In comparison with the conventionally used liquid or solid additives, the unusual advantage of this method is that the emulsion morphologies can be switched reversibly by the control of CO2 pressure. Besides, CO2 can be easily removed by depressurization and thus no extra separation process is needed, and CO2 can be recycled. Furthermore, other lipophilic gases of ethylene, propylene and isobutane can also induce the O/W to W/O emulsion inversion. A possible mechanism for the gas-triggered emulsion inversion was proposed.

Graphical abstract: Emulsion inversion induced by CO2

Supplementary files

Article information

Article type
Paper
Submitted
14 Dec 2010
Accepted
09 Feb 2011
First published
21 Feb 2011

Phys. Chem. Chem. Phys., 2011,13, 6065-6070

Emulsion inversion induced by CO2

J. Zhang, B. Han, Y. Zhao, W. Li and Y. Liu, Phys. Chem. Chem. Phys., 2011, 13, 6065 DOI: 10.1039/C0CP02870C

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