Journal
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
Volume 18, Issue 6, Pages 532-541Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.cocis.2013.11.004
Keywords
Pickering emulsions; Microgels; Interfaces; Interfacial packing; Responsiveness; Smart materials
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Colloidal gel particles called microgels have shown their ability to adsorb at an oil-water interface and stabilise emulsion named Pickering emulsions. Such particles are soft, deformable, and porous, and they can swell or contract under the action of an external stimulus. These specificities make them emulsifiers of special interest as they offer a large versatility to emulsions and materials elaborated thereof. This modularity is in counterpart at the origin of an abundant and often contradictory literature. The aim of this paper is to review recent advances in the emulsion stabilisation mechanism, particularly focusing on the microgel conformation at the interface in relation with the mechanical interface behaviour and the emulsion macroscopic stability. A sum up of the unambiguous knowledge is also proposed as well as few central questions that remain to be answered to in the domain. (C) 2013 Elsevier Ltd. All rights reserved.
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