Preparation of particle-stabilized emulsions using membrane emulsification

Yuan, Qingchun, Cayre, Olivier J., Mangan, Mohamed, Williams, Richard A. and Biggs, Simon (2010) Preparation of particle-stabilized emulsions using membrane emulsification. Soft Matter, 6 7: 1580-1588. doi:10.1039/b921372d


Author Yuan, Qingchun
Cayre, Olivier J.
Mangan, Mohamed
Williams, Richard A.
Biggs, Simon
Title Preparation of particle-stabilized emulsions using membrane emulsification
Journal name Soft Matter   Check publisher's open access policy
ISSN 1744-683X
1744-6848
Publication date 2010-01-01
Sub-type Article (original research)
DOI 10.1039/b921372d
Open Access Status Not Open Access
Volume 6
Issue 7
Start page 1580
End page 1588
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Abstract There is currently significant interest in particle-stabilized emulsions for a variety of applications and as precursors to other materials such as microcapsules or colloidosomes. A prerequisite for many applications is the ability to produce stable droplets with a well-controlled size. The preparation of oil-in-water (o/w) emulsions stabilized by silica colloids has been demonstrated here using membrane emulsification techniques. Emulsions were produced using both a cross-flow membrane device and a rotating membrane reactor. Under the correct conditions, highly stable emulsions with very narrow droplet size distributions can be produced. Investigations into the effects of changing the cross-flow shear rate at a fixed droplet production rate illustrate the fine control over mean droplet size that is possible with these emulsification techniques. Evidence for the importance of particle adsorption kinetics onto growing droplets prior to detachment from the membrane surface was obtained by varying the droplet production rate under fixed shear conditions. The presence of a critical surface coverage by the stabilizing particles to prevent droplet coalescence was clearly seen. Comparison with samples produced using conventional high-shear homogenization highlights the improved control over size distribution available from these membrane techniques.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Faculty of Engineering, Architecture and Information Technology Publications
 
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