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Title: Modification of interfacial characteristics of monodisperse droplets produced using membrane emulsification by surfactant displacement and/or polyelectrolyte electrostatic deposition
Authors: Vladisavljevic, Goran T.
McClements, D. Julian
Keywords: Shirasu porous glass membrane
Membrane emulsification
Layer-by-layer electrostatic deposition
Chitosan
β-lactoglobulin
Multilayered emulsion
Issue Date: 2010
Publisher: © Elsevier
Citation: VLADISAVLJEVIC, G.T. and MCCLEMENTS, D.J., 2010. Modification of interfacial characteristics of monodisperse droplets produced using membrane emulsification by surfactant displacement and/or polyelectrolyte electrostatic deposition. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 364 (1-3), pp. 123-131.
Abstract: This study examined the possibility of modifying the interfacial characteristics of uniformly sized droplets produced by premix membrane emulsification using surfactant-displacement and/or electrostatic deposition methods. The non-ionic surfactant Tween 20 is particularly effective at producing uniformly sized lipid droplets by premix membrane emulsification, but the droplets produced have a low net charge. The interfacial characteristics of emulsion droplets initially coated by Tween 20 could be made either negative or positive (without altering droplet size) by adding controlled amounts of either anionic emulsifiers (SDS) or cationic emulsifiers (DTAB or β-lactoglobulin) to the continuous phase after homogenisation. In addition, cationic emulsion droplets could be prepared by depositing a cationic biopolymer (chitosan) onto the surfaces of anionic droplets (SDS/Tween coated). These results have important consequences for the design, fabrication and utilisation of uniformly sized lipid droplets with controlled interfacial characteristics.
Description: This article was published in the journal, Colloids and Surfaces A: Physicochemical and Engineering Aspects [© Elsevier] and the definitive version is available at: www.elsevier.com/locate/colsurfa
Version: Accepted for publication
DOI: 10.1016/j.colsurfa.2010.05.006
URI: https://dspace.lboro.ac.uk/2134/6496
ISSN: 0927-7757
Appears in Collections:Published Articles (Chemical Engineering)

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