Article ID Journal Published Year Pages File Type
595354 Colloids and Surfaces A: Physicochemical and Engineering Aspects 2010 9 Pages PDF
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.

Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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