Colloids and Surfaces A 538 (2018) 765–773 Contents lists available at ScienceDirect Colloids and Surfaces A journal homepage: www.elsevier.com/locate/colsurfa Multi-modal stabilisation of emulsions using a combination of hydrophilic particles and an amino acid Facal Marina Paula A., Iliana Delcheva, David A. Beattie Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, SA 5095, Australia GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Emulsions have been formed using non-traditional particle stabilisers: hydrophilic silica particles which them- Emulsion selves are stabilised in suspension by L-lysine. The particles are produced using an adapted recipe for the pro- Silica nanoparticles duction of monodisperse nanoparticles (NPs) of small size (15 nm), with L-lysine used as a stabiliser and catalyst L-lysine during particle synthesis – and are termed SiO @Lysine. The resultant SiO @Lysine suspensions (particles and 2 2 Hexadecane residual L-lysine) are used to study the pH-dependent stabilisation of hexadecane-in-water emulsions. Our results Emulsion stability show that it is possible to stabilise hexadecane-in-water emulsions using these 15 nm SiO @Lysine NPs when the pH of the system is ﬁxed either at acidic pH (e.g. pH = 2.5) or alkaline pH (e.g. pH = 9.0). At high pH, the experimental evidence
Colloids and Surfaces A: Physicochemical and Engineering Aspects – Elsevier
Published: Feb 5, 2018
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