Dispersions of internally liquid crystalline systems stabilized by charged disklike particles as pickering emulsions: basic properties and time-resolved behavior

Langmuir : the ACS Journal of Surfaces and Colloids
Anniina SalonenOtto Glatter

Abstract

The present paper reports on dispersions of internally liquid crystalline particles, formed from monoglyceride and oil mixtures, stabilized with discrete disklike particles of Laponite clay. Small-angle X-ray scattering (SAXS) was used to probe the presence of dispersed particles as well as their internal liquid crystalline structure. The data were compared to scattering results of reference systems, namely, from the bulk as well as from well-defined particles formed with a polymer as the emulsifier. The submicrometer sizes of the various particles could be derived using dynamic light scattering (DLS). The possible mechanisms involved in the stabilization of each of the different phases by the Laponite platelets, including the role of the residual salt, are discussed. Time-resolved experiments were performed over 60 days in order to follow the evolution of both the internal structure and size of the particles. In particular, we discuss the peculiar behavior of the sample without added oil, where the cubosomes transform into hexosomes over time. The effect of the high pH induced by the Laponite platelets in water, which could result in a hydrolysis of the monoglycerides, was shown to be responsible for the observed cubosome-to-h...Continue Reading

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Citations

Apr 6, 2012·Pharmaceutical Research·Sharvil S PatilAnant R Paradkar
Jan 6, 2012·Molecular Pharmaceutics·Sharvil S PatilAnant R Paradkar
Feb 25, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Amin SadeghpourOtto Glatter
Feb 5, 2014·Expert Opinion on Drug Delivery·Alexandre LancelotJosé Luis Serrano
Aug 31, 2010·Journal of Colloid and Interface Science·Justyna FrelichowskaYves Chevalier
Nov 27, 2009·Journal of Colloid and Interface Science·François MullerOtto Glatter
Aug 18, 2009·Colloids and Surfaces. B, Biointerfaces·Dima LibsterNissim Garti
May 26, 2009·Journal of Colloid and Interface Science·Khwanrat ChatjaroenpornGregory G Warr
Feb 27, 2009·Journal of Colloid and Interface Science·Samuel GuillotJean-François Tranchant
Sep 23, 2008·Advances in Colloid and Interface Science·Anan Yaghmur, Otto Glatter
Dec 25, 2010·Physical Chemistry Chemical Physics : PCCP·Chandrashekhar V KulkarniSilvia Ahualli
Aug 12, 2016·Soft Matter·Laure RidelYves Chevalier
Jun 10, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Matija TomsicOtto Glatter
May 7, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Anniina SalonenOtto Glatter
Oct 24, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Guang ChuEyal Zussman
Dec 14, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Martin Dulle, Otto Glatter
Nov 3, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·John JaniakKarin Schillén

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