Particle-stabilized emulsions

Binks BP, Whitby CP (2004) Silica particle-stabilized emulsions of silicone oil and water aspects of emulsification. Langmuir 20(4) 1130-1137... 

Keywords Hollow spheres Nanoparticles Layer-by-layer assembly Tandem assembly Nanoparticle assembled capsule Interfacial stabilization - Particle stabilized emulsion... 

Horozov TS, Binks BP (2006) Particle-stabilized emulsions a bilayer or a bridging mono-layer Angew Chem Int Ed. 45(5) 773-776... 

Sinks BP, Clint JH, Fletcher PDl et al (2006) Growth of gold nanoparticle films driven by the coalescence of particle-stabilized emulsion drops. Langmuir 22(9) 4100-4103... 

Reference to Flotation at Solid-Particle Stabilized Emulsions, KoUoid-Z, 136, 107 (1954). 

Nanoparticles, being much smaller than the droplets and mainly wetted by the continuous phase, may also stabilize emulsion droplets [5, 6]. Emulsions thus stabilized are called pickering or particle-stabilized emulsions (PSE) . 

Akartuna, L, E.Tervoort, J. C. H. Wong, A. R. Studart, andL. 1. Gauckler. 2009. Macroporous polymers from particle-stabilized emulsions. Polymer 50 (15) (July) 3645-3651. doi 10.1016/j. polymer.2009.05.023. http //linkinghub.elsevier.eom/retrieve/pii/S0032386109004297. 

Colloidal silica particles can be used as shell constituent for emulsion tern-plating [19]. By adding an organic solvent (isopentyl acetate) and 3-methacryl-oxypropyltrimethoxysilane into an aqueous dispersion of colloidal silica (7, 12, and 25 nm in diameter), a particle-stabilized emulsion, called Pickering emulsion [20], with small droplet sizes was formed due to the low interfacial tension between the colloidal silica particles and monomers. After polymerization of organotrialkoxysilane, the organic solvent in the core was evaporated to form hollow particles with a porous shell. These hollow particles have a hydrophobic interior, which is potentially useftil for adsorbing hydrophobic contaminants in water. 

I. Akartuna, A. R. Studart, E. Tervoot, and L. J. Gauckler, "Macro porous ceramics from particle-stabilized emulsions," Adv. Mater., 20 (2008) 4714-4718. 

Kralchevsky, P.A., Ivanov, I.B., Ananfhapadmanabhan, K.P. and Lips, A. (2005) On the thermodynamics of particle-stabilized emulsions curvature effects and catastrophic phase inversion. Langmuir, 21, 50-63. 

Hannisdal, A., Ese, M.H., Hemmingsen, P.V. and Sjoblom, J. (2006) Particle-stabilized emulsions efiect of heavy cmde oil components pre-adsorbed onto stabilizing solids. Colloids and Surfaces A-Physicochemical and Engineering Aspects, 276, 45-58. 

Sterically Stabilized Nanoparticles at Liquid-Liquid InterbKes Fiem Particle-Stabilized Emulsions to Robust Materials... 

An exdting new development in hybrid materials assembly, using nanopartides and fluids, has recently appeared in the form of amorphous soft materials termed Triids. While bijds bear a resemblance to particle-stabilized emulsions, the term bijel refers spedfically to a bicontinuous interfadally jammed emulsion gel. The bijel thus consists of two continuous, interpenetrating fluid domains that are frozen (i.e., their phase separation is arrested) by a jammed monolayer of colloidal partides at the fluid-fluid interface. Bijds have been proposed to offer promise in many applications, from controlling physi-cal/mechanical properties of colloidal materials, to designing... 

The behavior of particles at interfaces undoubtedly has important practical consequences, not the least in determining the stability of foams and emulsions containing particles. Whereas aqueous foam stability and breakdown in the presence of hydrophobic particles have been reasonably well studied in recent years, there are still a number of problems to be resolved, including how particle irregularities, particle size, and dynamic wetting effects can be adequately treated. When it comes to emulsion stability in the presence of particles, far less systematic experimental work has been done. There are intriguing similarities between particle wettability (in particle-stabilized emulsions) and smfactant HLB (in surfactant-stabilized emulsions). The study of such similarities, both experimentally and theoretically, will no doubt prove rewarding. 

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