Emulsions stabilized with solid nanoparticles: Pickering emulsions

Chevalier, Yves; Bolzinger, Marie‐Alexandrine

doi:10.1016/j.colsurfa.2013.02.054

Cited by 1,438 publications

(925 citation statements)

References 147 publications

Supporting

Mentioning

884

Contrasting

Unclassified

Order By: Relevance

“…Accumulation of particles at the interface and their stabilizing effect has been known for O/W emulsions for over a century and is regularly reviewed (Aveyard, Binks and Clint, 2003;Binks and Horozov, 2006;Chevalier and Bolzinger, 2013;Dickinson, 2012) . This type of emulsion is often called Pickering emulsion after one of the discoverers of this phenomenon (Pickering, 1907) .…”

Section: Introductionmentioning

confidence: 99%

Particle stabilized water in water emulsions

2017

View full text Add to dashboard Cite

Food products often contain mixtures of incompatible water soluble macromolecules such as proteins and polysaccharides. When two aqueous solutions of incompatible macromolecules are mixed they separate into two phases each enriched in one of the two macromolecules. Contrary to oilwater (O/W) emulsions, water/water (W/W) emulsions cannot be stabilized by addition of surfactants and in food applications macroscopic phase separation is avoided by gelling one or both phases. However, recently it was shown that W/W emulsions can be stabilized to varying extents by addition of particles. Such particle stabilized emulsions are also known as Pickering emulsions and have been studied extensively for O/W emulsions. Here the literature on particle stabilization of W/W emulsions is reviewed. The behavior of particle stabilized W/W emulsions is found to be quite different from that of O/W emulsions due to the much smaller interfacial tension and the much larger length scale at which the interface expresses itself. Besides the particle size, interaction of the particles with the macromolecules in the mixture and with each other at the interface appears to play a decisive role for stabilization.

show abstract

Section: Introductionmentioning

confidence: 99%

Particle stabilized water in water emulsions

2017

View full text Add to dashboard Cite

show abstract

“…For this purpose, the drug (a part of the microcapsule core) can be treated with a solution of cerium salt or a sol of cerium oxide nanoparticles prior to addition of the polyelectrolyte. Moreover, if the drug has an acidic functional group and is insoluble in water or if the drug is a slightly polar liquid (a slightly polar solid soluble in non-polar or weakly polar liquid), then the particles capable of performing the function of the microcapsule core can be formed directly in the sol of ceria by injection/homogenization (to form a Pickering emulsion [46]). In the literature, there are many examples of the preparation of drug-based sols using nanoparticles.…”

Section: The Hypothesis Assessment and Reviewmentioning

confidence: 99%

Layer-by-layer capsules as smart delivery systems of CeO2 nanoparticle-based theranostic agents

Popova¹,

Попов²,

Shcherbakov³

et al. 2017

Nanosystems: Phys. Chem. Math.

View full text Add to dashboard Cite

Modern methods of cancer treatment include chemotherapy and radiotherapy, but they are often characterized by low efficacy and high toxicity. The effectiveness of cancer therapy is often limited by a lack of effective systems for drug delivery to the tumor site. Cerium oxide nanoparticles are able to act as radioprotectors and as radiosensitizers exhibiting selective toxicity in the tumor microenvironment, providing for their tremendous potential in treating cancer. However, methods for controlled delivery of CeO 2 nanoparticles to the tumor have not been investigated nor described yet. In this article, we consider different approaches to the development of new ceria nanoparticle-based theranostic agents. Modification of polyelectrolyte microcapsules with nano-ceria appears to be the most promising method. Our design proposals are based on the synergistic pharmacological action of ceria-based nanomaterials and anticancer pharmaceuticals with the ability to control and visualize their sites of localization.

show abstract

“…A Pickering or Ramsden emulsion is an emulsion stabilised by colloidal particles adsorbed onto the interface between the two liquids (Chevalier and Bolzinger, 2013). The particles spontaneously adsorb on the interface, provided that the surface energy between the water and oil phase, ow γ exceeds the difference in interfacial tensions between the particle and the water phase, pw γ and between the particle and the oil phase, po γ :…”

Section: Integration Of Membrane Emulsification and Interfacial Partimentioning

confidence: 99%

Structured microparticles with tailored properties produced by membrane emulsification

Vladisavljević

2015

Advances in Colloid and Interface Science

View full text Add to dashboard Cite

This paper provides an overview of membrane emulsification routes for fabrication of structured microparticles with tailored properties for specific applications. Direct (bottom-up) and premix (top-down) membrane emulsification processes are discussed including operational, formulation and membrane factors that control the droplet size and droplet generation regimes. A special emphasis was put on different methods of controlled shear generation on membrane surface, such as cross flow on the membrane surface, swirl flow, forward and backward flow pulsations in the continuous phase and membrane oscillations and rotations. Droplets produced by membrane emulsification can be used for synthesis of particles with versatile morphology (solid and hollow, matrix and core/shell, spherical and non-spherical, porous and coherent, composite and homogeneous), which can be surface functionalised and coated or loaded with macromolecules, nanoparticles, quantum dots, drugs, phase change materials and high molecular weight gases to achieve controlled/targeted drug release and impart special optical, chemical, electrical, acoustic, thermal and magnetic properties. The template emulsions including metal-in-oil, solid-in-oil-in-water, oil-in-oil, multilayer, and Pickering emulsions can be produced with high encapsulation efficiency of encapsulated materials and narrow size distribution and transformed into structured particles using a variety of different processes, such as polymerisation (suspension, mini-emulsion, interfacial and in-situ), ionic gelation, chemical crosslinking, melt solidification, internal phase separation, layer-by-layer electrostatic deposition, particle self-assembly, complex coacervation, spray drying, sol-gel processing, and molecular imprinting. Particles fabricated from droplets produced by membrane emulsification include nanoclusters, colloidosomes, carbon aerogel particles, nanoshells, polymeric (molecularly imprinted, hypercrosslinked, Janus and core/shell) particles, solder metal powders and inorganic particles. Membrane 2 emulsification devices operate under constant temperature due to low shear rates on the membrane surface, which range from (1−10) × 10 3 s −1 in a direct process to (1−10) × 10 4 s −1 in a premix process.Keywords: Membrane Emulsification; Polymeric microsphere; Microgel; Janus Particle; Core/Shell Particle, Colloidosome. Membrane emulsificationMembrane emulsification (ME) involves preparation of emulsions by pressing a pure dispersed phase or pre-emulsified mixture of the dispersed and continuous phase through a microporous membrane under controlled injection rate and shear conditions. In direct membrane emulsification (DME), one liquid (a dispersed phase) is injected through a microporous membrane into another immiscible liquid (the continuous phase) (Nakashima et al., 1991;, which leads to the formation of droplets at the membrane/continuous phase interface ( Figure 1a). In premix membrane emulsification (PME) (Figure 1b), a pre-emulsion is pressed through the membrane (...

show abstract

Emulsions stabilized with solid nanoparticles: Pickering emulsions

Cited by 1,438 publications

References 147 publications

Particle stabilized water in water emulsions

Particle stabilized water in water emulsions

Layer-by-layer capsules as smart delivery systems of CeO2 nanoparticle-based theranostic agents

Structured microparticles with tailored properties produced by membrane emulsification

Contact Info

Product

Resources

About