Difference between revisions of "Micelle"
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+ | [[Biocompatible surfactants for water-in-fluorocarbon emulsions]] | ||
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+ | [[Colloid Surfactants for Emulsion Stabilization]] | ||
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+ | [[Gravitational Stability of Suspensions of Attractive Colloidal Particles]] | ||
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+ | [[Surface roughness directed self-assembly of patchy particles into colloidal micelles]] |
Revision as of 21:37, 19 November 2012
Definition
A micelle is the self assembled sphere formed from surfactants in a hydrophilic liquid such as water. It is formed when surfactant hydrocarbons that have a hydrophilic charged head group and a long hydrophobic tail aggregate. The hydrophobic tails are attracted to each other and try to get out of their hydrophilic environment by bunching up. This leaves the hydrophobic heads pointing outwards where they are content in their environment. Micelles are often spherical, however they can be elliptical as well. Concentration, molecular structure, ionic strength, temperature, and pH, among other variables, all contribute to the geometry of the micelle formed.
Applications
Micelles have various applications, that are similar to the applications of surfactants. In biology, they are essential for dissolving any fats, or fat soluble vitamins in the body. Also, they are used in detergents to help cut away grease, again using their dissolving properties.
Reverse Micelles
Reverse micelles are the opposite of typical micelles - they form in a hydrophobic environment. These micelles have the hydrophilic heads aggregating in the center of the sphere, with the hydrophobic tailes pointing outwards. These micelle are used to form miniature test tubes because they create a nanoscale hydrophilic environment at their center where reactions can occur. One application of these is the formation of quantum dots at the center of these reverse micelles.
References
Keyword in references:
Irreversible nanogel formation in surfactant solutions by microporous flow
Liquid-infused structured surfaces with exceptional anti-biofouling performance
Liquid-Infused Nanostructured Surfaces with Extreme Anti-Ice and Anti-Frost Performance
Gravitational Stability of Suspensions of Attractive Colloidal Particles
Control of Shape and Size of Nanopillar Assembly by Adhesion-Mediated Elastocapillary Interaction
Shock-driven jamming and periodic fracture of particulate rafts
Surfactant-Assisted Synthesis of Uniform Titania Microspheres and Their Clusters
Velocity Profiles in Repulsive Athermal Systems under Shear
Novel Colloidal Interactions in Anisotropic Fluids
Surfactant-Mediated Two-Dimensional Crystallization of Colloidal Crystals
Universal non-diffusive slow dynamics in aging soft matter
Inverted and multiple nematic emulsions
Osmotic pressure and viscoelastic shear moduli of concentrated emulsions
Bacillus subtilis spreads by surfing on waves of surfactant
Structure of adhesive emulsions
Rheology of attractive emulsions
Assembly of Binary Colloidal Structures via Specific Biological Adhesion
Rheology of Binary Colloidal Structures Assembled via Specific Biological Cross-Linking
Biocompatible surfactants for water-in-fluorocarbon emulsions
Colloid Surfactants for Emulsion Stabilization
Gravitational Stability of Suspensions of Attractive Colloidal Particles
Surface roughness directed self-assembly of patchy particles into colloidal micelles