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What is the purpose of microemulsion?

What is the purpose of microemulsion?

Microemulsions have many commercially important uses: Water-in-oil microemulsions for some dry cleaning processes. Floor polishers and cleaners. Personal care products.

What is microemulsion example?

There are three kinds of microemulsions: oil dispersed in water (o/w), water dispersed in oil (w/o), and bicontinuous. The presence of o/w droplets is likely to be a characteristic of microemulsions where the amount of oil is low.

What is microemulsion method?

The microemulsion technique promises to be one of the versatile preparation method which enables to control the particle properties such as mechanisms of particle size control, geometry, morphology, homogeneity and surface area.

What is the difference between emulsion and microemulsion?

Emulsions are stable dispersions of immiscible liquids, but they are not thermodynamically stable. These type of dispersions are sometimes called macroemulsions. Microemulsions, on the other hand, are thermodynamically stable.

What is microemulsion size?

A microemulsion is a thermodynamically stable fluid. It is different from kinetically stable emulsions which will be break into oil and water over time. The particle size of microemulsions ranges from about 10 nm to 300 nm. Because of the small particle sizes, microemulsions appear as clear or translucent solutions.

How do you make a microemulsion?

Microemulsion was prepared by dissolving ramipril in orange oil. To this optimized ratio of surfactant-tween 80 and co-surfactant-propylene glycol was mixed followed by gentle mixing with distilled water.

What is microemulsion Slideshare?

Microemulsion is an isotropic mixture of oil, surfactant, Cosurfactant and drug. Upon mild agitation followed by dilution in aqueous media, such as gastrointestinal (GI) fluids, the systems can form fine oil in water (O/W) Microemulsions which usually have a droplet size less than 100 nm.

What is microemulsion cream?

Cutilite Microemulsion cream 20g Cutilite Cream is a medicine having a combination of medicines that are used to treat melasma. It helps in quick skin renewal. Hydroquinone is a skin lightening medicine. It reduces the amount of skin pigment (melanin) that causes the darkening of the skin.

What is globule size of microemulsion?

The globule size for all NDFX-ME formulations revealed from light-scattering experiments were in the range 65.83-121.21 nm, which is generally considered to be the globule size of microemulsion (≈10-150 nm).

What is microemulsion PPT?

Is a microemulsion a solution?

A microemulsion is a thermodynamically stable fluid that differs from kinetically stable emulsions, which will separate into oil and water over time. The particle size of microemulsions ranges from about 10–300 nm. Because of this small particle size, microemulsions appear as clear or translucent solutions.

Which is the best definition of a microemulsion?

Definition of microemulsion. : an emulsion in which the dispersed phase is in the form of very small droplets usually produced and maintained with the aid of surfactants and having diameters of from 50 to 500 angstroms.

How big is the dispersed phase of a microemulsion?

Microemulsions are clear, thermodynamically stable, isotropic liquid mixtures of oil, water, and surfactant, usually in combination with a cosurfactant (Kogan and Garti, 2006). The droplet size of the dispersed phase in a microemulsion is less than 100 nm.

Is the microemulsion a stable or unstable system?

Often, it is unclear whether a microemulsion described in a publication is truly a thermodynamically stable or unstable system. In many applications, an emulsion system having two phases in which the droplet sizes are extremely small appears transparent or translucent, and it could be considered as a microemulsion.

How are microemulsions used in the oil industry?

Microemulsions have many commercially important uses: Much of the work done on these systems have been motivated by their possible use to mobilize petroleum trapped in porous sandstone for enhanced oil recovery.