Emulsions
Emulsions
Emulsions (pronunciation: /ɪˈmʌlʃən/) are a type of mixture that consists of two or more liquids that are normally immiscible (unmixable or unblendable).
Etymology
The term "emulsion" comes from the Latin word "emulgere," which means "to milk out," as milk is an example of an emulsion of fat and water.
Types of Emulsions
There are two main types of emulsions: oil-in-water (O/W) and water-in-oil (W/O). In an oil-in-water emulsion, tiny droplets of oil are dispersed in a continuous phase of water. In a water-in-oil emulsion, it is the water that is dispersed in the oil.
Stability of Emulsions
The stability of an emulsion is determined by the surfactant used, which reduces the surface tension between the two liquids and allows them to mix.
Uses of Emulsions
Emulsions are used in a variety of industries, including food and beverage, cosmetics, pharmaceuticals, and paints and coatings. They are also used in medical procedures such as parenteral nutrition and drug delivery systems.
Related Terms
- Surfactant
- Oil-in-water
- Water-in-oil
- Mixture
- Liquid
- Surface tension
- Parenteral nutrition
- Drug delivery systems
External links
- Medical encyclopedia article on Emulsions
- Wikipedia's article - Emulsions
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