Having a wide variety of applications in different
industries, Surfactants are a kind of chemical substances. In many products
that we use daily, they are very essential components.
Substances that mainly lower the surface tension of a liquid
they can be defined as. Allowing it to
resist to external forces this is a property that the surface of liquids
possesses. A paper clip to float on water, without sinking, for example,
Surface tension allows some insects to run on the surface of the water.
Sorbitan monooleate has many applications.
In the same way between two liquids, for example, oil and
water, surfactants also reduce the interfacial tension. It has found many
applications in different products like wetting agents, detergents,
dispersants, emulsifiers, and foaming agents as these are very crucial
properties.
Containing both hydrophilic groups (groups that tend to dissolve
in water are attracted by water) and hydrophobic (groups that do not like
water, or are repelled by water) surfactants are usually organic compounds in
general.
While the hydrophilic part is known as the head of the
molecule the hydrophobic part is also known as the tail. Forming different
structures in water such as micelles, their hydrophobic groups tend to
aggregate while their hydrophilic groups dissolve when they are placed in
water. Sorbitan oleate is preferred for industrial use.
Surfactants are emulsifiers. Capable of dispersing one
liquid into another immiscible liquid, for example, water into oil, Emulsifiers
are substances. When you try to mix water and oil, they never mixed.
Take as an example when you are washing your dishes what
happens; you are able to mix the oil with water only after you place a product
containing an emulsifier like soap thus removing from your dishes the residual
oily products.
Since the micelles are soluble in water the oily substance
like polypropylene glycol, which is hydrophobic gets trapped into the micelles
core as the tail of the surfactant and the oily substance can be removed.
Mainly to reduce the irritation that other purely ionic
surfactants can cause Cocamidopropyl betaine is used in many cosmetics, soaps,
and shampoos as this is an amphoteric molecule. Making it use suitable for a
range of personal sanitary products it is also an antiseptic.
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