CHEMISTRY
These are man-made fibers that
are made up of a chain of small units called monomers. The monomers bond
together to form polymers, which are large single units. The word
"polymer" comes from the Greek words poly meaning many and mer
meaning part or unit.
Plastics
Plastics are also made up of
polymers, and can have either a linear or cross-linked unit arrangement.
Types of plastics
There are two types of plastics:
Thermoplastics: These plastics deform when heated and bend easily. Examples
include PVC and polyethylene.
Thermosetting plastics: These plastics cannot be softened by heating after they have been
formed. Examples include melamine and bakelite.
Examples of synthetic fibers
Some examples of synthetic
fibers include:
Rayon: The
first fully synthetic fiber, made from coal, water, and air. Rayon can be
mixed with cotton or wool to make bedsheets or carpets.
Nylon: A
strong, elastic, and light fiber that is used to make many items, including
socks, ropes, tents, and toothbrushes.
Acrylic: A less expensive alternative to wool that can be dyed in many
colors.
Uses of plastics
Plastics are used in many
applications, both indoors and outdoors. PVC is used to make toys and
chappals, while polyethylene is another example of a thermoplastic.
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