2. A synthetic fibre is a chain of small
chemical units joined together.
Each small unit is called a
monomer and the large chain
formed of many such monomers is
called a polymer.
3. The part poly in the word polymer
means ‘many’ and mer means
‘unit’.
When a number of single
units(manomers) are joined
together, they form a long chain
called polymer and the process is
called polymerisation
4. Manomers can join either linearly or in
a cross-linked way giving scope to the
formation of different kinds of
polymers.
When monomers are linearly linked, it
is linear polymerisation. When cross
linked it is called cross polymerisation.
5.
6.
7. Polyester is Although there
are many polyesters, the
term "polyester" as a specific
material most commonly
refers to polyethylene
terephthalate (PET).a
polymer of many ester units.
Polyester fibers are
extremely strong, very
durable, resistant to most
chemicals and do not get
wrinkled easily.
Does not absorb water so
dries quickly.
8. ACRYLIC
This synthetic fibre is often used as a substitute
for wool. It is manufactured as a filament, then
cut into short staple lengths similar to wool
hair, and spun into yarn. Fabric made from
acrylic is warm to wear, retains its shape and is
durable.
• Its fibres are strong and have good wrinkle
resistance.
• Acrylic is resistant to moths, oils, chemicals
and deterioration on exposure to sunlight.
• Acrylic is easy to wash and dries quickly.
9. Acrylic is lightweight, soft, and warm, with a wool-like
feel. It can also be made to mimic other fibers, such as
cotton, when spun on short staple equipment. Some
acrylic is extruded in colored or pigmented form; other is
extruded in "ecru", otherwise known as "natural," "raw
white," or "undyed." Pigmented fiber has highest light-
fastness. Its fibers are very resilient compared to both
other synthetics and natural fibers. Some acrylic is used
in clothing as a less expensive alternative to
cashmere, due to the similar feeling of the materials.
Some acrylic fabrics may fuzz or pill easily. Other fibers
and fabrics are designed to minimize pilling. Acrylic
takes color well, is washable, and is generally
hypoallergenic. End-uses include
