Page 30 - Science Class 08
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v In mainly electrical connectors Polyester is an important man-made synthe c
v In cable wires and film packaging fibre which is used to make fabric and other
items. It has an excellent property of resis ng
v In making gears, slides and bearings
wrinkle and springing back into its crisp,
Proper es of Nylon smooth shape. Its so ness make it resistant for
v Excellent heat resistence stretching and shrinkage. It is also very strong.
v Excellent chemical resistance It has very low water reten on capacity. That is
v Light weight and very strong why it is easily washable. It also requires mini-
mum care. Polyester is polymer, which is
v Smooth, stretchable and durable
produced from coal, air, water and petroleum
v Very low water reten on capacity
products.
v Excellent wear resistance
Polyester can be blended with other fabrics.
v Fair to easy processing
Terylene, dacron and terens are examples of
Uses of Nylon polyester fibres. Terylene is o en mixed with
v Garments such as sarees are made from natural fibres to make clothes. When it is mixed
nylon. Since it is wear-resistant, garments with co on it is called terycot and when mixed
made from it last for a long me. with wool it is called terywool. When it is
blended with other fibres, it becomes more
v Being very strong, nylon fibre is used to
comfortable to wear.
make ropes (including ropes used during
rock-climbing), tents, fishing nets and Characteris cs of Polyester
parachutes. v Polyester fabrics and fibers are extremely
v It has good elas city and is, therefore, strong.
useful for making socks and stockings. v Polyester is very durable: resistant to most
chemicals, stretching and shrinking, wrinkle
v Nylon is also used to make toothbrushes,
combs, zip fasteners and machine parts. resistant, mildew and abrasion resistant.
v Polyester is hydrophobic in nature and
POLYESTER
quick drying. It can be used for insula on
Polyester is manufactured from petroleum.
by manufacturing hollow fibers.
Polyester (poly+ester) is made by repea ng
v Polyester retains its shape and hence is good
units of a chemical called an ester. It has
for making outdoor clothing for harsh
proper es similar to those of nylon. It is very
climates.
strong, crease–resistant, light, elas c and
absorbs very li le water. It is o en mixed with v It is easily washed and dried.
natural fibres to make clothes. With co on, it Uses of Polyester
makes polycot and with wool it forms Because of many desirable quali es, polyester
polywool. Clothes made of these mixed fibres has many uses:
are more comfortable to wear than those
v Polyester is used to make pants, shirts,
made of pure polyester.
suits and bedsheets either by itself or as a
Terylene, terene and dacron are different types blend.
of polyester fibres.
30 Science-8
