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Synthetic Fibres and Plastics, Properties of Plastics, Properties of…
Synthetic Fibres and Plastics
PLASTICS
Types of plastics
Thermoplastics: In thermoplastics, the process of softening by heating and hardening on cooling can be repeated again and again to soften the plastic to get different shapes
Thermosetting plastics: Thermosetting plastics can be softened by heating once. e.g. Bakelite and melamine
FIBRES
Types of fibres
Natural Fibres: Natural fibers or are fibers that are produced by plants, animals, and geological processes.
Synthetic Fibres : he substances used to produce such fibres are extracted from raw materials such as chemicals based on petroleum or petrochemicals.
SYNTHETIC FIBERS: Rayon, nylon, polyester and acrylic.
Synthetic Fibres are made up of molecules called monomers
POLYMERS are huge molecules- usually consisting of long chains made from thousands of similar small molecules called monomers
The process by which monomers are linked together to form polymers is called polymerization.
Properties of Plastics
Properties of Synthetic Fibers
Strong
Crease-Resistant
elastic
last for a long time
easy to wash
mothproof
uncomfortable
stick to our body
inexpensive
light weighted
durable
non-biodegradable
waterproof insoluble in water
If eaten by animals, it can kill them