Classification of polymers based on physical state/ ultimate form & uses:
(1) Plastics
(2) Elastomers
(3) Fibres
(4) Liquid resins
(1) Plastics:
There are the polymers which can be shaped into hard & tough utility articles by the application of heat & pressure.
Example: Poly-styrene, PVC, Poly-methyl-metha-acrylate.
(2) Elastomers:
These are the polymers which have rubber like elastic propertie. It has elasticity.
Example: natural rubber, synthetic rubber, silicon rubber, etc.
(3) Fibres:
The polymers could be drawn into long filament like materials whose length is at least 100 fibres its diameter.
Example: Nylons terylene etc.
(4) Liquid resins:
Polymers used as adhesives, polting compound, sealants, etc in a liquid form are derived as liquid resin.
Example: Epoxy-adhesive, poly-sulphide, sealants, etc.