Goseeko blog

What is Polymer?

by Team Goseeko


  • Polymers is a large molecule composed of repeating structural units.
  • Polymer plays an essential and important role in everyday life. Because of its extraordinary and wide range of properties.
  • Natural polymeric materials such as shellac, amber and natural rubber have been used for centuries.
  • The variety of other natural polymers like cellulose which is the main constituent of wood and paper.
  • Synthetic polymers includes synthetic rubber, nylon, PVC, neoprene, Polypropylene, polystyrene, silicone and many other.
  • Polymer is a backbone for preparation of plastics.
  • Natural and synthetic polymers belong to the recent innovative products which are now competing with metals.

Advantages of Polymer:

Some of the advantages of polymers are as follows:

  1. Firstly they have good corrosion resistance.
  2. Secondly Strength to weight ratio is high.
  3. Thirdly easily mouldable and can be mass produced.
  4. Fourthly Good chemical resistance.
  5. Lastly low coefficient of friction.

Classification of Polymer:

There are two types of polymers which are as follows:

  1. Thermoplastic polymers
  2. Thermosetting polymers

1. Thermoplastic Polymer:

  • These are polymers which soften on heating and harden when cooled.
  • One can heat and cool polymers repeatedly as long as they keeps the temperature below its decomposition point.
  • This is because they are composed of straight chain and branch chain molecules.
  • Some commercial thermoplastic polymers are Polyethylene, PVC etc.

2. Thermosetting Polymers:

  • These polymers gets soften during their first heating and become very hard on cooling i.e. they become permanently hard.
  • On further heating, they become harder rather than softening.
  • Once set, they becomes infusible and can not be remoulded.
  • For example Phenolics, Epoxies, silicones etc.

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