Differentiate between Thermoplastic and Thermosetting polymers.

Differentiate between Thermoplastic and Thermosetting polymers.
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1 Answer

Answer :

Differentiate between Thermosetting and Thermoplastic polymers:

Thermosetting
Thermoplastic
Polymers which once mould /shaped do not soften when heated and thus cannot be reshaped 
Polymers whose shape can be changed on application of heat are k/as thermoplastic polymers
It can be heated and shaped once.
These are soften by heating , shaped when hot, harden when cooled, reshaped when heated again.
It can be decamped when reheated. No plasticity
These are soften for no. of times on heating without change in their properties.
e.g. epoxy resins, urea formaldehyde etc
e.g. polyethylene, polypropylene etc
They have 3 dimensional cross linked structure 
They have long chain linear structure
Produced by condensation polymerization process
Produced by addition polymerization process
High molecular weight
Low molecular weight
These are hard, more brittle and strong
These are soft, less brittle and weak
Monomer used in this polymer is tri, tetra or poly functional.
Monomer used in this polymer bi functional.
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