Thermoplastic and thermosetting polyners.
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Thermoplastic -
》These are the polymers which softens on heating and hardens on cooling.
》These polymers can be reused.
》Linear branched long chain molecules are seen in this type of polymers.
》The force of attraction of thermoplastic polymer is intermediate between elastomers and fibres.
●Examples - Poythene, polystyrene, polyvinyls, etc.
Thermosetting Polymers-
》These polymers on heating becomes infusible due to extensive cross linking.
》These polymers cannot be reused.
》Cross linked and heavy branched molecules are seen in this type if polymers.
》Examples : Bakelite, Urea-formaldehyde resins, etc.
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