What are thermoplastics and thermosetting plastics? Give one example o – InterviewSolution

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1.	What are thermoplastics and thermosetting plastics? Give one example of each kind.
Answer» Thermoplastics are linear polymers which can be repeatedly softened on heating and hardened on cooling and hence can be used again and again without any change in chemical composition e.g., polythene, polypropene etc. Thermosetting polymers, on the other hands, are permanently setting polymers. On heating in a mould, they get hardened and set and cannot be softened again. This is due to cross-linking between different polymer chains to give a three-dimensional network solid e.g., bakelite, melamine-formaldehyde polymer etc.

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