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Distinguish Between Thermoplastic and Thermosetting Resins. ? - Applied Chemistry 1

Distinguish Between

Distinguish between thermoplastic and thermosetting resins. ?

Distinguish between Thermoplastic and Thermosetting plastic.

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1.Formed by addition polymerization. 1. Formed by condensation polymerization.
2. Can be moulded and remoulded. 2.Remoulding is not possible.

3. They softens on heating because the linear chains can slip over each other very easily.

3. They do not become soft on heating,because cross links retain the strength on heating. But
prolonged heating causes charring.
4. Soft, weak and less brittle. 4. Hard, strong and brittle.
5. Soluble in some organic solvents. 5.lnsoluble in almost all organic solvents.
6. Relatively low molecular weight. 6.Relatively high molecular weight.
7 Example: PVC, PE, Teflon. 7.Example: UF, PF, Nylon 6-6, etc.
Concept: Thermoplastic Plastic
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