explain the differences between thermoplastics and thermosetting plastics.
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The main difference between Thermoplastics and Thermosetting plastics is that Thermoplastics can be heated and shaped over and over again - Thermosetting plastics can only be heated and shaped once.
Listed below are the differences between them:
THERMOPLASTICS | THERMOSETTING PLASTICS |
Formed by addition Polymerization. | Formed by condensation Polymerization. |
Long chain linear polymers | Three dimensional network structure joined by strong covalent bonds |
Soften on heating and stiffen on cooling | Do not soften on heating |
Can be remoulded | Cannot be remoulded |
Usually soft, weak & less brittle | Usually hard, strong & more brittle
|
Can be reclaimed from wastes | Cannot be reclaimed from wastes |
Soluble in organic solvents | Insoluble in organic solvents |