Question

Why is Bakelite a thermosetting polymer?

Answer 1

1. Bakelite is made by condensation polymerization of phenol with formaldehyde, forming methylene linkages between units.
2. During curing, many covalent bonds form between chains, producing a rigid three‑dimensional network.
3. These cross‑links are permanent and do not break on heating, so the network cannot flow.
4. After curing, Bakelite cannot be remelted or reshaped by heat.
5. Because it becomes a hard, insoluble, heat‑resistant network that cannot be softened again, it is classified as a thermosetting polymer.