Bakelite

In-depth explanation of Bakelite

Bakelite is a phenol-formaldehyde thermoset, first made by Leo Baekeland in 1907 and often called the first fully synthetic plastic. Phenol and formaldehyde condense to form methylene-bridged networks that become heavily crosslinked when heated under pressure. The resulting rigid, heat-resistant material is an excellent electrical insulator and can be moulded into complex shapes before curing. Because the network cannot be softened, it is used for electrical fittings, switches, telephone parts and handles. Bakelite darkens with age but remains a durable material.

Going deeper: Bakelite

Key ideas: First fully synthetic plastic (Baekeland, 1907), formed from phenol and methanal (formaldehyde) by condensation, with acid or base catalysts, releasing water. Heating builds a 3D crosslinked network, which is a thermoset. It is hard, heat resistant and electrically insulating. Used in handles, switches and old radios.

Common mistakes and connections: Students think it can be melted and reshaped like other plastics; once set, it chars. It is a network polymer, not linear. Related resin: urea-formaldehyde and melamine. Formaldehyde release is a health concern. Links to thermosets, phenol chemistry and condensation polymerization.

Visualization of Bakelite

Formaldehyde reacts with phenol to build the methylene-bridged crosslinked network of Bakelite, the first fully synthetic plastic. The interactive lesson shows this as a live animation or chart.

Worked example and use case

Early radio casings and telephone handsets were moulded from Bakelite.

Where Bakelite fits in Biochemistry, Environment & Industry

Bakelite is topic 60 of 127 in Biochemistry, Environment & Industry.

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