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What is the Role of Sulphur in the Vulcanisation of Rubber? - CBSE (Science) Class 12 - Chemistry

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Question

What is the role of sulphur in the vulcanisation of rubber?

Solution

Rubber is made of hydrocarbon chains, basically carbon and hydrogen. These chains slide over one another and get tied to one another which leads to natural rubber being sticky. When sulphur is used in the vulcanisation process, it reacts with these chains and forms disulphide (or similar) bonds. Sulphur forms cross linkages at the reactive sites of the double bonds because of which rubber gets stiffened.

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Solution What is the Role of Sulphur in the Vulcanisation of Rubber? Concept: Types of Polymerisation Reactions - Rubber.
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