Question

discuss the main purpose of vulcanization of rubber​

Answer 1

Explanation:

Vulcanisation is a chemical process for converting natural rubber or related polymers into more durable materials by the addition of sulphur or other equivalent curatives or accelerators. These additives modify the polymer by forming cross-links between individual polymer chains.

Answer 2

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● Vulcanization of rubber(how it's done) :

This process is carried out by heating a mixture of raw rubber with sulphur and an appropriate additive at a temperature change between 373 K to 415 K.

During this process, sulphur forms cross links at the reactive sites of double bonds and thus the rubber gets stiffened.

● Purpose of vulcanization of rubber :

Natural rubber (not vulcanized) becomes soft and brittle below 283 K and shows high water absorption capabilities.

Natural rubber is soluble in non-polar solvents and is non-resistant to attack by oxidizing agents. Therefore, in order to improve these physical properties, vulcanization of rubber is carried out.