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15.15 Discuss the main purpose of vulcanisation of rubber.
Answers (1)
The natural rubber has many flaws in following ways like-
- it becomes soft at high temperature and brittle at low temperature (<283K). And
- show very high water absorption capacity
- soluble in a non-polar solvent and
- poor resistant to the attack of oxidising agents.
To improve all these physical properties we do vulcanisation of rubber. During this process, sulphur cross-links are formed, which makes it hard, tough with high tensile strength.
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