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प्रश्न
What is the role of sulphur in the vulcanisation of rubber?
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उत्तर १
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.
उत्तर २
In vulcanization, sulphur forms cross-link at the reactive sites of double bonds of natural rubber so the rubber gets stiffened.
संबंधित प्रश्न
What is natural rubber?
(A) Cis-1,4-polyisoprene
(B) Neoprene
(C) Trans-1,4-polyisoprene
(D) Butyl rubber
Discuss the main purpose of vulcanisation of rubber.
Identify the monomer in the following polymeric structures.
Write the formulae of the raw materials used for preparation of Buna-S
Write the structure of the monomer used in the following polymer:
Buna-S
Complete the following statement by selecting the correct alternative from the choices given:
Natural rubber is a : _________
Which of the following are example of synthetic rubber?
(i) Polychloroprene
(ii) Polyacrylonitrile
(iii) Buna-N
(iv) cis-polyisoprene
Identify the polymer given below:
Which of the following statement is CORRECT regarding the drawbacks of raw rubber?
In vulcanization of rubber:
