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Question
What is the role of Sulphur in the vulcanization of rubber?
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Solution
Sulfur is used in vulcanization to produce cross-links between two polymer chains to produce more tensile strength, elasticity, and resistance to abrasion.
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RELATED QUESTIONS
Identify the monomer in the following polymeric structures.
Write names and chemical formulae of monomers used in preparing Buna-N.
Write the formulae of the raw materials used for preparation of Buna-S
Vulcanisation makes rubber:
(i) more elastic
(ii) soluble in inorganic solvent
(iii) crystalline
(iv) more stiff
Match materials given in Column I with the polymers given in Column II.
| Column I | Column II |
| (i) Natural rubber latex | (a) Nylon |
| (ii) Wood laminates | (b) Neoprene |
| (iii) Ropes and fibres | (c) Dacron |
| (iv) Polyester fabric | (d) Melamine formaldehyde resins |
| (v) Synthetic rubber | (e) Urea-formaldehyde resins |
| (vi) Unbreakable crockery | (f) cis-polyisoprene |
Ebonite is:-
Which of the following is correct regarding the drawbacks of raw rubber.
Which of the following statement is CORRECT regarding the drawbacks of raw rubber?
In vulcanization of rubber:
Which amongst the following molecules on polymerization produces neoprene?
