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प्रश्न
What is the role of Sulphur in the vulcanization of rubber?
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उत्तर
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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संबंधित प्रश्न
What is the role of sulphur in the vulcanisation of rubber?
How does the presence of double bonds in rubber molecules influence their structure and reactivity?
Identify the monomer in the following polymeric structures.
Write the formulae of the raw materials used for preparation of Buna-S
Complete the following statement by selecting the correct alternative from the choices given:
Natural rubber is a : _________
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 |
Which one of the following monomers gives the polymer neoprene on polymerization?
Ebonite is:-
In vulcanization of rubber:
