Single Choice

In vulcanisation of rubber,

Asulphur reacts to form new compound
Bsulphur cross links are introduced
Correct Answer
Csulphur forms a very thin protective layer over rubber
DAll of the above.

Solution

In vulcanisation of rubber, sulphur cross links are introduced. Natural rubber is mixed with 3 to 5% sulphur and heated at $$100- 150^oC$$ to form cross linking of cis-1,4 polyisoprene chains through disulphide bonds (-S-S-) . Vulcanization of rubber makes it more strong, tough and elastic.

SIMILAR QUESTIONS

Polymers

The process involving heating of rubber with sulphur is called ___

Polymers

The tensile strength, elasticity and resistance to abrasion can be increased by a process called ___

Polymers

The process of vulcanization was introduced by ____

Polymers

Heating rubber with sulphur is known as:

Polymers

The process of vulcanisation makes rubber:

Polymers

Illustrate the following terms : (a) Copolymerization (b) Vulcanization

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