Question

if rubber is mixed with sulphur in less proportion (vulcanisation process)

Answer 1

→ Vulcanization ( also spelled as vulcaniaation ) is a process or more specifically a chemical process in which polymers are converted into a form which more durable than their initial form.

→ It is performed by creating crosslinks.

→ If we form cross links between each polymer chain, it also affects the mechanical properties of that particular element over which the vulcanization process is done.

→ It is quite often that we use the term " vulcanized fibre " by which we actually refer to a kind of cellulose that is in fact treated by a zinc chloride ( $\bold{ZnCl_2}$ ) solution so that the cellulose fibres are crosslinked.

→ The vulcanization process in which sulphur is used to increase durability of rubber, is known as sulphur vulcanization( also spelled as sulphur vulcanisation ).

→ Sulphur volcanization is generally defined as the chemical process which involves conversion of the rubber formed naturally into a somewhat more durable matter by heating it with sulphur.

Answer 2

Vulcanization or vulcanisation is a chemical process which is used for converting natural rubber or related polymers into more durable materials using the addition of sulfur or other equivalent curatives or accelerators. These additives modify the polymer by forming cross-links or bidge structure between the individual polymer chains. Vulcanized materials are less sticky and have superior mechanical properties than the actual. The term vulcanized fibre is used to refers to cellulose that has been treated in a zinc chloride solution to cross-link the cellulose fibers.