Question

Sulphur is used in the vulcanization of rubber- Give reason

Answer 1

Vulcanization or vulcanisation is a chemical process for converting natural rubber or related polymers into more durable materials by the addition of sulphur or other equivalent curatives or accelerators. These additives modify the polymer by forming cross-links (bridges) between individual polymer chains.

HOPE IT HELPED

PLEASE MARK IT AS THE BRAINLIEST ANSWER

Answer 2

Answer:

Sulphur is the first chemical discovered by Charles Goodyear to vulcanize Natural rubber compounds.

Till late 1950, only sulphur was used to vulcanize rubber compounds.

Its not true that only sulphur can be used for vulcanisation

Actually, sulphur can only vulcanise unsaturated rubbers (polymer chain containing double bonds) like Natural rubber, Styrene Butadiene rubber, Nitrile Butadiene rubber, etc.

While certain organic peroxide, Phenolic resin in general can vulcanise all the rubbers ( saturated and unsaturated).

There are also other specific curatives(vulcanising agents) like ZnO/MgO which is used to vulcanise Chloroprene rubber, Epichlorohydrin rubber.

Most of the rubber compounds in day to day activities contains Natural rubber, Styrene Butadiene rubber, Butyl rubber. So sulphur is very common and mostly known to every body.

Dynamic properties are very good for sulphur vulcanised compounds when compared to other curatives like peroxide or resin cure. This is the reason why sulphur vulcanisation is used in all dynamic products like tyres, transmission belts, etc.

Though there are other vulcanising agents (curatives), sulphur dominates the market mainly because of its reliability, flexibility and controllability of vulcanisation apart from its excellent dynamic properties.

Sulphur alone cannot be used for vulcanisation. It requires accelerators and activators. Accelerators are the organic chemical compound which can accelerate or slow down the vulcanisation process. Generally, addition of accelerators accelerates the vulcanisation. Activators (ZnO/Stearic acid) is also very important for Vulcanisation process.

If you ask me why only sulphur and not phosphorus or other inorganic compounds can be used for vulcanisation, then this is one question really nobody knows the answer. Though there are lot of speculation or probable mechanism, but still true reason is not clearly understood.

In case, you want to know more about what/why/how's of vulcanisation. Feel free read below.

Let's get to basics first. Let me be as simple as i can.

Let's me introduce you this first -

Rubber is made up of 1000s of polymer chains entangled together.

Just to visualise - its like a noodles in a bowl.

Explanation:

thanks for question

pls make braintiest