What is Vulcanization?
'''Vulcanization''' is a kind of [[chemical reaction]] between [[sulphur]], or another agent, and natural [[rubber]]. It makes cross-links between the [[molecular chains]] in the rubber. The reaction is not reversible. [[Charles Goodyear]] discovered it in 1839. The purpose of this is to harden the rubber so it does not melt or soften in warm [[Temperature|temperatures]]. This hard rubber can keep its shape when it is used where it might be warmed or cooled. [[Category:Chemical processes]] {{sci-stub}}