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Vulcanization is a chemical process (invented by Charles Goodyear in 1839, patented in 1844), which combined with heat and sulphur, causes polymeric molecules form atomic "bridges" of sulphur or carbon-carbon bonds with other molecules. The once loose, polymer chains are now constrained in mobility due to the chemical cross-linking between polymer chains. This cross-linking is what gives polymers their distinctive properties.

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14y ago

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