Vulcanization
A) leads to cross-linking of poly-cis-isoprene chains in rubber with sulfur.
B) provides considerable elasticity in rubber.
C) severs the carbon-carbon chain in rubber.
D) provides a smooth surface to rubber.
E) leads to cross-linking of poly-cis-isoprene chains in rubber with sulfur and provides considerable elasticity in rubber.

Question

Quizplus · Accepted Answer

Vulcanization is a process of treating natural rubber or related polymers with sulfur or other additives to improve its mechanical properties. During this process, poly-cis-isoprene chains in rubber are cross-linked with sulfur, which results in more stable chemical bonds and reduces its sensitivity to temperature and aging. This cross-linking provides considerable elasticity to rubber, making it useful in various industrial applications. Therefore, option E, which states both cross-linking of poly-cis-isoprene chains and elasticity in rubber, is the correct choice.