Name the monomers present in the following polymers.
PVC

Explanation

(a) (i) Vinylchloride or chloroethene
(ii) Chloropene or 2-chloro 1, 3- butadiene
(iii) Caprolactam
(b) The process of heating a mixture of natural rubber with sulphur (and a appropriate additive), to in the physical property of rubber is called Vulcanisation of rubber.
(a) (i) Monomers of PVC is vinyl chloride `(CH_(2) = CH.Cl)`.
(ii) Monomer of neoprene is chloroprene
`(CH_(2)=CH-underset(Cl)underset(|)(C)=CH_(2))`
(iii) Monomer of nylon -6 is caprolactum

(b) Vulcanisation of rubber : Natural rubber is soft and sticky. It stensile strength and elasticity is low. In order to give strength and elastisity, natural rubber is vulcanised to improve properties. The process is called vulcanisation of rubber. In this process, rubber is treated with sulphur or any suitable sulphur compound to modify its properties. The process gives cross-linkage, which provides mechanical strength and proper elasticity to the rubber.