Question

(i) What is the role of benzoyl peroxide in the polymerisation of ethene?
(ii) Identify the monomers in the following polymer :
`(-overset(H)overset(|)(N) - (CH_(2))_(6) - NH - underset(O)underset(||)(C) - (CH_(2))_(4) - overset(O)overset(||)(C) - )_(n)`
(ii) Arrange the following polymers in the increasing order of their intermolecular forces : Nylon-6, 6 Polythene, Buna -S
OR
Write the mechanism of free radical polymerisation of ethene

Answer 1

(i) It is a catalyst which helps in initiating free radical mechanism involved in polymerisation of alkenes.
(ii) `underset("Hexamethylenediamine")(NH_(2) (CH_(2))_(6) NH_(2)) " and " underset("Adipic acid")(HOOC (CH_(2))_(4) COOH)`
(iii) Buna-S `lt` Polythene `lt` Nylon6