A. What is the role of t-butyl peroxide in the polymerization of ethane?

B. Identify the monomers in the following polymer :

C. Arrange the following polymers in the increasing order of their intermolecular forces :

PVC, Nylon-6, Buna-N

OR

Write the mechanism of free radical polymerization of ethane.

A. In polymerisation of ethene, the source of free radical is needed to initiate the chain reaction. Such free radicals are usually produced by the decomposition of peroxides.

Tert- butyl peroxide is used as free radical generating initiator or simply as a catalyst during the polymerisation of ethene

B. The above polymer is known as glyptal and it is made from 2 monomers, ethylene glycol and pthalic acid.

C. There are four types of polymers based on the molecular forces and they are as follows: elastomers, fibers, thermoplastic polymer, and thermosetting polymer.

Bhuna-S is an elastomer which has a weak binding force which enable them to stretch.

PVC is thermoplastic polymer which has force intemideate of eastober and fibers

Nylon-6,6 is an example of fibers which possess high tensile strength because of strong intermolecular force

Bhuna-S < PVC < Nylon-6,6

OR