Question

Formation of nylons and polyesters are called step growth polymerization because:

• A. the polymers are formed by adding a monomer step by step
• B. the polymers are formed by condensation and monomers are joined by loss of simple molecules like water
• C. the monomers used for condensation are unsaturated molecules
• D. the polymers are formed by addition of a large number of free radicals formed by monomers

Answer 1

Answer: (B)

the polymers are formed by condensation and monomers are joined by loss of simple molecules like water

These polycondensation reactions result in the loss of some simple molecules as water, alcohol, etc., and lead to the formation of high molecular mass condensation polymers.

let's look at the formation of nylon polymer

Nylon 6,6- It is prepared by the condensation polymerisation of hexamethylenediamine with adipic acid under high pressure and at high temperature with the removal of water molecules.

the correct option is [B].