Question

Which one of the following is not a condensation polymer?

Dacron
Neoprene
Melamine
Glyptal

Answer 1

Dacron It might be condensation polymer

Answer 2

Answer:

Neoprene is not condensation polymer, whereas, Dacron, melamine, and glyptal are condensation polymer.

Solution:

A condensation polymer is the polymer that is formed by the condensation reaction of smaller molecules to form large structural units along with releasing smaller by products like water, methanol, hydrogen chloride etc. This is called as step-growth polymerization where the large cross-linked polymers are formed. Condensation reactions of terephthalic acid and ethylene glycol form Dacron, glycerol with phthalic acid forms glyptal, and melamine and formaldehyde to form synthetic melamine. Neoprene is formed by the addition reaction of monomers and is a chain-growth reaction.