Question

Which of the following polymers are condensation polymers?

(a) Bakelite

(b) Teflon

(c) Buty rubber

(d) Melamine formaldehyde resin

Answer 1

Answers: (a), and (d).

Condensation polymers are formed by a repeated condensation reaction between two bifunctional or trifunctional units usually with the elimination of small molecules like water, alcohol, ammonia, $C{O}_2$, HCl.

e.g.,

(i) Bakelite is obtained by polymeristaion of phenol and formaldehyde.

(ii) Melamine- Formaldehyde-resin