Classification of Polymers Based on Mode of Polymerisation
( i ) Addition polymers The polymers formed by the polymerisation of monomers containing double or triple bonds ( unsaturated compounds ) are called addition polymers . Addition polymers have the same empirical formula as their monomers .
Addition polymers can further be classified on the basis of the types of monomers into the following two classes :
Homopolymers The polymers which are obtained by the polymerisation of a single type of monomer are called homopolymers .
Copolymers The polymers which are obtained by the polymerisation of two or more monomers are called copolymers
( ii ) Condensation polymers The polymers which are formed by the combination of monomers with the elimination of small molecules such as water , alcohol , hydrogen chloride etc ., are known as condensation polymers , e . g ., nylon 6,6 is formed by the condensation of hexamethylene diamine with adipic acid .
Classification of Polymers Based on Molecular Forces