Step-Reaction Polymerization (Condensation)
This type of polymerization normally employs two difunctional
monomers that are capable of undergoing typical
organic reactions. For example, a diacid can be allowed to react
with a diol in the presence of an acid catalyst to afford a
polyester. In this case, chain growth is initiated by the redction
of one of the diacid's carboxyl groups with one of the diol's
hydroxyl groups. The free carboxyl or hydroxyl group of the