This document discusses ionic polymerization reactions, including cationic and anionic polymerization kinetics. It addresses the initiation processes, rate of propagation, and how termination differs from free radical polymerization reactions. The kinetics of cationic polymerization are specially considered, as the steady state hypothesis does not always apply. Kinetics of anionic polymerization resemble cationic but reach steady state more rapidly. The influence of dielectric constant on reaction rate is also covered.