MANGANIC HYDROXIDE-HYDRAZINE HYDRATE SYSTEM AS AN INITIATOR OF VINYL POLYMERIZATION

The reaction of hydrazine hydrate with manganic hydroxide and its application to the solution polymerization of methyl methacrylate has been studied. The kinetic evidence suggests that the hydrazine and the monomer are both adsorbed on the surface of the manganic hydroxide sol and that the decomposition of the hydrazine and the polymerization of the methyl methacrylate follow zero‐order kinetics. The rate of polymerization increases slowly with increasing temperature, the activation energy for the polymerization being 4.9 ± 0.2 kcal/mole. Copyright © 1969 John Wiley & Sons, Inc.