FEATURES OF INITIATION OF STYRENE POLYMERIZATION BY CUMENE HYDROPEROXIDE IN PRESENCE OF ACETULACETONATE OF COPPER(II)

Abstract

Kinetics of sectional styrene polymerization initiated by cumene hydroperoxide, acetylacetonate of copper(II) and by the system of cumene hydroperoxide — acetylacetonate of copper(II) in a temperature range 333-363 K is studied. Kinetic parameters of polymerization process are determined. It is shown, that system of cumene hydroperoxide — acetylacetonate of copper(II) is in 5-6 times more effective on the initiating ability comparatively to application of its individual components. From findings ensues that decline of energy of activating of initiation from 110 kdzh/mol’ to 87 kdzh/mol’ for cumene hydroperoxide at the use of the studied system is caused with participating of monomer in preliminary complexation facilitating formation of free radicals.

Keywords

• ацетилацетонат міді(ІІ), стирол, гідропероксид кумола