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The adsorption of oligomeric peroxide of sebacic acid and benzoyl peroxide on aerosils and magnesium oxide is studied. The parameters of the adsorption processes are determined. It is shown that the adsorption occurs via formation of hydrogen bonds between surface OH-groups of adsorbents and peroxide groups. The adsorption of benzoyl peroxide on the surface of aerosils and magnesium oxide is low. The thermal decomposition of oligomeric peroxide of sebacic acid and benzoyl peroxide in the presence of aerosil is investigated. The thermal decomposition of oligomeric peroxide of sebacic acid in the presence of aerosils is faster than in a homogeneous system. The corresponding activation energy increases as the aerosil content in the system decreases. In contrast to oligomeric peroxide of sebacic acid, aerosils has no effect on the thermal decomposition rate of the benzoyl peroxide. The polymerization of styrene in the presence of aerosil leads to the formation of a mineral-polymer composite. An increase in aerosil content in the polymerization system leads to a decrease in the rate of polymerization of styrene. [ABSTRACT FROM AUTHOR]

The kinetics of thermal decomposition of didecanoyl diperoxyadipate in different organic solvents have been studied. The primary homolytic dissociation of the peroxide bond (O-O) is accompanied by secondary induced chain decomposition processes. The reaction medium affects both the rate of primary homolytic decomposition and secondary decomposition processes. Correlation equations have been proposed for the rate constants of the reactions under study and physicochemical parameters of the solvents. [ABSTRACT FROM AUTHOR]

Influence of lead oxides on styrene polymerization, induced with benzoyl peroxide (BP) and tert-butyl hidroperoxide of (TBHP) was studied. It was shown, the lead oxide surface takes part in the initiation polymerization reaction of styrene if TBHP is used as initiator , but BP causes polymerization mainly in solution. Energies of activating of styrene polymerization, which was initiated with TBHP, reduces with growing of lead oxide contain in the system. Molecular weigh studying degrees of molecular grafting to the mineral surface and polydispersity of polystyrene testifies about the participation of addector in the reaction of initiation and termination. [ABSTRACT FROM AUTHOR]