The Relationship between the Cure Rate of Methyl Methacrylate–Macroinitiator Adhesive Composition and the Macroinitiator Composition Obtained by Titanocene Dichloride-Involved Radical-Initiated Polymerization

By means of kinetic simulation, we established how the cure rate of an acrylic adhesive composition, poly(methyl methacrylate) macroinitiator + methyl methacrylate, was related with the composition of the macroinitiator obtained by radical-coordination polymerization in the presence of a benzoyl peroxide + titanocene dichloride catalytic system and to its synthesis conditions. The cure rate of the adhesive composition was found to increase with an increase in the content of coordination active sites in the macroinitiator, i.e., upon a temperature rise and an increase in the ratio of the initial titanocene dichloride concentration to the initial benzoyl peroxide concentration in the synthesis of macroinitiator. An increase in the cure temperature of the adhesive composition also led to an increase in the cure rate. It is shown that the macroinitiator composition and the cure rate of the adhesive composition can be controlled more precisely when the macroinitiator is obtained in the presence of the catalytic system benzoyl peroxide + titanocene dichloride, rather than benzoyl peroxide + ferrocene, since the macroinitiator composition is less susceptible to the initial concentration of titanocene dichloride compared to the initial concentration of ferrocene.