On the Initial Stage of the Free-Radical Polymerizations of
Styrene and Methyl Methacrylate in the Presence of Fullerene C₆₀

R. Kh. Yumagulova*, S. I. Kuznetsov, D. R. Diniakhmetova, A. K. Frizen,
V. A. Kraikin, and S. V. Kolesov

Ufa Institute of Chemistry, Russian Academy of Sciences, Ufa, 450054 Bashkortostan, Russia

*e-mail: jmagulova@anrb.ru

Received October 21, 2015

Abstract—It has been demonstrated experimentally and theoretically that the essentially different inhibiting
effects of fullerene C₆₀ on the initial stage of the polymerizations of styrene and methyl methacrylate (including
complete hampering of styrene polymerization throughout a long induction period) are of common kinetic
nature. The difference arises from the competition between C₆₀ and the monomer not for initiating radicals but
for radicals originating from the monomer; that is, the difference stems from the competition between the chain
propagation reactions and the termination reactions on fullerene molecules. As a consequence, the further
development of the process is determined by the relative reactivities of the radicals toward C₆₀ and towards their
parent monomers.

Keywords: free-radical polymerization, styrene, methyl methacrylate, fullerene C₆₀, initiator, kinetics

DOI: 10.1134/S0023158416030150

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