Radical-Initiated (Co)polymerization of Methacrylates in the Presence of Organometallic Iron Complexes

The effect exerted by organometallic iron complexes (ferrocene, tricarbonyl cyclooctatetraene iron, and dimer cyclopentadienyldicarbonyl iron) on the benzoyl peroxide initiated homo- and copolymerization of methyl methacrylate and n -butyl methacrylate was studied. The ligand surrounding in the orga...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2019-09, Vol.92 (9), p.1223-1231
Main Authors: Galimullin, R. R., Sigaeva, N. N., Glukhov, E. A., Spirikhin, L. V., Kolesov, S. V.
Format: Article
Language:English
Subjects:
Benzoyl peroxide
Chemical industry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Composition
Coordination compounds
Copolymerization
Copolymers
Dimers
Free radical polymerization
Free radicals
Industrial Chemistry/Chemical Engineering
Iron
Macromolecular Compounds and Polymeric Materials
Macromolecules
Metallocenes
Polymerization
Polymethyl methacrylate
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Summary:The effect exerted by organometallic iron complexes (ferrocene, tricarbonyl cyclooctatetraene iron, and dimer cyclopentadienyldicarbonyl iron) on the benzoyl peroxide initiated homo- and copolymerization of methyl methacrylate and n -butyl methacrylate was studied. The ligand surrounding in the organometallic complexes influences the shape of the kinetic curves of the methyl methacrylate and n -butyl methacrylate polymerization. In the presence of organometallic iron complexes, the copolymerization constants are close to unity. That is, the azeotropic copolymerization occurs, with the copolymer composition equal to the composition of the monomer mixture and with the random distribution of monomeric units in the copolymer chain. On the other hand, the presence of metallocenes influences the microstructure and molecular-mass characteristics of the copolymers. These changes are due to the formation of macromolecules with the participation of both free radicals and coordinatio n- active polymerization sites formed in the presence of organometallic complexes.
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427219090064