Coordination radical polymerization of methyl methacrylate, initiated by the azobis(isobutyronitrile)–tri-n-butylborane binary system


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Resumo

A procedure for coordination radical polymerization of methyl methacrylate in the bulk, initiated by the azobis(isobutyronitrile)–tri-n-butylborane binary system at 60°С, was developed. Butyl radicals participating in the initiation step were detected by EPR. These radicals are generated by complexation of cyanoisopropyl radicals with trialkylborane. The radical at the boron atom transforms from the C-centered to N-centered structure with the subsequent SR2 reaction and fast generation of n-butyl radicals. As found by NMR and confirmed by kinetic studies, the tri-n-butylborane–initiator–monomer system stimulates generation of propagating poly(methyl methacrylate) radicals.

Sobre autores

V. Dodonov

Lobachesvky National Research State University

Autor responsável pela correspondência
Email: vadodonov@gmail.com
Rússia, pr. Gagarina 23, Nizhny Novgorod, 603022

T. Starostina

Lobachesvky National Research State University

Email: vadodonov@gmail.com
Rússia, pr. Gagarina 23, Nizhny Novgorod, 603022

V. Kuropatov

Lobachesvky National Research State University; Razuvaev Institute of Organometallic Chemistry

Email: vadodonov@gmail.com
Rússia, pr. Gagarina 23, Nizhny Novgorod, 603022; ul. Tropinina 49, Nizhny Novgorod, 603137

Yu. Malysheva

Lobachesvky National Research State University

Email: vadodonov@gmail.com
Rússia, pr. Gagarina 23, Nizhny Novgorod, 603022

Yu. Kuznetsova

Lobachesvky National Research State University

Email: vadodonov@gmail.com
Rússia, pr. Gagarina 23, Nizhny Novgorod, 603022

A. Buzina

Lobachesvky National Research State University

Email: vadodonov@gmail.com
Rússia, pr. Gagarina 23, Nizhny Novgorod, 603022

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