Nitroxyl radicals of the imidazoline series as agents of pseudoliving polymerization of styrene |
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| Authors: | E V Kolyakina M A Lazarev M V Pavlovskaya I A Kirilyuk I F Zhurko I A Grigoŕev D F Grishin |
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| Institution: | 1.Scientific Research Institute of Chemistry,N. I. Lobachevsky Nizhnii Novgorod State University,Nizhnii Novgorod,Russian Federation;2.N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry,Siberian Branch of the Russian Academy of Sciences,Novosibirsk,Russian Federation |
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| Abstract: | Radical polymerization of styrene in the presence of 2,2,4,5,5-pentamethyl-2,5-dihydro- Imidazol-1-oxyl, 2,2-diethyl-4,5,5-trimethyl-2,5-dihydroimidazol-1-oxyl,
2,2,5,5-tetramethyl- 4-phenyl-2,5-dihydroimidazol-1-oxyl, 2,2,5-trimethyl-4,5-diphenyl-2,5-dihydroimidazol- 1-oxyl, and 2-methyl-2,3-diphenyl-1,4-diazaspiro4.5]deca-3-en-1-oxyl
was studied. Effect of substituents in the nitroxyl radical and the nature of initiator on the features of “pseudoliving”
polymerization and the molecular-weight characteristics of polystyrene synthesized were considered. Nitroxyl radicals of imidazoline
series, like TEMPO and its derivatives, allow one to regulate polymerization of styrene and obtain polymers with relatively
low values of polydispersity index. |
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