20033-77-6Relevant academic research and scientific papers
Nitroxyl radicals of the imidazoline series as agents of pseudoliving polymerization of styrene
Kolyakina,Lazarev,Pavlovskaya,Kirilyuk,Zhurko,Grigorev,Grishin
experimental part, p. 1556 - 1564 (2011/05/04)
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-diazaspiro[4.5]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.
