Authors Yin, M. ; Wang, Y. ; Bauer, I. ; Habicher, W.D. ; Voit, B.
Title One-step formation of two new unimolecular initiators on the basis of styrene and HO-TEMPO
Date 27.06.2005
Number 12580
Abstract Two kinds of modified unimolecular initiators for nitroxide-mediated radical polymerization were formed in a one-step and one-pot BPO initiated reaction of styrene with 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl (HO-TEMPO) involving an additional oxidation reaction. Their ability to initiate and to control the radical polymerization of styrene was verified and the newly produced initiators did not show any differences compared to the well-known TEMPO-based initiator. <SUP>1</SUP>HNMR spectra of the resultant polymers showed the presence of the end-group in the functionalized polymers. HO-TEMPO used in a bimolecular initiator system gave similar results as the significantly more expensive TEMPO, but in general the use of unimolecular initiators gives a better control over the molecular weight of the polymers synthesized.
Publisher Designed Monomers and Polymers
Citation Designed Monomers and Polymers 8 (2005) 211-223
Tags tempo ho-tempo unimolecular initiators styrene polymerization free-radical polymerization nitroxide

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