Synthesis of star-shaped polystyrenes via nitroxide-mediated stable free radical polymerization

Anthony J. Pasquale, Timothy E. Long

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

High-molecular weight star-shaped polystyrenes were prepared via the coupling 2,2,6,6-tetramethyl-1-piperidinylyloxyl (TEMPO) with divinylbenzene (DVB) in xylenes at 138 °C. The optimum coupling reaction conditions were determined, including the optimum ratio of the coupling solvent to DVB. Linear polystyrene oligomers were prepared in bulk styrene using benzoyl peroxide in the presence of TEMPO at approximately 130 °C under an inert atmosphere. The stability of the TEMPO-terminated oligomers was also investigated at coupling reaction conditions in the absence of DVB. The intrinsic viscosity measurements in NMP/0.02 P2O5 at 60 °C supported the formation of a star-shaped architecture.

Original languageEnglish (US)
Pages (from-to)944-945
Number of pages2
JournalAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Volume41
Issue number1
StatePublished - Mar 2000
Externally publishedYes
EventThe San Francisco Meeting - San Francisco, CA, USA
Duration: Mar 26 2000Mar 31 2000

ASJC Scopus subject areas

  • Polymers and Plastics

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