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

Anthony J. Pasquale, Timothy Edward Long

Research output: Contribution to journalConference article

3 Citations (Scopus)

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
Pages (from-to)944-945
Number of pages2
JournalAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Volume41
Issue number1
Publication statusPublished - 2000 Mar 1
Externally publishedYes
EventThe San Francisco Meeting - San Francisco, CA, USA
Duration: 2000 Mar 262000 Mar 31

Fingerprint

divinyl benzene
Polystyrenes
Free radical polymerization
Oligomers
Stars
phosphorus pentoxide
Benzoyl peroxide
Viscosity measurement
Xylene
Benzoyl Peroxide
Styrene
Xylenes
Molecular weight

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Synthesis of star-shaped polystyrenes via nitroxide-mediated stable free radical polymerization. / Pasquale, Anthony J.; Long, Timothy Edward.

In: American Chemical Society, Polymer Preprints, Division of Polymer Chemistry, Vol. 41, No. 1, 01.03.2000, p. 944-945.

Research output: Contribution to journalConference article

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