Skip to Main content Skip to Navigation
Journal articles

In situ nitroxide-mediated polymerization of styrene promoted by the N-tert-butyl―isopropylnitrone/bpo pair: ESR investigations

Abstract : The styrene polymerization initiated by benzoyl peroxide (BPO) in the presence of N-tert-butyl―isopropylnitrone as nitroxide precursor is well-controlled provided that a prereaction between the nitrone and BPO is carried out in suitable conditions prior to polymerization at a higher temperature. Electron spin resonance (ESR) spectroscopy was implemented to probe the nitroxides formed during both steps, that is, the prereaction and polymerization, and to get crucial information regarding the structure of the nitroxides responsible for the polymerization control. ESR studies combined with first principles calculations have evidenced that nitroxides observed during the prereaction in the presence of styrene and during the polymerization steps consist of a mixture of two macronitroxides. One is formed by the addition of a growing polystyrene chain to the nitrone as would be expected. However, the second one results from the addition of a polystyrene chain to tert-butyl nitroso that is in situ formed presumably by decomposition of the first macronitroxide type. (c) 2013 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013, 51, 1786-1795
Document type :
Journal articles
Complete list of metadatas

https://hal-amu.archives-ouvertes.fr/hal-01460453
Contributor : Didier Gigmes <>
Submitted on : Tuesday, February 7, 2017 - 4:42:18 PM
Last modification on : Saturday, October 3, 2020 - 3:20:32 AM

Links full text

Identifiers

Collections

Citation

Christophe Detrembleur, Jean-Louis Clément, Valerie Sciannamea, Christine Jérôme, Jean-Marie Catala, et al.. In situ nitroxide-mediated polymerization of styrene promoted by the N-tert-butyl―isopropylnitrone/bpo pair: ESR investigations. Journal of Polymer Science Part A: Polymer Chemistry, Wiley, 2013, 51 (8), pp.1786--1795. ⟨10.1002/pola.26559⟩. ⟨hal-01460453⟩

Share

Metrics

Record views

112