Premium
Fast Controlled Radical Polymerization of Styrene Mediated by Oligomeric Nitroxides Formed In Situ
Author(s) -
Sciannamea Valérie,
Catala JeanMarie,
Jerome Robert,
Detrembleur Christophe
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200600671
Subject(s) - nitroxide mediated radical polymerization , polymerization , polymer chemistry , amine gas treating , chemistry , peracetic acid , radical polymerization , styrene , molar mass , electron paramagnetic resonance , photochemistry , copolymer , organic chemistry , polymer , physics , hydrogen peroxide , nuclear magnetic resonance
In the presence of an oligomeric hindered secondary amine added with peracetic acid as the oxidant, radical polymerization of styrene is fast and controlled at 110 °C. Under these experimental conditions, an oligomeric nitroxide is formed in situ. This polymerization is 2.5 faster than polymerization mediated by the alkoxyamine derivated from TIPNO (2,2,5‐trimethyl‐4‐phenyl‐3‐azahexane‐3‐nitroxide), which generates a low molar mass nitroxide. Similarly, substitution of a low molar mass secondary amine, 2,2,6,6‐tetramethylpiperidone (4‐oxo‐TMP), for the oligomeric secondary amine maintains the control on the polymerization, which is however 4.6 times slower, all the other conditions being the same. The in situ formation of the oligomeric nitroxide has been confirmed by electron spin resonance (ESR).