Combined nitroxide mediated radical polymerization techniques for block copolymer synthesis
Résumé
Nitroxide mediated radical polymerization (NMP) is one of the most powerful method for advanced polymer synthesis. However, NMP suffers from some limitations, in particular to mediate the polymerization of unconjugated monomers or to conduct the polymerization of conjugated monomers under low temperatures. The combination of NMP with other reversible-deactivation radical polymerization techniques, such as reversible addition fragmentation chain transfer (RAFT), atom transfer radical polymerization (ATRP) or organometallic mediated radical polymerization (OMRP), offered new possibilities in macromolecular engineering. In this contribution we report different strategies of 'combined NMP', i.e., the exchange of the polymer chain-end controlling agents for sequenced polymerization or the introduction of different polymerization-initiating sites onto alkoxyamines or polymers. (C) 2016 Elsevier Ltd. All rights reserved.
Mots clés
Alkoxyamine
atom-transfer
Combined polymerization
hydrogen-transfer reaction
labile end-groups
methyl-methacrylate
mixed homopolymer brushes
n-butyl acrylate
Nitroxide mediated polymerization
Polymer synthesis
poly(methyl methacrylate)/polystyrene brushes
poly(tert-butyl acrylate)/polystyrene brushes
Reversible-deactivation radical polymerization
ring-opening polymerization
silica nanoparticles