Homo- and Copolymerizations of (Meth)Acrylates with Olefins (Styrene, Ethylene) Using Neutral Nickel Complexes: A Dual Radical/Catalytic Pathway
GRAU, Etienne
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 2 LCPO : Biopolymers & Bio-sourced Polymers
Voir plus >
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 2 LCPO : Biopolymers & Bio-sourced Polymers
GRAU, Etienne
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 2 LCPO : Biopolymers & Bio-sourced Polymers
< Réduire
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 2 LCPO : Biopolymers & Bio-sourced Polymers
Langue
en
Article de revue
Ce document a été publié dans
Macromolecules. 2011, vol. 44, n° 9, p. 3293-3301
American Chemical Society
Résumé en anglais
Nickel complexes [(X,O)NiR(PPh(3))] (X = N or P), designed for the polymerization of ethylene, were found to be efficient for the homo- and copolymerization of butylacrylate (BuA), methylmethacrylate (MMA), and styrene. ...Lire la suite >
Nickel complexes [(X,O)NiR(PPh(3))] (X = N or P), designed for the polymerization of ethylene, were found to be efficient for the homo- and copolymerization of butylacrylate (BuA), methylmethacrylate (MMA), and styrene. Their role as a radical initiator was demonstrated from the calculation of the copolymerization reactivity ratios. It was shown that the efficiency of the radical initiation is improved by the addition of PPh3 to the nickel complexes as well as by increasing the temperature. The dual role of a nickel complex as radical initiator and catalyst was exploited to succeed in the copolymerization of ethylene with BuA and MMA. Multiblock copolymers containing sequences of both ethylene and polar monomers were thus prepared for the first time by a dual radical/catalytic mechanism.< Réduire
Mots clés en anglais
HOMOPOLYMERIZATION
ACRYLATE
PALLADIUM COMPLEXES
POLAR VINYL MONOMERS
METHYL-METHACRYLATE
POLYMERIZATION CATALYSTS
INSERTION POLYMERIZATION
NI(ACAC)(2)-METHYLALUMINOXANE CATALYST
RADICAL COPOLYMERIZATION
MECHANISTIC INSIGHTS
Origine
Importé de halUnités de recherche