Polymerization of hex-1-ene initiated by diimine complexes of nickel and palladium
DEFFIEUX, Alain
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
CRAMAIL, Henri
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
European Polymer Journal. 2005, vol. 41, n° 29, p. 303-312
Elsevier
Résumé en anglais
The effect of monomer concentration, reaction temperature and initiator structure on the activity, molar mass, branching and thermal properties of poly(hex-1-ene)s was investigated for the polymerization of hex-1-ene ...Lire la suite >
The effect of monomer concentration, reaction temperature and initiator structure on the activity, molar mass, branching and thermal properties of poly(hex-1-ene)s was investigated for the polymerization of hex-1-ene initiated by four alpha-diimine complexes of nickel and palladium. Hex-1-ene polymerization exhibits an apparent negative kinetic order with respect to monomer concentration. Polymerization of hex-1-ene initiated by MAO activated 1,4-bis(2, 6-diisopropylphenyl)acenaphtenediiminenickel(II) dibromide (1a/MAO) proceeds in living-like fashion not only at sub-zero temperatures but even at 20degreesC. However, molar masses of the polymers are higher than predicted values in agreement with an initiator efficiency lower than one.< Réduire
Mots clés en anglais
polyolefins
kinetics (polym.)
structure
nickel catalyst
living polymerization
Origine
Importé de halUnités de recherche