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Supported Neodymium Catalysts for Isoprene and rac ‐β‐Butyrolactone Polymerization: Modulation of Reactivity by Controlled Grafting
Author(s) -
Terrier Michael,
Brulé Emilie,
Vitorino Marta J.,
Ajellal Noureddine,
Robert Carine,
Gauvin Régis M.,
Thomas Christophe M.
Publication year - 2011
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.201000653
Subject(s) - isoprene , methylaluminoxane , polymerization , polymer chemistry , chemistry , grafting , neodymium , selectivity , reactivity (psychology) , catalysis , copolymer , materials science , organic chemistry , polymer , metallocene , optics , medicine , laser , physics , alternative medicine , pathology
A series of hybrid materials, bearing neodymium silylamide initiating groups, have been shown to mediate isoprene polymerization when combined with alkyl aluminum activators [methylaluminoxane, AlEt 2 Cl, Al( i Bu) 3 ]. The surface species nature and relative distribution were correlated with isoprene polymerization activity and selectivity. This approach to stereocontrol modulation has been extended to racemic β ‐ butyrolactone isoselective ring opening polymerization.