title: Supported neodymium catalysts for isoprene and rac-β-butyrolactone polymerization: modulation of reactivity by controlled grafting.
abstract: 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(iBu)(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.
authors: Université Lille Nord de France ENSCL, UMR CNRS 8181, Cité Scientifique, BP 90108, 59652 Villeneuve d'Ascq, Cedex, France.
authors: Michael
authors: M
authors: Terrier
authors: Emilie
authors: E
authors: Brulé
authors: Marta J
authors: MJ
authors: Vitorino
authors: Noureddine
authors: N
authors: Ajellal
authors: Carine
authors: C
authors: Robert
authors: Régis M
authors: RM
authors: Gauvin
authors: Christophe M
authors: CM
authors: Thomas
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000737:chemistry; D000535:Aluminum / Q000737:chemistry; D002070:Butadienes / Q000737:chemistry*; D002384:Catalysis; D045782:Hemiterpenes / Q000737:chemistry*; D009354:Neodymium / Q000737:chemistry*; D010420:Pentanes / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis*; D013237:Stereoisomerism
chemical_list: D002070:Butadienes; D045782:Hemiterpenes; D010420:Pentanes; D011108:Polymers; C005059:isoprene; D009354:Neodymium; C013426:beta-butyrolactone; D000535:Aluminum; D015107:4-Butyrolactone