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2007-04-19 - Article/Dans un journal avec peer-review - Anglais - 7 page(s)

Ring J., Thomman R., Mulhault R., Raquez Jean Marie , Degée Philippe, Dubois Philippe , "Controlled synthesis and characterization of poly(ethylene-b-L,L-lactide) block copolymers by combining catalytic ethylene oligomerization with “coordination-insertion” ring-opening polymerization of L,L-lactide" in Macromolecular Chemistry and Physics, 208, 8, 896-902

  • Edition : Wiley-VCH, Weinheim (Germany)
  • Codes CREF : Chimie macromoléculaire (DI1315), Catalyses hétérogène et homogène (DI1334)
  • Unités de recherche UMONS : Matériaux Polymères et Composites (S816)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) Model poly[ethylene-block-(L,L-lactide)] (PE-block-PLA) block copolymers were successfully synthesized by combining metallocene catalyzed ethylene oligomerization with ring-opening polymerization (ROP) of L,L-lactide (LA). Hydroxy-terminated polyethylene (PE-OH) macroinitiator was prepared by means of ethylene oligomerization on rac-dimethyl-silylen-bis(2-methyl-benz[e]indenyl)-zirconium(IV)-dichloride/methylaluminoxane (rac-MBI/MAO) in presence of diethyl zinc as a chain transfer agent, and subsequent in situ oxidation with synthetic air. Poly[ethylene-block-(L,L-lactide)] block copolymers were obtained via ring-opening polymerization of LA initiated by PE-OH in toluene at 100?°C mediated by tin octoate. The formation of block copolymers was confirmed by 1H NMR spectroscopy, fractionation experiments, thermal behavior, and morphological characterization using AFM and light microscopy techniques.

Notes :
  • (Anglais) Publié en ligne le 24 avril 2007
  • (Anglais) Lecture en ligne: http://onlinelibrary.wiley.com/doi/10.1002/macp.200600640/pdf
Identifiants :
  • DOI : 10.1002/macp.200600640