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2007-04-02 - Article/Dans un journal avec peer-review - Anglais - 6 page(s)

Bredeau St., Boggioni L., Tritto I., Bertini F., Monteverde F., Alexandre P., Dubois Philippe , "Ethylene-norbornene copolymerization by carbon nanotube-supported metallocene catalysis: generation of high performances polyolefinic nanocomposites" in Macromolecular Rapid Communications, 28, 7-8, 822-827

  • Edition : Wiley, 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) Homogeneous surface coating of multi-walled carbon nanotubes is achieved for the first time by in situ copolymerization of ethylene (E) and 2-norbornene (N) as catalyzed directly from the nanotube surface previously treated by a highly active metallocene-based complex, i.e., rac-Et(Ind)2ZrCl2/MMAO-3A. The copolymerization reaction allows for the destructuration of the native nanotube bundles, which upon further melt blending with an ethylene–vinyl acetate copolymer (27 wt.-% vinyl acetate) matrix, leads to high-performance polyolefinic nanocomposites. The microstructural analysis of the surface-coating copolymer was carried out by 13C NMR spectroscopy and allowed determination of the actual N content incorporated along the chains. Depending on the experimental conditions used (e.g., E pressure, solvent, feed N concentration) the relative quantity of E–N copolymer can be tuned, as well as the N content in the formed copolymers and accordingly their glass transition temperature.

Notes :
  • (Anglais) Lecture en ligne: http://onlinelibrary.wiley.com/doi/10.1002/marc.200600872/pdf
  • (Anglais) Publié en ligne le 4 avril 2007
Identifiants :
  • DOI : 10.1002/marc.200600872