Synthesis of Poly(propylene)/Graphite Nanocomposites by in Situ Polymerization

This work presents the synthesis of polypropylene/graphite nanocomposites by in situ polymerization using the catalytic system C₂₀H₁₆Cl₂Zr (rac-ethylenebis (indenyl)zirconium(IV)) dichloride/Methyoluminoxane (MAO). 60 nm graphite nanosheets (GNS) were obtained by means of the chemical exfoliation, t...

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Bibliographic Details
Published in:Macromolecular symposia. 2011, Vol.299-300 (1), p.48-56
Main Authors: Montagna, Larissa Stieven, Fim, Fabiana de Carvalho, Galland, Griselda Barrera, Basso, Nara Regina de Souza
Format: Article
Language:English
Subjects:
Flakes
Graphite
graphite nanosheets
in situ polymerization
Nanocomposites
Nanomaterials
Nanostructure
poly(propylene)
Polymerization
Scanning electron microscopy
Synthesis
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Summary:This work presents the synthesis of polypropylene/graphite nanocomposites by in situ polymerization using the catalytic system C₂₀H₁₆Cl₂Zr (rac-ethylenebis (indenyl)zirconium(IV)) dichloride/Methyoluminoxane (MAO). 60 nm graphite nanosheets (GNS) were obtained by means of the chemical exfoliation, thermal and ultrasound treatment. GNS previously treated with MAO were added into the reactor at percentages of 0.3, 1.0 and 2.2% (w/w) in relation to nanocomposite yields. The morphology of graphite nanosheets and nanocomposites was studied by Scanning Electron Microscopy (SEM). Moreover, the structural properties of natural graphite flake (NGF), graphite nanosheets (GNS) and nanocomposites were observed through the X-Ray diffraction (XRD) analysis and by Transmission Electron Microscopy (TEM).
ISSN:1022-1360
1521-3900
1521-3900
DOI:10.1002/masy.200900133