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Effect of matrix features on polypropylene layered silicate nanocomposites

Authors
Journal
Polymer
0032-3861
Publisher
Elsevier
Publication Date
Volume
46
Issue
18
Identifiers
DOI: 10.1016/j.polymer.2005.05.149
Keywords
  • Melt Compounding
  • Polymer Nanocomposites
  • Polypropylene
Disciplines
  • Earth Science

Abstract

Abstract The aim of this study was to examine the effect of the polypropylene based resin on the properties of organoclay–PP nanocomposites prepared by melt compounding using a twin screw extruder. The characterization of the obtained materials was performed by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), melt flow rate (MFR) and mechanical tests. The study has shown the effect of the polymer matrix molecular weight on the possibility of producing by melt compounding nanocomposites based on PP homopolymers or heterophasic PP–PE copolymers and an organically modified montmorillonite, in presence of maleic anhydride-modified polypropylene (PP- g-MAH). An increase of mechanical properties was achieved both for homopolymers and heterophasic copolymers. However the reinforcing effect of clay dispersed in heterophasic copolymers was not as high as found for the homopolymers.

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