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Influence of the nanotube oxidation on the rheological and electrical properties of CNT/HDPE composites

AIP Conference Proceedings, ISSN: 1551-7616, Vol: 1736
2016
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Conference Paper Description

Rheological and electrical properties of nanocomposites based on multi-walled carbon nanotubes (MWNTs) and high density polyethylene (HDPE), prepared by melt mixing in a micro-twin screw extruder, have been investigated. The effect of MWNT concentration (0.5 and 2.5 wt %) and nanotube surface treatment (oxidative treatment in a tubular furnace at 500°C for 1 hr in a 95% nitrogen, 5% oxygen atmosphere) has been analyzed. It has been found that the sample conductivity with oxidation of the nanotubes decreases more than 2 orders of magnitude. Scanning electron microscopy showed good adhesion and dispersion of nanotubes in the matrix, independently of the surface treatment. Electrical and rheological measurements revealed that the oxidative treatment, causing some reduction of the MWNT quality, decreases the efficiency of the nanotube matrix interaction.

Bibliographic Details

Maria Rossella Nobile; Elvira Somma; Olga Valentino; Heinz Christoph Neitzert; George Simon

AIP Publishing

Physics and Astronomy

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