Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/46080
Title: Effect of filler morphology on the electrical and thermal conductivity of pp/carbon-based nanocomposites
Authors: Zaccone, Marta
Frache, Alberto
Torre, Luigi
Armentano, Ilaria 
Monti, Marco
Journal: JOURNAL OF COMPOSITES SCIENCE 
Issue Date: 2021
Abstract: 
In this paper, we studied the effect of different carbon-based nanostructures on the electrical and mechanical properties of polypropylene (PP) nanocomposites. Multi-walled carbon nanotubes (MWCNT), expanded graphite (EG), and two different carbon black nanoparticles (CB) have been dispersed at several weight contents in the polymer matrix through a melt extrusion process. The produced nanocomposites have been used to obtain samples for the characterization by injection molding. The dispersion of the nanoparticles in the matrix has been evaluated by scanning electron microscopy (SEM) analysis. The electrical characterization has been performed both in DC and in AC configuration. The mechanical properties have been evaluated with both tensile test and impact strength (Izod). The thermal conductivity has been also evaluated. As a result, MWCNTs are the nanoadditive with the lowest electrical percolation threshold. This allows MWCNT nanocomposite to drastically change the electrical behavior without a significant embrittlement observed with the other nanoadditives. However, CB with the lowest surface area allows the highest conductivity, even though at a high particle content. EG has a limited effect on electrical properties, but it is the only one with a significant effect on thermal conductivity.
URI: http://hdl.handle.net/2067/46080
ISSN: 2504-477X
DOI: 10.3390/jcs5080196
Rights: Attribution-NonCommercial-NoDerivs 3.0 United States
Appears in Collections:A1. Articolo in rivista

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