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Nanomaterials (Basel). 2018 Apr 22;8(4). pii: E264. doi: 10.3390/nano8040264.

Electrically and Thermally Conductive Low Density Polyethylene-Based Nanocomposites Reinforced by MWCNT or Hybrid MWCNT/Graphene Nanoplatelets with Improved Thermo-Oxidative Stability.

Author information

1
Institute of Materials Science and Engineering, West Pomeranian University of Technology, Piastow Av. 17, 70310 Szczecin, Poland. sandra.paszkiewicz@zut.edu.pl.
2
Institute of Physics, West Pomeranian University of Technology, Piastow Av. 48, 70311 Szczecin, Poland. anna.szymczyk@zut.edu.pl.
3
Institute of Materials Science and Engineering, West Pomeranian University of Technology, Piastow Av. 17, 70310 Szczecin, Poland. daria.pawlikowska@zut.edu.pl.
4
Department of Electrotechnology and Diagnostics, West Pomeranian University of Technology, Sikorskiego str. 37, 70310 Szczecin, Poland. jan.@zut.edu.pl.
5
Department of Electrotechnology and Diagnostics, West Pomeranian University of Technology, Sikorskiego str. 37, 70310 Szczecin, Poland. marek.zenker@zut.edu.pl.
6
ELPAR Cable Factory, Laskowska str. 1, 21200 Parczew, Poland. roman.masztak@elpar.pl.

Abstract

In this paper, the electrical and thermal conductivity and morphological behavior of low density polyethylene (LDPE)/multi-walled carbon nanotubes (MWCNTs) + graphene nanoplatelets (GNPs) hybrid nanocomposites (HNCs) have been studied. The distribution of MWCNTs and the hybrid of MWCNTs/GNPs within the polymer matrix has been investigated with scanning electron microscopy (SEM). The results showed that the thermal and electrical conductivity of the LDPE-based nanocomposites increased along with the increasing content of carbon nanofillers. However, one could observe greater improvement in the thermal and electrical conductivity when only MWCNTs have been incorporated. Moreover, the improvement in tensile properties and thermal stability has been observed when carbon nanofillers have been mixed with LDPE. At the same time, the increasing content of MWCNTs and MWCNTs/GNPs caused an increase in the melt viscosity with only little effect on phase transition temperatures.

KEYWORDS:

carbon nanofillers; hybrid nanocomposites; mechanical properties; thermal and electrical conductivity; thermo-oxidative stability

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