Lithuanian Journal of Physics article / Lietuvos fizikos žurnalo straipsnis

ENHANCING ELECTRICAL CONDUCTIVITY OF MULTIWALLED CARBON NANOTUBE/EPOXY COMPOSITES BY GRAPHENE NANOPLATELETS
Ieva Kranauskaitė^a, Jan Macutkevič^a, Anna Borisova^b, Alfonso Martone^c, Mauro Zarrelli^c, Algirdas Selskis^d, Andrey Aniskevich^b, and Jūras Banys^a
^aFaculty of Physics, Vilnius University, Saulėtekio 3, 10257 Vilnius, Lithuania
^bInstitute for Mechanics of Materials, University of Latvia, 23 Aizkraukles iela, 1006 Riga, Latvia
^cInstitute for Polymers, Composites and Biomedical Materials, National Research Council, P.le E. Fermi 1, 80155 Portici, Naples, Italy
^dNational Center for Physical Sciences and Technology, Saulėtekio 3, 10222 Vilnius, Lithuania
ieva.kranauskaite@ff.vu.lt

Received 20 June 2017; revised 20 July 2017; accepted 20 September 2017

The need of high performance integrated circuits and high power density communication devices drives the development of materials enhancing the conductive performances by carbon nanoparticles. Among nanocomposites, the ternary hybrid carbon nanotubes/graphene nanoplatelets/polymer composites represent a debatable route to enhance the transport performances.
In this study hybrid ternary nanocomposites were manufactured by direct mixing of multiwalled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) at a fixed filler content (0.3 wt.%), but different relative combination, within an epoxy system. MWNT/epoxy nanocomposites were manufactured for comparison. The quality of dispersion was evaluated by optical and scanning electron microscopy (SEM). The electrical properties of hybrid composites were measured in the temperature range from 30 up to 300 K.
The synergic combination of 1D/2D particles did not interfere with the percolative behaviour of MWCNTs but improved the overall electrical performances. The addition of a small amount of GNPs (0.05 wt.%) led to a strong increment of the sample conductivity over all the temperature range, compared to that of mono filler systems.

Keywords: graphene nanoplatelets, multiwalled carbon nanotubes, epoxy resin, hybrid nanocomposites, electrical conductivity
PACS: 72.80.Tm

EPOKSIDINĖS DERVOS KOMPOZITŲ SU DAUGIASIENIAIS ANGLIES NANOVAMZDELIAIS ELEKTRINIO LAIDUMO GERINIMAS GRAFENO DALELĖMIS
Ieva Kranauskaitė^a, Jan Macutkevič^a, Anna Borisova^b, Alfonso Martone^c, Mauro Zarrelli^c, Algirdas Selskis^d, Andrey Aniskevich^b, Jūras Banys^a

^aVilniaus universiteto Fizikos fakultetas, Vilnius, Lietuva
^bLatvijos universiteto Medžiagų mechanikos institutas, Ryga, Latvija
^cNacionalinės mokslinių tyrimų tarybos Polimerų, kompozitų ir biomedžiagų institutas, Portiči, Italija
^dFizinių ir technologijos mokslų centras, Vilnius, Lietuva

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