Size-dependent electrical and thermal properties of onion-like carbons / polyurethane composites - Université de Lorraine Access content directly
Journal Articles Polymer Composites Year : 2018

Size-dependent electrical and thermal properties of onion-like carbons / polyurethane composites

Ieva Kranauskaite
Jan Macutkevic
Maxime Letellier
  • Function : Author
  • PersonId : 777530
  • IdRef : 191344281
Vanessa Fierro
Alain Celzard

Abstract

Results of dielectric/electrical studies of onion-like carbon (OLC)/polyurethane composite films in very broad frequency (20 Hz-3 THz) and temperature (26-300 K) ranges are presented. We show that the percolation threshold in these composites strictly depends on OLC aggregate size and is lower for composites having smaller OLC aggregates. The electrical conductivity in the composites is mainly due to electron tunnelling between OLC clusters and quasi-one-dimensional hopping inside the clusters. The thermal diffusivity increases with OLC concentration and, as for electrical conductivity, is the highest for composites having the smallest OLC aggregates.
Fichier principal
Vignette du fichier
2018_onion_paperrevised_clean.pdf (953.92 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03569076 , version 1 (12-02-2022)

Identifiers

Cite

Ieva Kranauskaite, Jan Macutkevic, Juras Banys, Vladimir Kuznetsov, Maxime Letellier, et al.. Size-dependent electrical and thermal properties of onion-like carbons / polyurethane composites. Polymer Composites, 2018, 39 (S3), pp.E1834-E1840. ⟨10.1002/pc.24816⟩. ⟨hal-03569076⟩
8 View
68 Download

Altmetric

Share

Gmail Facebook X LinkedIn More