Onset of electrical percolation in onion-like Carbon/Poly(methyl methacrylate) composites

J. Macutkevic; P. Kuzhir; A. Paddubskaya; J. Banys; S. Maksimenko; S. Moseenkov; V.L. Kuznetsov; O. Shenderova; Philippe Lambin

doi:10.1166/nnl.2013.1699

Onset of electrical percolation in onion-like Carbon/Poly(methyl methacrylate) composites

J. Macutkevic, P. Kuzhir, A. Paddubskaya, J. Banys, S. Maksimenko, S. Moseenkov, V.L. Kuznetsov, O. Shenderova, Philippe Lambin

Research output: Contribution to journal › Article › peer-review

Abstract

The results of broadband dielectric spectroscopy of onion-like carbon (OLC) based Poly(methyl methacrylate) (PMMA) composites are reported in wide temperature range 300-450 K. The dielectric properties of OLC/PMMA composites are chiefly dependent on the preparation technique, in particular annealing above the glass transition temperature of composite with 20 wt.% of OLC inclusions causes the vanishing of β relaxation, electrical conductivity appearance and onset of percolation. The percolation threshold in OLC/PMMA composites is found to be close to 20 wt.%. Below the percolation threshold the dielectric properties of composites in temperature range 300-420 K are determined mainly by β relaxation. The activation energy of such a relaxation is weakly dependent on OLC concentration.

Original language	English
Pages (from-to)	1201-1206
Number of pages	6
Journal	Nanoscience and Nanotechnology Letters
Volume	5
Issue number	11
DOIs	https://doi.org/10.1166/nnl.2013.1699
Publication status	Published - 1 Nov 2013

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title = "Onset of electrical percolation in onion-like Carbon/Poly(methyl methacrylate) composites",

abstract = "The results of broadband dielectric spectroscopy of onion-like carbon (OLC) based Poly(methyl methacrylate) (PMMA) composites are reported in wide temperature range 300-450 K. The dielectric properties of OLC/PMMA composites are chiefly dependent on the preparation technique, in particular annealing above the glass transition temperature of composite with 20 wt.% of OLC inclusions causes the vanishing of β relaxation, electrical conductivity appearance and onset of percolation. The percolation threshold in OLC/PMMA composites is found to be close to 20 wt.%. Below the percolation threshold the dielectric properties of composites in temperature range 300-420 K are determined mainly by β relaxation. The activation energy of such a relaxation is weakly dependent on OLC concentration.",

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T1 - Onset of electrical percolation in onion-like Carbon/Poly(methyl methacrylate) composites

AU - Macutkevic, J.

AU - Kuzhir, P.

AU - Paddubskaya, A.

AU - Banys, J.

AU - Maksimenko, S.

AU - Moseenkov, S.

AU - Kuznetsov, V.L.

AU - Shenderova, O.

AU - Lambin, Philippe

PY - 2013/11/1

Y1 - 2013/11/1

N2 - The results of broadband dielectric spectroscopy of onion-like carbon (OLC) based Poly(methyl methacrylate) (PMMA) composites are reported in wide temperature range 300-450 K. The dielectric properties of OLC/PMMA composites are chiefly dependent on the preparation technique, in particular annealing above the glass transition temperature of composite with 20 wt.% of OLC inclusions causes the vanishing of β relaxation, electrical conductivity appearance and onset of percolation. The percolation threshold in OLC/PMMA composites is found to be close to 20 wt.%. Below the percolation threshold the dielectric properties of composites in temperature range 300-420 K are determined mainly by β relaxation. The activation energy of such a relaxation is weakly dependent on OLC concentration.

AB - The results of broadband dielectric spectroscopy of onion-like carbon (OLC) based Poly(methyl methacrylate) (PMMA) composites are reported in wide temperature range 300-450 K. The dielectric properties of OLC/PMMA composites are chiefly dependent on the preparation technique, in particular annealing above the glass transition temperature of composite with 20 wt.% of OLC inclusions causes the vanishing of β relaxation, electrical conductivity appearance and onset of percolation. The percolation threshold in OLC/PMMA composites is found to be close to 20 wt.%. Below the percolation threshold the dielectric properties of composites in temperature range 300-420 K are determined mainly by β relaxation. The activation energy of such a relaxation is weakly dependent on OLC concentration.

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JO - Nanoscience and Nanotechnology Letters

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ER -

Onset of electrical percolation in onion-like Carbon/Poly(methyl methacrylate) composites

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