Broad-band conductivity and dielectric spectroscopy of composites of multiwalled carbon nanotubes and poly(ethylene terephthalate) around their low percolation threshold

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00391942" target="_blank" >RIV/68378271:_____/13:00391942 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0957-4484/24/5/055707" target="_blank" >http://dx.doi.org/10.1088/0957-4484/24/5/055707</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0957-4484/24/5/055707" target="_blank" >10.1088/0957-4484/24/5/055707</a>

Result language

angličtina

Original language name

Broad-band conductivity and dielectric spectroscopy of composites of multiwalled carbon nanotubes and poly(ethylene terephthalate) around their low percolation threshold

Original language description

Composites of multiwalled carbon nanotubes with poly(ethylene terephthalate)(PET?MWCNT) with up to 3 vol% MWCNTs were prepared and characterized by broad-band AC conductivity and dielectric spectroscopy up to the infrared range using several techniques.A very low electrical percolation threshold of 0.07 vol% MWCNTs was revealed from the low-frequency conductivity plateau as well as from DC conductivity, whose values show the same critical power dependence on MWCNT concentration with the exponent t=4.3.The temperature dependence down to 5 K has shown semiconductor behaviour with a concentration-independent but weakly temperature-dependent small activation energy of 3 meV. The behaviour is compatible with the previously suggested fluctuation-induced tunnelling conductivity model through a thin ( 1 nm) polymer contact layer among the adjacent MWCNTs within percolated clusters.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nanotechnology

ISSN

0957-4484

e-ISSN

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Volume of the periodical

24

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

"055707-1"-"055707-9"

UT code for WoS article

000313568700024

EID of the result in the Scopus database

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