Temperature dependence of the electrical conductivity of epoxy/expanded graphite nanosheet composites

TitleTemperature dependence of the electrical conductivity of epoxy/expanded graphite nanosheet composites
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2008
AuthorsJović, N., Dudić D., Montone A., Antisari M.V., Mitrić M., and Djoković V.
JournalScripta Materialia
Volume58
Pagination846-849
ISSN13596462
KeywordsElectric conductivity, Epoxy resins, Expanded graphite (EG), Graphite, Nanosheets, Polymer matrix composites, Scanning electron microscopy, Temperature dependence, Thermal effects
Abstract

The electrical conductivity of composites obtained by mixing epoxy resin and expanded graphite (EG) nanosheets has been investigated. Conductivity changes of up to 11 orders of magnitude were observed as the filler load increased from 0 to 8 wt.%, while the percolation threshold was around 3 wt.%. It was also shown that epoxy/EG composites with intermediate filler contents exhibit a "phase transition" from predominantly "contact conductivity" to "tunneling conductivity" during heating from room temperature to 120 °C. © 2008 Acta Materialia Inc.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-40949090599&doi=10.1016%2fj.scriptamat.2007.12.041&partnerID=40&md5=8d465a42f1973333677f9645e980fa51
DOI10.1016/j.scriptamat.2007.12.041