caa a22 4500 463231325 CHVBK 20180405153243.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10853-007-1943-9 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1943-9 Temperature dependence of electrical conductivity in double-wall and multi-wall carbon nanotube/polyester nanocomposites [Elektronische Daten] [Yılmaz Simsek, Lutfi Ozyuzer, A. Seyhan, Metin Tanoglu, Karl Schulte] The aim of this study is to investigate temperature dependence of electrical conductivity of carbon nanotube (CNT)/polyester nanocomposites from room temperature to 77K using four-point probe test method. To produce nanocomposites, various types and amounts of CNTs (0.1, 0.3 and 0.5wt.%) were dispersed via 3-roll mill technique within a specially formulized resin blend of thermoset polyesters. CNTs used in the study include multi walled carbon nanotubes (MWCNT) and double-walled carbon nanotubes (DWCNT) with and without amine functional groups (-NH2). It was observed that the incorporation of carbon nanotubes into resin blend yields electrically percolating networks and electrical conductivity of the resulting nanocomposites increases with increasing amount of nanotubes. However, nanocomposites containing amino functionalized carbon nanotubes exhibit relatively lower electrical conductivity compared to those with non-functionalized carbon nanotubes. To get better interpretation of the mechanism leading to conductive network via CNTs with and without amine functional groups, the experimental results were fitted to fluctuation-induced tunneling through the barriers between the metallic regions model. It was found that the results are in good agreement with prediction of proposed model. Springer Science+Business Media, LLC, 2007 Simsek Yılmaz Department of Physics, Izmir Institute of Technology, Izmir, Turkey aut Ozyuzer Lutfi Department of Physics, Izmir Institute of Technology, Izmir, Turkey aut Seyhan A. Department of Mechanical Engineering, Izmir Institute of Technology, Gulbahce Campus, Urla, 35430, Izmir, Turkey aut Tanoglu Metin Department of Mechanical Engineering, Izmir Institute of Technology, Gulbahce Campus, Urla, 35430, Izmir, Turkey aut Schulte Karl Polymer Composites, Technische Universität Hamburg-Harburg (TUHH), Hamburg, Germany aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/23(2007-12-01), 9689-9695 0022-2461 42:23<9689 2007 42 10853 https://doi.org/10.1007/s10853-007-1943-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1943-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Simsek Yılmaz Department of Physics, Izmir Institute of Technology, Izmir, Turkey aut NATIONALLICENCE 700 1- Ozyuzer Lutfi Department of Physics, Izmir Institute of Technology, Izmir, Turkey aut NATIONALLICENCE 700 1- Seyhan A. Department of Mechanical Engineering, Izmir Institute of Technology, Gulbahce Campus, Urla, 35430, Izmir, Turkey aut NATIONALLICENCE 700 1- Tanoglu Metin Department of Mechanical Engineering, Izmir Institute of Technology, Gulbahce Campus, Urla, 35430, Izmir, Turkey aut NATIONALLICENCE 700 1- Schulte Karl Polymer Composites, Technische Universität Hamburg-Harburg (TUHH), Hamburg, Germany aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/23(2007-12-01), 9689-9695 0022-2461 42:23<9689 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer