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Publikācija: Conductivity Percolation Investigation of Polymer/Nanostructured Conductive Filler Composites with Sensing Properties

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Nosaukums oriģinālvalodā Conductivity Percolation Investigation of Polymer/Nanostructured Conductive Filler Composites with Sensing Properties
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Autori Juris Zavickis
Māris Knite
Ales Mrzel
Kaspars Ozols
Valdis Teteris
Velta Tupureina
Āris Solovjovs
Artis Linarts
Guillaume Malefan
Atslēgas vārdi nanaocomposite, carbon, polyisoprene
Anotācija According to previous research, nanostructured carbon composites are positioned among others as promising materials to partially replace conventional rigid pressure sensitive materials [1, 2]. To understand the basic principles of nanostructured conductive composites, the percolation behaviour should be carefully examined. In this work we have investigated the electrical percolation behaviour of polymer/nanostructured conductive filler composites, depending on filler type and different dispersing techniques used. The extra conductive carbon black, multiwall carbon nanotubes and Mo3S2I8 nanowires were used as fillers in polyisoprene matrix. Different dispersing techniques, including mechanical mixing, solution mixing and ultrasonication were used to distribute conductive filler within matrix. The DC and AC conduction properties of these composites have been evaluated. Remarkable shift of the DC percolation threshold was obtained for carbon black filled composites, by substituting mechanical mixing with ultrasonication in chloroform solution. The polyisoprene - Mo3S2I8 nanowire composite did not possess DC conductivity, but instead AC measurements revealed potential percolation characteristics of such composite.
Atsauce Zavickis, J., Knite, M., Mrzel, A., Ozols, K., Teteris, V., Tupureina, V., Solovjovs, Ā., Linarts, A., Malefan, G. Conductivity Percolation Investigation of Polymer/Nanostructured Conductive Filler Composites with Sensing Properties. No: Abstracts of 3rd COINAPO Topical Meeting "Inorganic Nanomaterials and Their Composites: from Fabrication to Applications", Itālija, Sestriere, 2.-3. marts, 2011. Torino: Italian Institute of Technology, 2011, 35.-35.lpp.
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