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Vibrational and electrical investigations of a uniaxially stretched polystyrene/carbon nanotube composite |
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| Institution: | 1. University of Rome “Niccolò Cusano”, Via Don Carlo Gnocchi 3, 00166 Rome, Italy;2. Italian Interuniversity Consortium on Materials Science and Technology (INSTM), Italy;3. Bridgestone Technical Center Europe, via Fosso del Salceto 13-15, 00128 Castel Romano (Rome), Italy;4. University of Rome “Tor Vergata”, Department of Chemical Science and Technology, Via della Ricerca Scientifica 1, 00133 Rome, Italy;5. University of Rome “Tor Vergata”, Department of Enterprise Engineering, Via del Politecnico 1, 00133 Rome, Italy |
| Abstract: | Multiwall carbon nanotube (MWCNT)/polystyrene (PS) composite materials were prepared in the absence and in the presence of a surfactant. TEM analysis reveals the formation of chains made of several nanotubes tied up together upon application of the surfactant while an almost random distribution is observed without any treatment. These nanotubes are seen to be highly oriented in the uniaxially stretched composite. It is shown that the presence of the surfactant and the alignment reduce electrical conductivity while polymer chain orientation remains insensitive to these parameters. |
| Keywords: | Carbon nanotubes Nanocomposites Polystyrene Surfactant Electrical conductivity Orientation Infrared dichroism Raman spectroscopy |
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