Polyisoprene/Nanostructured Carbon Composites for Applications in Temperature Sensors
Abstract
The studies of electrical properties of the
polyisoprene (PI) matrix/high structure carbon black (HSCB)
composites (PCBC) with various concentrations (8, 9, 10 and 11
mass parts) of filler have been carried out in the temperature
interval of 90K–330K. In this paper we focus on the investigation
of direct current (DC) conductivity in a low-temperature region
with negative temperature coefficient of resistivity (NTCR). It
has been proven that variable range hopping (VRH) conduction
is dominated by hopping of carriers among localized states in a
low-temperature range. At higher temperatures the nearest
neighbour hopping (NNH) conductivity or constant range
hopping charge transport takes place. The reversibility as well as
small hysteresis of resistance change versus temperature
indicates prospective temperature sensor application for PCBC
polyisoprene (PI) matrix/high structure carbon black (HSCB)
composites (PCBC) with various concentrations (8, 9, 10 and 11
mass parts) of filler have been carried out in the temperature
interval of 90K–330K. In this paper we focus on the investigation
of direct current (DC) conductivity in a low-temperature region
with negative temperature coefficient of resistivity (NTCR). It
has been proven that variable range hopping (VRH) conduction
is dominated by hopping of carriers among localized states in a
low-temperature range. At higher temperatures the nearest
neighbour hopping (NNH) conductivity or constant range
hopping charge transport takes place. The reversibility as well as
small hysteresis of resistance change versus temperature
indicates prospective temperature sensor application for PCBC
Keywords: |
polyisoprene, high structure carbon black, composite, charge hopping conductivity, temperature sensor
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Full Text: |
DOI: 10.7250/msac.2013.005
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