Condensed matter physics Nanomaterials Multi walled Carbon nanotubes Polyvinyl alcohol
Issue Date:
2011
Publisher:
Elsevier
Citation:
G. Chakraborty, A.K. Meikap, R. Babu, W.J. Blau, Activation behaviour and dielectric relaxation in polyvinyl alcohol and multiwall carbon nanotube composite films, Solid State Communications, 151, 10, 2011, 754-758
Series/Report no.:
Solid State Communications; 151; 10;
Abstract:
The dc and ac electrical transport property of Polyvinyl Alcohol-Multiwall Carbon
Nanotubes (PVA-MWNT) composites has been investigated within a temperature range
77≤T≤300K and in the frequency range 20Hz to 1MHz. The temperature variation of dc
conductivity gives the presence of two different activation energies. The dielectric properties
of the samples have been explained in terms of electric modulus vector .The dielectric
relaxation has been explained in terms of interfacial polarization occurring in between the
insulating PVA matrix and MWNT conductive filler. The variation of the relaxation time
with temperature also indicates the presence of two different activation energies.
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