Type

Journal Article

Authors

Werner Blau

Subjects

Physics

Topics
multi walled carbon nanotubes dielectric films nanomaterials dielectric relaxation polyvinyl alcohol condensed matter physics composite films carbon carbon composites

Activation behaviour and dielectric relaxation in polyvinyl alcohol and multiwall carbon nanotube composite films (2011)

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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Full list of authors on original publication

Werner Blau

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Werner Blau
Trinity College Dublin
Total Publications: 109