Abstract

Carbon containing fillers are widely used in the preparation of polymer composites. Incorporation of fillers with higher electrical conductivity in insulating polymeric matrices imparts significant change of electrical resistivity/conductivity of the composites. Moreover, the changes of electrical properties may also be caused by external triggering actions such as changes of temperature, mechanical strain, concentration of specific gases or vapours etc. Conductivity of the carbonaceous filler, that of the resulting composite as well as their distribution and relative alignment play significant role in the dependence characteristics of electrical properties on such external stimulus. Reversibility of such responsive behaviour opens up potential applicability of such composites in specific sensor applications.

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