Pyroelectricity in rubber composite films

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Abstract
A series of composities of butadiene acrylonitrile rubber (NBR) blended with BaTiCL3 ceramic material were prepared to study their pyroelectric behaviour. Pyroelectricity may arise from the permanent C=N dipoles of the rubber and those of BaTiO3 ferroelectric material. The pyroelectric coefficient (γ3) was found to be dependent on different factors such as; temperature, poling field, poling temperature, thickness and BaTiO3 concentrations. Different dipoles are thought to be more effective at low temperature (: g) while space charge is responsible for pyro-electricity at relatively higher temperatures.