Copolymerization of pyrrole and aniline was carried out using chemical methods. The synthesis was carried out at different temperatures for different pro portions of the monomers. The monomer reactivity ratios for pyrrole and aniline were calculated as 5.2 and 0.19, respectively, by using the low conversion analysis method. In addition, the same was done for two different concentrations of the initiator. The graphs for percentage conversion were plotted for various combinations of tem perature, feed ratio and initiator concentration. Thus, an effort was made to study the impact of various parameters on the process of copolymerization.
Chemical oxidative copolymerization of pyrrole and aniline was performed for three feed ratios at room temperature (30 o C) using FeCl 3 as an initiator. The synthesis was carried out for two different initiator concentrations. The I-V plots for the respective samples have been plotted which indicate the linear or ohmic behavior of the samples with respect to field variation. The dc electrical conductivity of the copolymers was measured at a field of 27V/cm using two probe method in the temperature range of 313-673K. The log σ versus 1/T graphs for these samples have been plotted in the same temperature range. The results show transitions of the samples from metallic to semiconducting behavior and vice versa depending upon each sample at a particular temperature specific for the sample. The results show reduction in the conductivity of prepared copolymers on comparison with that of the homopolymers..
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