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Electrical Properties of Organic Polymers Derived From 2-Hydroxy-4-Methoxybenzophenone, 1, 5-Diamino Naphthalene And Formaldehyde

Nilesh Kale and Wasudeo B. Gurnule

The organic polymer 2-hydroxy 4-methoxybenzophenone (DMB) -1,5-diaminonaphthalene (DAN) - formaldehyde (F) were synthesized by the condensation of 2-hydroxy 4-methoxybenzophenone and 1,5-diaminonaphthalene with formaldehyde in the presence of a hydrochloric acid catalyst with varied molar ratios of reacting monomers. Electrical conductivity measurements have been carried out to ascertain the semiconducting nature of the terpolymer resin. The electrical properties of DMBDANF-I, DMBDANF -II, DMBDANF -III and DMBDANF -IV polymers were measured over a wide range of temperature (314-425 K). From the electrical conductivity of these terpolymers, activation energies of electrical conduction have been evaluated and values lies in the range 15.86 x 10-20 – 16.44 x 10-20 J/K. The plots of log σ vs 103/T are found to be linear over a wide range of temperature, which indicate that the Wilson’s exponential law.