The resin was synthesized by condensation of 2, 4-dihydroxyacetophenone (2, 4-HA) and biuret (B) with formaldehyde (F) in the presence of 2 M HCl as catalyst with varied molar ratios of reacting monomers. The electrical properties of 2, 4-HABF-I, 2, 4-HABF -II, 2, 4-HABF -III and 2, 4-HABF -IV copolymers were measured over a wide range of temperature (303-423 K). From the electrical conductivity of these copolymers, activation energies of electrical conduction have been evaluated and values lies in the range 6.3103 x 10-20 - 8.9581 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 σ = σ0 exp(-ΔE/kT) is obeyed. On the basis of above studies, these copolymers can be ranked as semiconductors.
