European Journal of Applied Engineering and Scientific Research
Abstract
Author(s): A.D. Kushwaha, V.V. Hiwase, A.B. Kalambe
The resin (abbreviated as PNPRF) was derived from acid catalyzed Polycondensation of p-nitrophenol
(0.1M),resorcinol (0.2M) and formaldehyde (0.4M) using 1M HCl at 120-1250C. The chelates of Cr (III), Co (II), Ni
(II), and Cu (II) were prepared by using metal salts and PNPRF ligand in DMF medium. The materials were
characterised by using elemental analysis, magnetic studies and spectral analysis. In the present paper, electrical
conductivity properties of terpolymer and its chelates were studied over a wide range of temperatures. The
terpolymer resin and its chelates were found to show semi conducting behaviour. The activation energy of
conduction was found to decrease in order [PNPRF] n> [Ni-PNPRF] n> [Co-PNPRF] n> [Cr-PNPRF] n> [Cu-
PNPRF] n.
