ION EXCHANGE PROPERTIES OF COPOLYMER RESIN DERIVED FROM PHTHALIC ACID, THIOSEMICARBAZIDE AND FORMALDEHYDE

: A novel chelating terpolymer resin has been synthesized through the copolymerization of phthalic acid and thiosemicarbazide with formaldehyde in 2:1:3 mole ratio using hydrochloric acid as a reaction medium by condensation technique. The synthesized copolymer resin was characterized by UV-visible, FTIR, proton NMR spectroscopy. On basis of the spectral studies, the structure of the copolymer resin was proposed. The physico-chemical parameters have been evaluated for the copolymer resin. Non-aqueous conductometric titration was used to determine the average molecular weight and polydispersity of the PTF-II copolymer resin and the intrinsic viscosity was also determined. The semicrystalline nature of the synthesized copolymer was established by scanning electron microscopy (SEM). Copolymer synthesized is proved to be selective chelating ion exchange copolymer resin for certain metals. chelating ion exchange properties of this polymer was studied for Fe 3+ , Cu 2+ , Cd 2+ , Zn 2+ , Ni 2+ and Pb 2+ ions. A batch equilibrium method was employed in the study of the selectivity of the distribution of a given metal ions between the polymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in a media of various ionic strengths.