Three polyamine-functionalized poly (vinyl chloride) prepared by ethylenediamine (EDA), diethylenetriamine (DETA) and triethylenetetramine (TETA) called respectively: PVC-EDA, PVC-DETA and PVC-TETA. The synthesized modified polymers have been investigated as high-capacity chelating agents for trivalent cations Bi(III) and Cr(III) from aqueous solutions. The structural properties of the polymers were characterized by elemental analysis and infrared spectroscopy (FT-IR). These new polymers were found to be highly effective for the extraction of Bi(III) and Cr(III) ions. Kinetic data revealed that the extraction process was achieved within 24 hours. The functionalized polymer by TETA: PVC-TETA had a high selectivity of extraction for the metals Bi(III) and Cr (III) with percentages of extraction respectively about 97 % and 90 %.
F. Brahmi, A. Bel Hadj Amor, F. Meganem
Poly (vinyl chloride), Polyalkylamines, Functionalization, Metal cations, Extraction.