Resumen

MARAMBIO, OSCAR G.; PIZARRO, G. DEL C.; JERIA, MANUEL  y  HUERTA, MARGARITA. PREPARATION, CHARACTERIZATION AND APPLICATION OF POLY(HYDROXYETHYL METHACRYLATE -co- ACRYLAMIDE) AS NON IONIC WATER-SOLUBLE POLYCHELATOGEN. J. Chil. Chem. Soc. [online]. 2003, vol.48, n.1, pp. 41-48. ISSN 0717-9707.  doi: 10.4067/S0717-97072003000100008.

The free radical copolymerization of soluble poly(hydroxyethyl methacrylate-co-acrylamide) was studied in the range 25 to 75 % in the feed. The copolymers compositions were determined from the N/C by elemental analysis. The r₁ and r₂ were determined by the Kelen Tüdös method. The experimental data indicate random comonomer incorporation with alternanting tendency. The separation of various metal ions by the water-soluble poly(hydroxyethyl methacrylate-co-acryl amide) reagent in aqueous phase using the Liquid-phase Polymer-based Retention (LPR) was investigated. The method is based on the retention of inorganic ions by this polymer in a membrane filtration cell and subsequent separation of low-molar mass species from the polymer complex formed. It is shown that poly(HEMA-co-AAm) can bind metal ions : Cr(III), Co (II), Zn(II), Ni(II), Cu(II), Cd(II), Pb(II), Hg(II), and Fe(III) in aqueous solution at pH 3, 5, and 7. The inorganic ion interaction with the hydrophilic polymer was determined as a function of pH and filtration factor. In addition, the maximum capacity values of the copolymer for lead (II) were investigated at different pH

Palabras clave : Metal polymer complexes; reactivity ratios; water-soluble copolymer.