Abstract
Poly[(2-hydroxyethyl)-DL-aspartamide] was synthesized by polyreaction of aspartic acid and subsequent polymer-analogous functionalization with ethanolamine. The water-soluble polymer was characterized by FTIR, NMR, TGA and light-scattering measurements. The metal complexing properties of the polymer were studied for Cr(III), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Sr(II), Cd(II) and Pb(II) ions in aqueous solution using the liquid-phase polymer-based retention (LPR) method. According to the retention profiles of LPR, Cr(III), Fe(III), Cu(II) and Pb(II) showed a strong interaction with this polymer under these conditions, indicated by retention values of about 100%. In contrast, Co(II), Ni(II), Zn(II), Sr(II) and Cd(II) exhibited retention values of only 50-60% in dilute solution at pH 5.
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