The coordination properties of network polyelectrolytes prepared from polyethylenepolyamines

Complexation of anion exchangers based on polyimines and allyl and epoxy compounds with transition metal cations

“…Figure 4 shows that, with increasing acidity of the aqueous phase, the sorption of metals decreases. This effect is caused by a decrease in the concentration of coordination-active (unprotonated) sorbing sites in the resin [13]. We found that the sorption of transition metals on the anion exchangers under consideration is the strongest at the following pH: Cu 2+ , 536; Ni 2+ , 6 37; and Zn 2+ , 7.…”

Characterization and analytical application of an α-hydroxy oxime resin for chromatography

“…The structure of resin-metal complexes has been studied both by potentiometric titration and by infrared spectroscopy (45,50,(58)(59)(60). Kinetics of formation of resin-metal complexes has also been studied (55,56), as has the effect of the struc ture of the macromolecular framework on the complexing proper ties of some of the resins (46,48,52).…”

Characterization and analytical application of an α-hydroxy oxime resin for chromatography

“…Saldadze and co-workers have worked mainly with cation exchangers of the phosphoric acid type (45)(46)(47) and with anion exchangers of the vinylpyridine type (48)(49)(50)(51)(52)(53) , and of the polyethylenepolyamine type (54)(55)(56)(57)(58)(59)(60) . It has been found that, in general, the stability of the resin-metal complexes is in agreement with the stability of the metal complexes with the monomeric reagents.…”

“…The structure of resin-metal complexes has been studied both by potentiometric titration and by infrared spectroscopy (45,50,(58)(59)(60). Kinetics of formation of resin-metal complexes has also been studied (55,56), as has the effect of the struc ture of the macromolecular framework on the complexing proper ties of some of the resins (46,48,52 (85).…”