Complexation of rhodium on radiation-grafted acrylic acid onto poly(tetrafluoroethylene-perfluorovinyl ether) copolymer films

Abstract

Radiation-induced graft polymerization of acrylic acid onto poly(tetrafluoroethylene-perfluorovinyl ether ) copolymer films has been prepared using g-irradiation by the mutual method. The grafted copolymer rapidly complexes with rhodium ions through the carboxylic groups. The complexation process was followed by measuring the variation of the pH of aqueous RhCl 3 solution of several concentrations as a function of time. Spectroscopic, electrical, optical, thermal, and diffraction measurements have been investigated. The results revealed the high stability of the ligand-metal complex formed. Thus, a practical application of the grafted copolymer in the field of rare metal waste treatment is implied.

Synthesis and properties of metal complexes of radiation grafted carboxyl containing copolymers

“…The change of the values of W for the different complexes can be explained with the affinity of each metal ion to formation of a complex. The latter changes the number of hydrophilic groups in the copolymers resulting in change of water content 36. Therefore, the degree of swelling depends mainly on the number of hydrophilic groups in them (respectively, the degree of grafting) and, probably, the metal ion nature also exerts some effect.…”

Adsorption of VO2+ by poly[(tetrafluoroethylene)‐co‐(perfluorovinyl ether)] copolymer grafted with acrylic acid using γ‐irradiation

“…The radiation—induced grafting of acrylic acid onto fluorinated polymers was studied using both simultaneous and pre‐irradiation techniques 3–6. These adsorbent membranes are used for separation of some transition metal ions7–9 and rare‐earth metals10–13 as metallopolymer complexes. The specific structure of the coordinated polymer in which the central metal ions are surrounded by an enormous polymer chain has been discussed 13.…”

“…The specific structure of the coordinated polymer in which the central metal ions are surrounded by an enormous polymer chain has been discussed 13. The coordination reactions of polymer ligand to metal ions or metal complexes have been studied mainly by spectrophotometry 6, 8, 11, 14. Furthermore, the prepared polymer–metal complexes have been investigated by X‐ray diffractometry (XRD) 6, 9, 11…”

Complexes of heavy metals with nitrogen containing copolymers - electrochemical and physicomechanical properties

“…The presence of nitrogen containing functional groups leads to formation of metal complexes when treated with solutions of heavy metal salts. The reactions of co-ordination of the polymer ligands with metal ion and the formation of new structures have been studied mainly by spectroscopic methods [10][11][12]. The introduction of a metal in the polymer chain provokes changes in polymer behavior and its surface morphology.…”