Resins with the ability to bind copper and uranyl ions

Abstract

ABSTRACT:Crosslinked poly(1-vinyl imidazole-coacrylic acid) and crosslinked poly(1-vinylmidazole-co-2-acrylamido-2-methyl-1-propanesulfonic acid) were synthesized by radical polymerization and characterized by elemental analysis and FTIR spectroscopy. The polymerization yields were 79 and 99%, respectively. The metal ion binding properties for copper(II) and uranium(VI) were studied under noncompetitive and competitive conditions by Batch equilibrium procedure. The resin crosslinked poly(1-vinyl imidazole-co-acrylic acid) showed a higher dependence on pH than crosslinked poly(1-vinylmidazole-co-2-acrylamido-2-methyl-1-propanesulfonic acid). The retention of uranyl ions for the latter resin was close to 100% at pH 5.0. The higher maximum retention capacity was close to 0.

Polymers and nanocomposites: synthesis and metal ion pollutant uptake

“…In contrast to the styrene‐based resins, these resins are highly hydrophilic, and the water absorption can be controlled by the crosslinker degree and the hydrophilicity of the monomer. Rivas et al have studied several vinyl monomers as homopolymers and copolymers …”

Effect of Crosslinker Chemical Structure and Monomer Compositions on Adsorption of Uranium (VI) Ions Based on Reactive Crosslinked Acrylamidoxime Acrylic Acid Resins

“…[34] Rivas et al reported that the uranyl ions retention of crosslinked poly (1-vinyl imidazoleco-2-acrylamido-2-methyl-1-propanesulfonic acid) is greater than that of (1-vinyl imidazole-co acrylic acid) at the same pH. [35] 3.1.2. Effect of Crosslinker Type on UO 2þ 2 Ions Uptake Tables 1-3 show the variation of UO 2þ 2 ions uptake with crosslinker percentage and type in the hydrogels at pH 2-8 in different acid media.…”

Uranyl Ions Uptake from Aqueous Solutions Using Crosslinked Ionic Copolymers Based on 2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymers

“…[18] Rivas et al reported that the uranyl ions retention of crosslinked poly (1-vinyl imidazole-co-2-acrylamido-2-methyl-1-propanesulfonic acid) is greater than that of (1-vinyl imidazole-co acrylic acid) at the same pH. [8] The crosslinked structure of polymer is essentially required for the packed column application. Moreover, the crosslinked polymer might form a more stable complex with metal ions due to its rigid network structures.…”

“…In addition, the unusual coordination structures of uranyl complexes having four, five, or six secondary coordination in an equatorial plane perpendicular to the main U-O-U axis also attracted interest in the design of uranophiles. [8] In the present work, the application of the chelating polymer containing carboxylic and sulphonic groups in the recovery of uranium was investigated. In this respect, AMPS=AA copolymers were prepared by free radical polymerization technique for the purpose adsorption of uranium.…”