Problems of unit variability in metal-containing polymers

J of Applied Polymer Sci

Pooley

Luna

2002

Water-soluble copolymers of N-acryloyl-N-methylpiperazine and N-acetyl-␣-aminoacrylic acid were synthesized by radical polymerization. The copolymerization yield ranged between 60 and 97%. The FTIR and NMR spectra demonstrated that the copolymerization occurred. The copolymer composition was determined from 1 H-NMR spectra by comparison of methyl groups from both moieties. The copolymers were richest in AAA units. The metal ion retention properties were investigated by the liquid-phase polymer-based retention (LPR) technique at different pH and filtration factors. The affinity for the metal ions depended on the copolymer composition, pH, and filtration factor.

Section: Resultsmentioning

confidence: 99%

Section: Water-soluble Copolymers/metal Ion Interactionsmentioning

confidence: 99%

Ultrafiltration of metal ions by water‐soluble chelating poly(N‐acryloyl‐N‐methylpiperazine‐co‐N‐acetyl‐α‐aminoacrylic acid)

J of Applied Polymer Sci

Pooley

Luna

2002

“…The polydentate properties of the carboxylate groups RCOO -are well known. [1] In reactions of M 2+ it can act as mono-, bi-, tri-, or tetradentate ligand even when the multiple bond does not participate in the complexation. Mono-and bidentate types of metal binding are the most typical.…”

Section: Resultsmentioning

confidence: 99%

Poly(N-acetyl-α-acrylic acid): Synthesis, Characterization and Chelation Properties through Liquid Phase Polymer-Based Retention Technique

Macromol. Rapid Commun.

Pooley

Luna

2001

The synthesis and characterization of the water‐soluble poly(N‐acetyl‐α‐acrylic acid) by radical polymerization were carried out. The polymer was characterized by Fourier Transform Infrared (FT‐IR), 1H NMR and 13C NMR spectroscopies, and thermogravimetric analysis (TGA). The metal ion binding properties for the metals Cu(II), Co(II), Ni(II), Cd(II), Zn(II), Pb(II), Hg(II), Cr(III) in the aqueous phase were studied using the liquid‐phase polymer‐based retention technique. The metal ion interactions with the hydrophilic polymer were determined as a function of pH and of the filtration factor. The polychelatogen showed a high affinity for metal ions and higher selectivity for Cr(III) at pH = 3.

“…The possibility of synthesizing derivatives of commercially available WSPs to achieve selective metal ion complexation has been recognized from early on. Thus, water‐soluble functional polymers containing ligands, on the main or side chains, have been investigated for the removal of metal ions in the homogeneous phase 1–24. These chelating polymers, termed polychelatogens, have been prepared, by functionalizing various functional polymers.…”

Section: Introductionmentioning

confidence: 99%

Novel water‐soluble acryloylmorpholine copolymers: Synthesis, characterization, and metal ion binding properties

J of Applied Polymer Sci

Maureira

Geckeler

2006

Poly(4-acryloylmorpholine), poly(4-acryloylmorpholine-co-2-acrylamido-2-methyl-1-propane sulfonic acid), and poly(2-acrylamido-2-methyl-1-propane sulfonic acid) were synthesized by radical polymerization. The water-soluble polymers obtained, containing tertiary amino, amide, and sulfonic acid groups, were investigated, in view of their metal binding properties, as polychelatogens by using the liquid-phase polymer-based retention technique, under different experimental conditions. The metal ions investigated were Ag(I), Cu(II), Co(II), Ni(II), Cd(II), Pb(II), Zn(II), Cr(III), and Al(III).