Water Soluble Dextran‐Polyacrylamide Graft Copolymers for Capturing Metal Ions

Abstract

The graft copolymers of Polyacrylamide (PAA) to Dextran (M w ¼ 20000 and M w ¼ 70000) have been synthesised by ceric-ion-reduced redox initiation method. Molecular characteristic of graft copolymers were determined from light scattering, SEC, and viscometry data. It was established that the increase of molecular weight of Dextran component up to 3.5 times do not influence essentially organization at molecular level of these copolymers in aqueous solution. Thet D-g-PAA copolymers capable of binding the heavy metal ions.

Features of the intramolecular structure of branched polymer systems in solution

“…At present, cerium(IV) salts are considered to be most promising for the initiation of grafted copolymerization because practically no monomer homopolymerization is observed when they are used [119][120][121][122][123][124][125][126][127].…”

Outcome of therapy‐related acute promyelocytic leukemia with or without arsenic trioxide as a component of frontline therapy

“…Grafting of vinyl monomers significantly improves its shelf life5 and the grafted guar gum finds various commercial applications 17. Grafting of poly(acrylonitrile) on to guar gum followed by its saponification offer grafted material bearing COOH/CONH 2 groups18, 19 and potentially such material is expected to be good metal ion binder. However, being water soluble, it cannot be used and recycled as metal ion binder under aqueous conditions.…”

Synthesis of a novel amphoteric chelating polymer flocculant and its performance in Cu2+ removal

“…In Figure 3(a), the broad absorption band observed at 3418.73 cm −1 is due to the stretching vibration of the NH group of the AM unit and the OH group of water absorbed from air during pellet‐making due to the strong hygroscopicity of P(DMDAAC‐ co ‐AM) 32. The bands around 1659.52 and 1546.35 cm −1 are respectively assigned to the CO stretching vibrations and NH deformation vibrations of the CONH 2 group 32–34. The weak peaks at 1112.35 and 1038.62 cm −1 are due to CN stretching vibrations 34.…”