Chelation ion‐exchange study of copolymer resin derived from 8‐hydroxyquinoline 5‐sulphonic acid, oxamide, and formaldehyde

Abstract

Copolymers (8-HQ5-SAOF) were synthesized by the condensation of 8-hydroxyquinoline 5-sulphonic acid (8-HQ5-SA) and oxamide (O) with formaldehyde (F) in the presence of acid catalyst. Four different copolymers were synthesized by using varied molar proportion of the reacting monomers. Copolymer resin composition has been determined on the basis of their elemental analysis and average molecular weights of these resins were determined by conductometric titration in nonaqueous medium. Viscometric measurement in dimethyl sulphoxide (DMSO) has been carried out with a view to ascertain the characteristic functions and constants. Electronic spectra, FTIR, and proton nuclear magnetic resonance spectra were studied to elucidate the structures. The newly synthesized copolymer proved to be a selective chelating ion-exchange copolymer for certain metals. The chelating ion-exchange properties of this synthesized copolymer was studied for different metal ions such as Fe 3þ , Cu 2þ , Ni 2þ , Co 2þ , Zn 2þ , Cd 2þ , and Pb 2þ . A batch equilibrium method was used in the study of the selectivity of metal ion uptake involving the measurements of the distribution of a given metal ion between the copolymer sample and a solution containing the metal ion only for representative copolymer 8-HQ5-SAOF-I due to economy of space. The study was carried out over a wide pH range, shaking time, and in media of various ionic strengths. The copolymer showed a higher selectivity for Fe 3þ , Cu 2þ , and Ni 2þ ions than for Co 2þ , Zn 2þ , Cd 2þ , and Pb 2þ ions.

Surface Chemistry of Gravure Printed Décor Paper and Adhesion of Melamine Formaldehyde Resin Coatings

“…It should be mentioned that a weak broad peak at approximately 3280 cm -1 was also revealed in each spectrum, which might have been attributed to the formation of intermolecular hydrogen bonding between the functional groups of the pre-polymers, including CH2OH, NH, and NH2, and the by-products of the condensation reaction, such as water and free formaldehyde (Zorba et al 2008;Singru and Gurnule 2010;Šmidriaková and Laurová 2011). This band was remarkably stronger in the spectrum of the Latin Walnut paper than that in the spectrum of the Walnut paper, which indicated that noticeably higher contents of water and reactive groups for hydrogen bonding existed in the Latin Walnut-saturated paper surface.…”

Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

“…[32,34,35] Finally, the reported resin is found to be a very effective hazardous metal ion-exchanger than the earlier reported resins. [5,12,18,35] CONCLUSION A novel chelating resin was synthesized for the recovery of harmful metal ions. The synthesized resin was characterized by various spectral techniques, and its morphological features were analyzed.…”

“…Batch equilibrium method was adapted to determine the efficiency of the metal ion uptake capacity of the terpolymer resin under different experimental conditions according to earlier literatures. [16][17][18] Desorption and regeneration studies Exactly, 25 mg of ANAF terpolymer resin was added to 25 ml of 0.1 M metal ion solution in Erlenmeyer flask and mechanically shaked for 1 h. After the shaking time, the resin was filtered off and washed several times with distilled water to remove the excess of metal ion. Then, the resin was treated with 25 ml of 0.01 M NaOH solution in Erlenmeyer flask at the conditions discussed above.…”

“…The results found that the ion-exchanger has good metal ion uptake capacity. [4,5] Polydithiocarbamate resin supported on macroreticular styrene-divinylbenzene copolymer was synthesized for the removal of trace and heavy metal ions. From the results, high sorption capacity was observed when compared with other conventional chelating polymers.…”

A novel comparative study: synthesis, characterization and thermal degradation kinetics of a terpolymer and its composite for the removal of heavy metals

“…The batch equilibrium method was employed to remove the selective metal ions. The copolymer reported a good metal ion uptake for Fe(III), Cu(II) and Ni(II) ions than for Co(II), Zn(II), Cd(II) and Pb(II) ions [2].…”