Synthesis characterization and analytical applications of new chelating resin of formaldehyde-condensed phenolic schiff base

• Published in: Ibn Al-Haitham Journal for Pure and Applied Sciences Vol. 31; no. 2; pp. 97 - 114
• Main Authors: Umran, Khalidah Abbas, Laftah, Shayma Umran
• Format: Journal Article
• Language: English
• Published: Baghdad, Iraq University of Baghdad, College of Education for Pure Science / Ibn al-Haitham 12-09-2018; University of Baghdad
• Subjects: phenolic schiff bases, formaldehyde Chelating Resin, pthale amice acid, Thermal Studies
• ISSN: 1609-4042; 2521-3407
• DOI: 10.30526/31.2.1961

A new chelating phenolic Schiff base containing phthalate imide pendant group resin was
synthesized by three steps. The first step includes synthesis of 2-(4-aminobiphenyl-4-
ylcarbamoyl) benzoic acid (1), Via reaction of pthalic anhydride with benzidine. In the second
lines, the compound that we obtained in the first step was reacted with ohydroxybenzaldehyde to obtain phenolic Schiff base 2-(4'-(2-hydroxybenzylideneamino)
bephenyl-4-yl carbamoyl) benzoic acid (2) The third step includes prepared resin during
intensification Schiff base derived with formaldehyde inan alkaline middle. Thepthale amice
acid, Schiff base and resin were characterized by various instrumental techniques like FT-IR,
CNMR and elemental analysis, thermal behavior of the polymer was investigated 13 HNMR , 1
by DSC and TGA.SEM analysis of polymer shows the amorphous structure of polymer. The
chelating behaviors was examined against Ni (ᴨ), Cd (ᴨ), Cr(ш)and Pb(ᴨ). using patch
method in different conditions like treatment time and pH at room temperature. The resin
shows a good loading capacity.