Synthesis of polyether for chelating with metal ions in solution

Abstract

The objectives of this research are to synthesize chelating polyether containing aromatic diamine ligand and to determine their chelating ability with metal ions. The Bisphenol-A epoxy resin (2) was crosslinked with crosslinking agent, 2,4-Diamino-6-hydroxy pyrimidine (3), which was the new crosslinking agent having never been used to react with 2 before. The crosslinked resin (4) was the product obtained. The chelating ability of 4 with five metal ions, ie., Ni(II), Cu(II), Co(II), Zn(II) and Pb(II), in various solvents was determined. It was found that 4 is selective to chelate with Pb(II) only. The maximum chelating capacity with Pb(II) was obtained when the mixture of 80% dioxane to 20% water volume by volume was employed.