Synthesis, Characterization and Metal Ion Chelating Efficiency of an Environment-Friendly Copolymers Containing Dithio Formic Acid and Thiosemicarbazide or 1,2,4-Triazole Group

Ayad Hameed

Department of Chemistry, College of Science, Tikrit University, Tikrit, Iraq.

DOI: 10.4236/ijoc.2013.31002                

Abstract

Six phenolic monomers (M₁ - M₆) have been synthesized, namely, potassium-3-(ortho,para)-hydroxy benzoyl dithiofor- mate (M₁ and M₂), (ortho,para)-(4-amino-5-mercapto-1,2,4 triazol-3-yl)-phenol (M₃ and M₄), (ortho,para)-hydroxy benzoic acid thiosemicarbazide (M₅ and M₆) and twelve novel chelating terpolymers (P₁ - P₁₂) were synthesized by ter- polymerization condensation reaction of these monomers with phenol or bis phenol-A and excess of formalin in basic medium. The monomers (M₁ - M₆) and their co-polymers (P₁ - P₁₂) were characterized by FT.IR, H¹-NMR, elemental analysis and thermal analysis (TGA) and according to data obtained the structures of these compounds were proposed. Analytical evaluation of chelating selectivity of these polymers toward (Co²⁺, Cr³⁺, Cu²⁺, Cd²⁺, Pb²⁺) were achieved by batch equilibrium method, the results show that all synthetic resins have high efficiency toward (Cr³⁺) and less effi- ciency toward (Co²⁺, Cu²⁺, Cd²⁺ and Pb²⁺).

 

Keywords

Organic Terpolymers; Chelating Resin; Thermal Studies

Conflicts of Interest

The authors declare no conflicts of interest.

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