Mehdi Hosseinzadeh - Marand Faculty of Technical and Engineering, University of Tabriz, Tabriz, Iran
Farideh Mahmoodzadeh - Young Researchers and Elite Clube, Marand Branch, Islamic Azad University, Marand , Iran

Polyvinyltetrazole (PVT) is produced from acrylonitrile (AN) monomer by using free Radical polymerization and Click Chemistry methods. The resulting polymer with a broad range of tetrazole-group contents was conveniently synthesized through [3+2] azide-nitrile cycloaddition reaction of nitrile containing polymer with sodium azide in DMF. The prepared PVT was characterized by13C-NMR, FT-IR and UV-Vis spectroscopies. Elemental analysis indicated that approximately 92% of the cyano groups on the polymer surface were converted totetrazolyl groups. The PVT exhibited excellent adsorption for metal ions and the maximum adsorption capacity for Pb (II) was 2.39mmol/g which are much higher than corresponding literature results. The adsorption process was described as an ion exchange and chelationinteraction mechanisms. The high adsorption rate (<40 min) was seen. The resulting polymer and its metal chelate were characterized by FT-IR, elemental analysis, gravimetry, scanning electronic microscopy (SEM), thermo gravimetry analysis (TGA), UV-Vis spectroscopy, and atomic absorption techniques (AAS). All these analyses methods confirmed the presence of metal in the polymer-metal complex.

Free Radical polymerization, Click Chemistry, Acrylonitrile, Heavy Metal Ions, Adsorption.