Nitrogen containing polymers-based triazine: synthesis, characterization and its applications for scavenging of copper(II)

The present work reported the synthesis of four polymers based on 4,6-dichloro-N-(4-methoxyphenyl)-1,3,5-triazin-2-amine (PMA) as a monomer with different diamines (ethylenediamine (EDPMA), 1,4-diaminobutane (BDPMA), piperazine (PZPMA) and p-phenylenediamine (PDPMA)). The prepared porous organic polymers (POPs) were characterized using Fourier transform infrared spectroscopy, elemental microanalysis (CHN), gel permeation chromatography (GPC) and the Brunauer-Emmett-Teller surface area. The thermal behavior was studied using thermogravimetric analysis and differential scanning calorimetry. The thermal properties showed a promising data to be used as flame retardant polymers, where the limited oxygen index value for EDPMA, BDMA, PDMA and PZPMA was 30.5, 28.4, 35.5 and 35.7, respectively. Transmission electron microscopy was employed to study the effect of type of the repeating unit on morphology and shape of polymers. The results revealed that polymers are porous with a maximum porosity of (0.016 cm(3) g(-1)) and surface area of (41.60 m(2) g(-1)). The chelation behavior of the prepared polymers towards Cu(II) was studied, and the loading percentage was measured using inductively coupled plasma mass spectrometry. The thermal properties of the prepared complexes were studied as well.