Synthesis, characterization and in vitro antimicrobial study of bioactive polyesters derived from new biobased flame retardant aromatic diacid monomer containing taurine moiety

5-(2-tetrachlorophthalimidoethanesulfonamido) isophthalic acid (6), based on taurine, was simply prepared in three steps. Also a series of novel biologically active polyesters (PEs) were synthesized by the reaction of this monomer with several aromatic diols by step growth polymerization using tosyl chloride (TsCl)/dimethylformamide (DMF)/pyridine (Py) system as a condensing agent. The resulting new polymers were obtained in good to high yields with moderate inherent viscosities. All of the PEs were characterized by FT-IR and some of them were also characterized by 1H NMR and elemental analyses methods. The thermal stability of PEs was evaluated with thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) techniques under a nitrogen atmosphere and it was found that, they have moderate stability. Limiting oxygen index (LOI) of the polymers confirmed that the synthesized compounds have flame retardant properties. Soil bioactivity behavior of the diacid 6 and all of PEs derived from this diacid was investigated in culture media and it was found that synthesized diacid monomer 6 and all PEs have possibility of biodegradation under natural microbial environmental.