Thermal degradation and antibacterial study of transition metal complexes derived from novel terpolymer ligand

Metal complexes are prepared by the buildup of 8-hydroxyquinoline-5-sulphonic acid, formaldehyde and guanidine with 2 M HCl acid is required as a catalyst for polymerization with different feed ratio (3:1:5) of monomers. The structure of metal complexes and ligand were elucidated by NMR, FTIR and elemental analysis. Thermogravimetric analysis was used for the investigation of thermal stability of the terpolymer ligand metal complexes. Additionally, Freeman-Carroll method was utilized for the calculation of activation energy with the help of TGA data. The surface morphology of terpolymer ligand was examined by scanning electron microscopy. The antimicrobial activities of metal complexes and its ligand were tested against S. aureus, E. coli, and K. Pneumoniae Klebseilla bacteria.