Synthesis and Characterization of Water-Soluble Metal Binding Polyesters Containing Pendant Carboxylic Moiety

Abstract

The water-soluble polyesters were synthesized by the polyaddition reaction between diethylenetriaminepentaacetic acid bisanhydride (DTPABA) and polyethylene glycols (PEG) of different molar masses. The copper complexes of these polyesters were synthesized by the reaction with copper acetate and were characterized by their melting points, elemental analyses, viscometry, FT-IR, UV-visible SEM, AFM, XRD data. Thermal stability of the compounds was studied by TG-DTA analyses. The antibacterial activity of the polyesters was studied against the bacterial species E. coli, S. aureus, P. aeruginosa and B. subtilis. All the polyesters showed moderate anti-bacterial activity against the selected bacteria.

Keywords:

• Antibacterial activity
• Characterization
• Copper complexes
• Polyaddition reaction

ACKNOWLEDGMENTS

The authors would like to acknowledge The Indian Institute of Technology (IIT), Mumbai, and National Center for Nanosciences and Nanotechnology, University of Mumbai, Mumbai, India for providing the surface morphology.

Notes

*Decomposition Temperature.

*DP: degree of polymerization (n for polyethylene glycol, m for polyesters).

b-broad, s-strong, w-weak.