Table of Contents
Indian Journal of Materials Science
Volume 2014 (2014), Article ID 356075, 9 pages
Research Article

Water-Soluble and Biodegradable Pectin-Grafted Polyacrylamide and Pectin-Grafted Polyacrylic Acid: Electrochemical Investigation of Corrosion-Inhibition Behaviour on Mild Steel in 3.5% NaCl Media

Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore 641043, India

Received 16 October 2013; Accepted 21 November 2013; Published 7 April 2014

Academic Editors: J. M. Deitzel, K. Dhara, M. Lavorgna, P. B. Wagh, and H. S. Yathirajan

Copyright © 2014 R. Geethanjali et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Pectin-g-polyacrylamide (denoted as Pec-g-PAAm) and pectin-g-polyacrylic acid (denoted as Pec-g-PAA) were synthesized using pectin, acrylamide, and acrylic acid as starting materials. The grafted polymers were characterized using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analyser (TGA), and scanning electron microscopy (SEM). The corrosion inhibition behaviour of the grafted polymers on mild steel in 3.5% NaCl was evaluated electrochemically through Tafel polarization and impedance studies. The corrosion inhibition performance of both the polymers was found to be around 85%.