Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/55191
Title: A simple strategy to increase inhibitory activity of chitosan towards iron corrosion in acidic media
Authors: Yavari, Zahra
Nematiyan, Salameh
Saraveni, Hamideh
Noroozifar, Meissam
Keywords: Chitosan;Corrosion inhibitor;Potassium iodide;Iron;Surface coverage
Issue Date: May-2020
Publisher: NISCAIR-CSIR, India
Abstract: The chitosan as a natural and inexpensive polymer is considered as an appropriate choice towards the corrosion inhibitory. Here, the corrosion and inhibition efficacy of iron sheets is examined in the H2SO4 solution and the presence of chitosan and potassium iodide as an inhibitor through gravimetry, potentiodynamic polarization, and impedance analyses. The inhibition performance is found to be enhanced by adding chitosan concentration. The experimental data demonstrate that the doping iodide ion to chitosan is efficient on the surface coverage and the inhibition performance. The introduced inhibitors are of the interface inhibitors → liquid phase → mixed type with the physical adsorption. The adsorption of iodized chitosan on the iron surface is followed Langmuir isotherm. These inhibitors, by changing the electrical double layer, increase the resistance of charge transfer. The existence of iodide in the chitosan structure improves the electron density of polymer and strengthens the interaction between inhibitor and metal.
Page(s): 227-234
URI: http://nopr.niscair.res.in/handle/123456789/55191
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.27(3) [May 2020]

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