Corrosion mitigation performance of disodium EDTA functionalized chitosan biomacromolecule - Experimental and theoretical approach
Chitosan derivatives; Corrosion inhibitor; LPR method; Molecular dynamics simulation; Monte Carlo studies; Statistical modeling
Disodium ethylenediaminetetraacetate salt is known for its excellent coordinating properties with the metal ions. The present study deals with the investigation of the prepared Disodium EDTA functionalized chitosan in corrosion inhibition for mild steel in 1 M HCl. The modified chitosan was characterized by spectral studies, thermal analysis, and Zeta potential studies. The corrosion inhibition efficiency (%) was evaluated using the gravimetric method and electrochemical studies. The electrochemical studies included potentiodynamic polarization, linear polarization resistance, and electrochemical impedance methods. The modified chitosan polymer showed an inhibition efficiency of 96.63% for 500 ppm at 303 K. Adsorption process obeyed Langmuir isotherm. Experimental results and theoretical calculations endorsed initial physisorption followed by a chemisorption process. Surface characterization studies supported the formation of a protective film that enabled the inhibition process. Density functional theory, Monte Carlo studies, and molecular dynamics simulation studies show a good agreement with the experimental results. Two-way Analysis of Variance was performed to test the influence of immersion period and inhibitor concentration on the corrosion rate using the statistical software IBM SPSS 20.0. A quartic model was generated as the best fit with the highest R2 value of 0.973. Design Expert software was employed for statistical modeling fit. 2021
Jessima S.J.H.M.; Subhashini S.; Berisha A.; Oral A.; Srikandan S.S.
International Journal of Biological Macromolecules, Vol-178, pp. 477-491.
ISSN: 1418130; PubMed ID: 33636273; CODEN: IJBMD
https://doi.org/10.1016/j.ijbiomac.2021.02.166 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101943926&doi=10.1016%2fj.ijbiomac.2021.02.166&partnerID=40&md5=3c4160d2a8c87dd59adc4905c96b4a73
Jessima S.J.H.M., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India, Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women (Deemed to be University), Coimbatore, 641043, India; Subhashini S., Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women (Deemed to be University), Coimbatore, 641043, India; Berisha A., Chemistry Department of Natural Sciences Faculty, University of Prishtina, rr. NaTereze nr.5, Prishtina, 10000, Serbia, Materials Science - Nanochemistry Research Group, NanoAlb Unit of Albanian Nanoscience and Nanotechnology, Tirana, Albania; Oral A., Department of Chemistry, Faculty of Sciences and Arts, CanakkaleOnsekiz Mart University, Canakkale, 17020, Turkey; Srikandan S.S., Department of Applied Science, PSG COLLEGE OF TECHNOLOGY, Peelamedu, Coimbatore, 641004, India