Preparation, characterization, and evaluation of corrosion inhibition efficiency of sodium lauryl sulfate modified chitosan for mild steel in the acid pickling process
- Title
- Preparation, characterization, and evaluation of corrosion inhibition efficiency of sodium lauryl sulfate modified chitosan for mild steel in the acid pickling process
- Creator
- Jessima S.J.H.M.; Berisha A.; Srikandan S.S.; Subhashini S.
- Description
- The polar head and a hydrophobic long alkyl chain end of surfactants show effective adsorption on the metal surfaces and metal/solution interfaces. The present study deals with the investigation of corrosion inhibition efficiency of chitosan modified with an anionic surfactant, namely sodium lauryl sulfate. The modified chitosan was characterized using spectral techniques such as ATR- FTIR and NMR, thermal analytical methods that include TGA and DSC. The surface charge and particle size distribution were analyzed using Zeta potential analyzer. The corrosion inhibition efficiency of the water-soluble modified chitosan was evaluated using gravimetric and electrochemical methods. A maximum corrosion inhibition efficiency of 96.44% for 6 h of immersion period at 303 K was obtained. The adsorption process obeyed Langmuir isotherm. The adsorption mechanism involved both physisorption and chemisorption. Tafel and impedance studies showed results in agreement with the gravimetric method. Tafel plot indicates the inhibitor controlled both cathodic hydrogen evolution and anodic metal dissolution reactions. AC impedance study supports the increase in surface coverage of the metal surface by the inhibitor, forming a protective film. Further evidence comes from the surface characterization of the inhibited metal surface by contact angle measurement, SEM, EDAX spectra, and atomic force microscopic studies. DFT and Monte Carlo simulation studies showed a proper alignment with the experiment results. 2020 Elsevier B.V.
- Source
- Journal of Molecular Liquids, Vol-320
- Date
- 2020-01-01
- Publisher
- Elsevier B.V.
- Subject
- Contact angle measurement; Corrosion inhibitor; Density functional theory; Monte Carlo simulation; SLS surfactant; Zeta potential
- Coverage
- Jessima S.J.H.M., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, 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; Srikandan S.S., Department of Applied Science, PSG College of Technology, Peelamedu, Coimbatore, 641004, India; Subhashini S., Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women (Deemed to be University), Coimbatore, 641043, India
- Rights
- Restricted Access
- Relation
- ISSN: 1677322; CODEN: JMLID
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Jessima S.J.H.M.; Berisha A.; Srikandan S.S.; Subhashini S., “Preparation, characterization, and evaluation of corrosion inhibition efficiency of sodium lauryl sulfate modified chitosan for mild steel in the acid pickling process,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 23, 2025, https://archives.christuniversity.in/items/show/16151.