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Anticorrosion properties of Thymus munbyanus Boiss & Reut


 
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1. Title Title of document Anticorrosion properties of Thymus munbyanus Boiss & Reut
 
2. Creator Author's name, affiliation, country M. OUKNIN, A. ROMANE, J. Costa, P. PONTHIAUX, L. MAJIDI; 1Laboratory of Natural Substances & Synthesis and Molecular Dynamics, Faculty of Sciences and Techniques, Moulay Ismail University, 52000 Errachidia, Morocco. 2Laboratory of Applied Chemistry, Faculty of Sciences Semlalia BP. 2390, Cadi Ayyad University, Marrakech, Morocco. 3Laboratory of Chemistry of Natural Products, UMR CNRS 6134, Faculty of Sciences and Techniques, University of Corse, Corse, France. 4Centrale-Supélec, Grande Voie des Vignes, Châtenay-Malabry, France *Corresponding author: lmajidi@yahoo.fr Abstract; Morocco
 
3. Subject Discipline(s)
 
3. Subject Keyword(s) Essential oil, Thymus munbyanus, GC/MS, Anticorrosion activity.
 
4. Description Abstract

 

 

The analysis of essential oil of Thymus munbyanus Boiss & Reut (TM oil) by GC and led to the identification of 32 components accounting for (97.8%) of the total oils were identified. The main compounds of essential oils of Thymus munbyanus were carvacrol (31.7%), g-terpinene (21.9%), p-cymene (14.7%), thymol (7.6%), linalool (4.3%), borneol (3.9%) and α-terpinene (2.1%). The inhibitive effect of TM oil on the corrosion of mild steel in 1M HCl solution has been investigated by weight loss measurement as well as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The corrosion rate calculated by polarization potentiodynamic curves obtained after 30min from immersion in 1M HCl medium. The gravimetric results indicate that TM oil exhibited good inhibition efficiency in 1M HCl solution. The polarization measurements showed that the studied inhibitor is a mixed type with a significant reduction of cathodic and anodic current densities. Electrochemical impedance spectroscopy measurements revealed that the charge transfer resistance increased by increasing the essential oil concentration, which suggests Langmuir isotherm model as a most suitable adsorption mechanism.

 
 
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6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 30-07-2018
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://revues.imist.ma/index.php/morjchem/article/view/11024
 
10. Identifier Digital Object Identifier (DOI) https://doi.org/10.48317/IMIST.PRSM/morjchem-v6i3.11024
 
11. Source Title; vol., no. (year) Moroccan Journal of Chemistry; Vol 6, No 3 (2018)
 
12. Language English=en en
 
13. Relation Supp. Files
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
 
15. Rights Copyright and permissions Copyright (c) 2018 Moroccan Journal of Chemistry