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Protection by a polymer composite on carbon steel surface in 1.0 M HCl environment: a combined experimental and theoretical approach
Nwanonenyi, S. C.1,2; Obasi, H. C.1,2; Udochukwu, M.2; Chidiebere, M. A.2; Njoku, D. I.2,3; Oguzie, E.2
Corresponding AuthorNwanonenyi, S. C.(nwanonenyi.simeon@futo.edu.ng)
2021-11-25
Source PublicationBRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
ISSN0104-6632
Pages15
AbstractThe protection impact of hydroxyethyl cellulose, HEC and polyacrylic acid, PAA mixtures (at different proportions and concentrations respectively) on a carbon steel surface induced in 1.0 M HCl environment was investigated at 30-60 degrees C using experimental and theoretical studies. On an individual basis, HEC and PAA exhibited moderate performance, respectively, whereas HEC/PAA mixtures at the maximum inhibitor concentration produced near excellent inhibition results according to gasometric results. Also, inhibition effectiveness was sensitive to concentration, mixing proportion, time and temperature, and the order of effectiveness recorded was as follows: HEC/PAA > HEC > PAA. The temperature and inhibition efficiency relation observed supported physical adsorption, while adsorption studies followed a Langmuir isotherm. Results for Gibb's free energy confirmed the feasibility and the spontaneity of electrochemical reaction process. Results of activation energy and heat of adsorption respectively supported physical adsorption and the HEC/PAA (4:1) system functioned as a mixed-type inhibitor as recorded in polarization results. The surface analysis (via scanning electron microscopy, SEM) results on metal exposed to test solutions supported the evidence of adsorption inhibition. In addition, computational studies provided the structural descriptors of the repeat unit of the inhibitor molecules for accurate interpretation of their chemical reactivities. Also, molecular dynamics simulations were used as a theoretical basis to explain the real experimental reactions of the corrosion and inhibition processes.
KeywordPolymer composite hydroxyethyl cellulose Polyacrylic acid Inhibition performance Adsorption
Funding OrganizationWorld Bank Africa Centres of Excellence for Impact (ACE Impact) project
DOI10.1007/s43153-021-00187-2
Indexed BySCI
Language英语
Funding ProjectWorld Bank Africa Centres of Excellence for Impact (ACE Impact) project[NUC/EC/507/1/304]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000722503900001
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/167497
Collection中国科学院金属研究所
Corresponding AuthorNwanonenyi, S. C.
Affiliation1.Fed Univ Technol Owerri, Dept Polymer & Text Engn, PMB 1526, Owerri, Imo, Nigeria
2.Fed Univ Technol Owerri, Africa Ctr Excellence Future Energies & Electroch, PMB 1526, Owerri, Imo, Nigeria
3.Chinese Acad Sci, Inst Met Res, 62 Wencui Rd, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Nwanonenyi, S. C.,Obasi, H. C.,Udochukwu, M.,et al. Protection by a polymer composite on carbon steel surface in 1.0 M HCl environment: a combined experimental and theoretical approach[J]. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING,2021:15.
APA Nwanonenyi, S. C.,Obasi, H. C.,Udochukwu, M.,Chidiebere, M. A.,Njoku, D. I.,&Oguzie, E..(2021).Protection by a polymer composite on carbon steel surface in 1.0 M HCl environment: a combined experimental and theoretical approach.BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING,15.
MLA Nwanonenyi, S. C.,et al."Protection by a polymer composite on carbon steel surface in 1.0 M HCl environment: a combined experimental and theoretical approach".BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING (2021):15.
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