Статья

Designing of phosphorous based highly functional dendrimeric macromolecular resin as an effective coating material for carbon steel in <scp>NaCl</scp>: Computational and experimental studies

Omar DagdagLaboratory of Industrial Technologies and Services (EMEL), Department of Process Engineering Height School of Technology, Sidi Mohammed Ben Abdallah University Fez MoroccoAhmed El HarfiLaboratory of Advanced Materials and Process Engineering, Department of Chemistry, Faculty of Science Ibn Tofail University Kenitra MoroccoLahoucine El GanaLaboratory of Optoelectronics, Physical Chemistry of Materials and Environment, Department of Physics, Faculty of Science Ibn Tofail University Kenitra MoroccoZaki SafiChemistry Department, Faculty of Science Al Azhar University‐Gaza Gaza PalestineLei GuoSchool of Materials and Chemical Engineering Tongren University Tongren ChinaАвни БеришаDepartment of Chemistry, Faculty of Natural and Mathematics Science University of Prishtina Prishtina KosovoChandrabhan VermaCenter of Research Excellence in Corrosion, Research Institute King Fahd University of Petroleum and Minerals Dhahran Saudi ArabiaEno E. EbensoDepartment of Chemistry, College of Science, Engineering and Technology University of South Africa Florida, Roodepoort South AfricaNuha WazzanChemistry Department, Faculty of Science King Abdulaziz University Jeddah Saudi ArabiaM. El GouriLaboratory of Industrial Technologies and Services (EMEL), Department of Process Engineering Height School of Technology, Sidi Mohammed Ben Abdallah University Fez Morocco

2020en

ABI

Аннотация

Abstract Objective of this study is to develop a highly effective and durable phosphorus based epoxy resin as anticorrosive coating material for carbon steel in 3% NaCl medium. The hexaglycidyl N , N ′, N ″‐tris (4,4′‐ethylene dianiline) phosphoramide (HGTEDPA) was characterized using spectral methods. The anticorrosive formulation (HGTEDPA‐MDA) was synthesized using HGTEDPA curing with 4,4′‐methylenedianiline (MDA). The formulation (HGTEDPA‐MDA) coated steel specimens were exposed to UV radiation for a specific durable (189 days) and durability of the formulation was tested along with its inhibition effectiveness. The anticorrosive property of the formulation was evaluated using electrochemical (electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP)) methods. Results showed that HGTEDPA‐MDA coating improved the corrosion resistance value even after exposing 180 days to the UV radiation. PDP study suggested that HGTEDPA‐MDA before and after UV radiations acted as mainly anodic and cathodic type of inhibitor, respectively. The EIS and PDP results were corroborated with density functional theory (DFT) and molecular dynamic simulations (MDS) methods and a reasonable good agreement was observed. DFT study revealed that HGTEDPA‐MDA interacts with the metallic surface using donor–acceptor interactions. MDS study revealed that HGTEDPA‐MDA spontaneously interacts with steel surface and adsorb using horizontal orientation.

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Идентификаторы

DOI: 10.1002/app.49673

Цитирования и источники

Цитирований: 4Использованных источников: 0

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