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AuthorNawaz, Muddasir
AuthorRadwan, A. Bahgat
AuthorKalambate, Pramod K.
AuthorLaiwattanapaisal, Wanida
AuthorUbaid, Fareeha
AuthorAkbar, Himyan M.
AuthorShakoor, R. A.
AuthorKahraman, Ramazan
Available date2023-02-15T10:16:35Z
Publication Date2022
Publication NameACS Omega
ResourceScopus
URIhttp://dx.doi.org/10.1021/acsomega.2c01508
URIhttp://hdl.handle.net/10576/40099
AbstractCorrosion is a significant problem and is, to a large extent, responsible for the degradation of metallic parts. In this direction, mesoporous silica particles (MSPs) were synthesized by a sol–gel technique and had an average pore diameter of ∼6.82 nm. The MSPs were loaded with polyethyleneimine (PEI) and epoxy monomers and, after that, carefully mixed into the epoxy matrix to formulate new modified polymeric coatings. The microstructural, compositional, structural, and thermal properties were investigated using various characterizing tools [Transmission electron microscopy, Fourier transform infrared spectroscopy, hermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy]. TGA confirms the loading of mesoporous silica with a corrosion inhibitor, and its estimated loading amount is ∼8%. The electrochemical impedance spectroscopy properties of the reference and modified coated samples confirm the promising anti-corrosive performance of the synthesized polymeric smart coatings. Localized electrochemical tests (scanning vibrating electrode technique and scanning ion-selective electrode technique) evidence the corrosion inhibition ability of the coating, and its self-healing was also observed during 24 h of immersion. The decent anti-corrosion performance of the modified coatings can be credited to the efficient synergistic effect of the PEI and epoxy monomer.
SponsorThis work was performed with NPRP grant 11S-1226-170132 from the Qatar National Research Fund (a member of the Qatar Foundation). R. A. Shakoor would like to acknowledge the Core Laboratories, QEERI, for their TEM and SEM imaging. In addition, the authors acknowledge Prof. M. F. Montemor and Dr. M. G. Taryba (Instituto Superior Técnico) for conducting SVET and SEIT tests. The publication of this article was funded by Qatar National Library. Statements made herein are solely the responsibility of the authors.
Languageen
PublisherAmerican Chemical Society
SubjectCorrosion Protection
Salt Spray Tests
Layered Double Hydroxides
TitleSynergistic Behavior of Polyethyleneimine and Epoxy Monomers Loaded in Mesoporous Silica as a Corrosion-Resistant Self-Healing Epoxy Coating
TypeArticle
Pagination31700-31712
Issue Number36
Volume Number7
dc.accessType Open Access


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