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AuthorKhan A.
AuthorSliem M.H.
AuthorArif A.
AuthorSalih M.A.
AuthorShakoor R.A.
AuthorMontemor M.F.
AuthorKahraman R.
AuthorMansour S.
AuthorAbdullah A.M.
AuthorHasan A.
Available date2020-04-01T06:59:42Z
Publication Date2019
Publication NameProgress in Organic Coatings
ResourceScopus
ISSN3009440
URIhttp://dx.doi.org/10.1016/j.porgcoat.2019.105319
URIhttp://hdl.handle.net/10576/13671
AbstractThis work reports the synthesis of polyelectrolyte microcapsules and its effect on the anti-corrosion performance of polymeric coating applied on steel substrates. In situ polymerization technique was used for the synthesis of monolayered urea formaldehyde microcapsules loaded with linalyl acetate (MLMCs). These capsules can be broken upon mechanical stress, such as scratches or other forms of mechanical damage. To enhance corrosion protection, Phenylthiourea (PTU), a molecule sensitive to pH, was loaded between consecutive polyelectrolytes layers of polyethylenimine (PEI) and sulfonated polyether ether ketone (SPEEK) build on the surface of MLMCs using the layer by layer technique. This polyelectrolyte layered microcapsules (PMCs) carry linalyl acetate in its core and phenylthiourea entrapped between the outer layers. Both MLMCs and PMCs, in concentration of 6 wt%, were dispersed in the epoxy resin and the resulting formulation was used to coat steel plates. Experimental findings showed that epoxy coatings reinforced with PMCs demonstrate better thermal, self-healing and anti-corrosion properties. This improved performance can be attributed to the release of polymer healing and corrosion inhibiting species from the PMCs. The epoxy coatings modified with PMCs can serve as self healing coating for corrosion protection of steel parts used, for example, in the oil and gas industry. - 2019 Elsevier B.V.
SponsorThis publication was made possible by NPRP Grant 9–080-2-039from Qatar National Research Fund (a member of the QatarFoundation). Statements made herein are solely the responsibility of theauthors. R. A. Shakoor would like to acknowledge thefinancial supportof QU internal grant-QUCG-CAM-2018/2019-3 and the Core Labs,QEERI for their SEM and TEM imaging. M.F. Montemor thanksFundação para a Ciência e a Tecnologia (FCT, Portugal) forfinancialsupport under the projects PEst-OE/QUI/UI0100/2019.
Languageen
PublisherElsevier B.V.
SubjectCoating
Corrosion inhibitor
Phenylthiourea
Polyelectrolytes
Self-healing
Urea formaldehyde microcapsules
TitleDesigning and performance evaluation of polyelectrolyte multilayered composite smart coatings
TypeArticle
Volume Number137
dc.accessType Abstract Only


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