Titanate–polyurethane–chitosan ternary nanocomposite as an efficient coating for steel against corrosion

In this study, a titanate–polyurethane–chitosan ternary nanocomposite was prepared by physical mixing. Sodium titanate nanotubes (Na-TNTs) were prepared by the hydrothermal method, and chitosan was extracted from shrimp shell. Na-TNTs were mixed with polyurethane (PU) of different ratios by weight,...

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Bibliographic Details
Published in:Scientific reports 2024-12, Vol.14 (1), p.30562-15, Article 30562
Main Authors: Abdellatif, Ahmed S., Shahien, Mohammed, El-Saeed, Ashraf M., Zaki, Ayman H.
Format: Article
Language:English
Subjects:
639/301
639/925
Adhesion
Carbon steel
Chitosan
Corrosion
Corrosion resistance
Drop coating
Humanities and Social Sciences
Mechanical properties
Metals
multidisciplinary
Nanocomposites
Nanoparticles
Nanotechnology
Nanotubes
Polymer
Polyurethane
Protective coatings
Scanning electron microscopy
Science
Science (multidisciplinary)
Sodium
Steel alloys
Titanate
Titanium
Toxicity
Viscosity
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Summary:In this study, a titanate–polyurethane–chitosan ternary nanocomposite was prepared by physical mixing. Sodium titanate nanotubes (Na-TNTs) were prepared by the hydrothermal method, and chitosan was extracted from shrimp shell. Na-TNTs were mixed with polyurethane (PU) of different ratios by weight, and chitosan was added after optimization. All of the nanocomposite samples were characterized by field-emission scanning electron microscopy (FESEM), and the mechanical properties were investigated by abrasion, adhesion pull-off, impact resistance, and T-bending tests. The anticorrosion ability was tested by the salt spray method. The obtained results revealed that the binary composite of PU and 1.5% Na-TNTs exhibited remarkable anticorrosion activity among all the binary composites where the disbonded area 5% compared to blank PU 19% and adhesion 5.1 MPa compared to blank 3.5 MPa, while the ternary composite containing 4% chitosan exhibited the best anticorrosion activity where the disbonded area 2% and also exhibit better adhesion 7.9 MPa.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-81104-8