Improvement of biological and corrosion behavior of 316 L stainless steel using PDMS-Ag doped Willemite nanocomposite coating

This study aimed to improve the biological properties and corrosion resistance of 316 L stainless steel substrate using polydimethylsiloxane (PDMS)‑silver doped Willemite nanocomposite coating. For this purpose, Ag-doped Willemite nanoparticles (NPs) were synthesized by the sol-gel method initially....

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Bibliographic Details
Published in:Progress in organic coatings 2022-04, Vol.165, p.106733, Article 106733
Main Authors: Nasiriardali, Mahdieh, Boroujeny, Behrooz Shayegh, Doostmohammadi, Ali, Nazari, Hassan, Akbari, Ehsan
Format: Article
Language:English
Subjects:
Adhesive strength
Ag-doped Willemite
Antibacterial activity
Austenitic stainless steels
Bacterial corrosion
Biocompatibility
Biological properties
Corrosion behavior
Corrosion resistance
Corrosion resistant steels
Hydrophobicity
Nanocomposite coating
Nanocomposites
Nanoparticles
Polydimethylsiloxane
Protective coatings
Silver
Sol-gel processes
Stainless steel
Stem cells
Substrates
Surface roughness
Zinc silicates
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Summary:This study aimed to improve the biological properties and corrosion resistance of 316 L stainless steel substrate using polydimethylsiloxane (PDMS)‑silver doped Willemite nanocomposite coating. For this purpose, Ag-doped Willemite nanoparticles (NPs) were synthesized by the sol-gel method initially. Then, PDMS-Ag-doped Willemite nanocomposite coatings with various nanoparticles content were coated on the substrates using an immersion technique. The antibacterial results showed that Willemite NPs containing 5 wt% Ag possessed the highest antibacterial activity than the other samples. The examination of microstructure, hydrophobicity, adhesion strength, corrosion resistance, and biological characteristics of the coatings revealed that the addition of NPs up to 3 wt% enhances the surface roughness, hydrophobicity and coating adhesion. However, at concentrations greater than 3 wt% NPs, the coating's corrosion resistance is reduced owing to the formation of larger agglomerates and induced cracks in the coating. The presence of NPs in the coating promotes the adhesion and viability of bovine mesenchymal stem cells (bMSCs). •Fabrication of Ag-doped Willemite nanoparticles using sol-gel method.•Implementing PDMS-Ag-doped Willemite nanocomposite coatings in various concentrations of NPs on the 316 L stainless steel.•Examination of the composite coatings by FE-SEM, EDX, elemental mapping, XRD, FT-IR, hydrophobicity, adhesion strength, EIS and antibacterial analyses.•PDMS-Ag-doped Willemite nanocomposite coating with desirable biological characteristics and corrosion resistance can be regarded as a functional coating for bone-implant interfaces.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2022.106733