Artículos de revistas
Sol-gel coatings doped with encapsulated silver nanoparticles: Inhibition of biocorrosion on 2024-T3 aluminum alloy promoted by Pseudomonas aeruginosa
Fecha
2019Registro en:
Journal of Materials Research and Technology, Volumen 8, Issue 2, 2019, Pages 1809-1818
22387854
10.1016/j.jmrt.2018.12.011
Autor
González, E. A.
Leiva, N.
Vejar, N.
Sancy, M.
Gulppi, M.
Azócar, M. I.
Gomez, G.
Tamayo, Laura
Zhou, X.
Thompson, G. E.
Páez, M. A.
Institución
Resumen
Silanol type hybrid polymers modified with silver nanoparticles encapsulated with SiO2 for biocorrosion protection of 2024-T3 aluminum alloy were studied through electrochemical characterization and surface analysis techniques. Two different encapsulated silver nanoparticles were synthesized using tetraethoxysilane as a core shell. The hybrid polymer was prepared by the sol-gel technique by mixing tetraethoxysilane and triethyl(octyl)silane in 1-propanol, followed by the incorporation of silver nanoparticles or encapsulated silver nanoparticles. Relatively uniform coatings were observed by a scanning electron microscopy analysis. Transmission electron microscopy and dynamic light scattering results indicated that the diameter of the silver nanoparticles was around 20 nm, whereas the encapsulated silver nanoparticles presented diameters between 24 and 30 nm. The viability results showed t