Electrophoretic deposition of ZnO/alginate and ZnO-bioactive glass/alginate composite coatings for antimicrobial applications
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Scholar |
Otros documentos de la autoría: Cordero Arias, L.; Cabañas Polo, Sandra; Goudouri, O. M.; Misrab, S.K.; Gilabert, Jessica; Valsami-Jones, E.; Sánchez-Vilches, Enrique; Virtanen, S.; Boccaccini, Aldo R.
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http://dx.doi.org/10.1016/j.msec.2015.05.034 |
Metadatos
Título
Electrophoretic deposition of ZnO/alginate and ZnO-bioactive glass/alginate composite coatings for antimicrobial applicationsAutoría
Fecha de publicación
2015Editor
ElsevierISSN
0928-4931Cita bibliográfica
CORDERO-ARIAS, L., et al. Electrophoretic deposition of ZnO/alginate and ZnO-bioactive glass/alginate composite coatings for antimicrobial applications. Materials Science and Engineering: C, 2015, vol. 55, p. 137-144.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0928493115300825Palabras clave / Materias
Resumen
Two organic/inorganic composite coatings based on alginate, as organic matrix, and zinc oxide nanoparticles (n-ZnO) with and without bioactive glass (BG), as inorganic components, intended for biomedical applications, ... [+]
Two organic/inorganic composite coatings based on alginate, as organic matrix, and zinc oxide nanoparticles (n-ZnO) with and without bioactive glass (BG), as inorganic components, intended for biomedical applications, were developed by electrophoretic deposition (EPD). Different n-ZnO (1–10 g/L) and BG (1–1.5 g/L) contents were studied for a fixed alginate concentration (2 g/L). The presence of n-ZnO was confirmed to impart antibacterial properties to the coatings against gram-negative bacteria Escherichia coli, while the BG induced the formation of hydroxyapatite on coating surfaces thereby imparting bioactivity, making the coating suitable for bone replacement applications. Coating composition was analyzed by thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS) analyses. Scanning electron microscopy (SEM) was employed to study both the surface and the cross section morphology of the coatings. Polarization curves of the coated substrates made in cell culture media at 37 °C confirmed the corrosion protection function of the novel organic/inorganic composite coatings. [-]
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Materials Science and Engineering: C, 2015, vol. 55Derechos de acceso
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