Electrophoretic deposition of nanostructured-TiO2/chitosan composite coatings on stainless steel

Cordero Arias LE, Cabanas Polo S, Gao H, Gilabert J, Sanchez E, Roether J, Schubert DW, Virtanen S, Boccaccini AR (2013)

Publication Language: English

Publication Type: Journal article, Review article

Publication year: 2013

Journal

Publisher: Royal Society of Chemistry

Book Volume: 3

Pages Range: 11247-11254

Journal Issue: 28

DOI: 10.1039/c3ra40535d

Abstract

Novel chitosan composite coatings containing titania nanoparticles (n-TiO₂) for biomedical applications were developed by electrophoretic deposition (EPD) from ethanol–water suspensions. The optimal ethanol–water ratio was studied in order to avoid bubble formation during the EPD process and to ensure homogeneous coatings. Different n-TiO₂ contents (0.5–10 g L⁻¹) were studied for a fixed chitosan concentration (0.5 g L⁻¹) and the properties of the electrophoretic coatings obtained were characterized. Coating composition was analyzed by thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analysis. Scanning electron microscopy (SEM) was employed to study both the surface and the cross section morphology of the coatings, and the thicknesses (2–6 μm) of the obtained coatings were correlated with the initial ceramic content. Contact angle measurements, as a preliminary study to predict hypothetic protein attachment on the coatings, were performed for different samples and the influence of a second chitosan layer on top of the coatings was also tested. Finally, the electrochemical behavior of the coatings, evaluated by polarization curves in DMEM at 37 °C, was studied in order to assess the corrosion resistance provided by the n-TiO₂/chitosan coatings.

Authors with CRIS profile

Involved external institutions

Imperial College London / The Imperial College of Science, Technology and Medicine United Kingdom (GB) Universitat Jaume I (UJI) Spain (ES)

How to cite

APA:

Cordero Arias, L.E., Cabanas Polo, S., Gao, H., Gilabert, J., Sanchez, E., Roether, J.,... Boccaccini, A.R. (2013). Electrophoretic deposition of nanostructured-TiO2/chitosan composite coatings on stainless steel. RSC Advances, 3(28), 11247-11254. https://doi.org/10.1039/c3ra40535d

MLA:

Cordero Arias, Luis Eduardo, et al. "Electrophoretic deposition of nanostructured-TiO2/chitosan composite coatings on stainless steel." RSC Advances 3.28 (2013): 11247-11254.

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