Preparation and electrochemical characterization of amoxicillin-doped cellulose acetate films for AA2024-T3 aluminum alloy coatings

► CA films with 2000 ppm of amoxicillin directly on the AA2024-T3 substrate, providing good anticorrosion properties. ► Synergistic effect obtained by doping the CA film with amoxicillin. ► Amoxicillin shows a inhibition action towards AA2024-T3 with acetic cure and using 1 min of deposition time. C...

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Bibliographic Details
Published in:Corrosion science 2011-04, Vol.53 (4), p.1571-1580
Main Authors: Tamborim, S.M., Dias, S.L.P., Silva, S.N., Dick, L.F.P., Azambuja, D.S.
Format: Article
Language:English
Subjects:
A. Alloy
Aluminum base alloys
Amoxicillin
Applied sciences
B. EIS
C. Interfaces
Capacitance
Cellulose acetate
Corrosion
Corrosion environments
Corrosion prevention
Cross-disciplinary physics: materials science
rheology
Deposition
Doping
Electrochemical impedance spectroscopy
Electrodes
Exact sciences and technology
Materials science
Metals. Metallurgy
Methods of deposition of films and coatings
film growth and epitaxy
Physics
Production techniques
Surface treatment
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Summary:► CA films with 2000 ppm of amoxicillin directly on the AA2024-T3 substrate, providing good anticorrosion properties. ► Synergistic effect obtained by doping the CA film with amoxicillin. ► Amoxicillin shows a inhibition action towards AA2024-T3 with acetic cure and using 1 min of deposition time. Cellulose acetate films doped with amoxicillin were deposited onto AA2024-T3 aluminum alloy and the corrosion protection in 0.05 M NaCl was evaluated by Electrochemical Impedance Spectroscopy (EIS) and the Scanning Vibrating Electrode Technique (SVET). The doping of the cellulose acetate film with amoxicillin resulted in a significant increase in the high frequency resistance and a decrease in the capacitance of the material. The protective effect could be observed under anodic polarization by way of a marked decrease in the anodic current. These results show the promising potential for the deposition of cellulose acetate films doped with amoxicillin onto AA2024-T3.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2011.01.034