| Autor: |
Ahmadi, Hanie, Ghamsarizade, Reza, Haddadi-Asl, Vahid, Eivaz Mohammadloo, Hossein, Ramezanzadeh, Bahram |
| Předmět: |
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| Zdroj: |
Journal of Industrial & Engineering Chemistry; Dec2022, Vol. 116, p556-571, 16p |
| Abstrakt: |
[Display omitted] To overcome the magnesium's high corrosion rate issue, triple polyvinylalcohol (PVA) coatings containing hydroxyapatite (HA) and 8-hydroxyquinoline (8-HQ) were prepared by two different methods of electrospinning and immersion. The formation of HA and Mg(8-HQ) 2 layers during exposure to a corrosive medium was indicated by X-ray diffraction (XRD) and fluorescent images, respectively. Results showed that the electrospinning coating containing HA and 8-HQ, revealed a significant anti-corrosion performance (R ct = 7891, and 12,680 ohm cm2 in NaCl 3.5 wt.%, and simulated body fluid (SBF), respectively) compared to the same composition immersion samples (R ct = 3231, and 3727 ohm cm2). The increment in anti-corrosion performance is caused by the release of HA and 8-HQ from the nanofibers. The problem of bacterial infections in magnesium implants has been improved (reduction in bacterial-growth percentage = 90% in coating prepared by electrospinning method) by cleverly designing the triple coating containing 8-HQ as an anti-bacterial compound. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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