Szczegóły publikacji
Opis bibliograficzny
Spectroscopic investigations of 316L stainless steel under simulated inflammatory conditions for implant applications: the effect of tryptophan as corrosion inhibitor/hydrophobicity marker / Dominika ŚWIĘCH, Gaetano PALUMBO, Natalia Piergies, Ewa Pięta, Aleksandra SZKUDLAREK, Czesława Paluszkiewicz // Coatings [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2079-6412. — 2021 — vol. 11 iss. 9 art. no. 1097, s. 1–14. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 11–14, Abstr. — Publikacja dostępna online od: 2021-09-11
Autorzy (6)
- AGHŚwięch Dominika
- AGHPalumbo Gaetano
- Piergies Natalia
- Pięta Ewa
- AGHSzkudlarek Aleksandra
- Paluszkiewicz Czesława
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 136310 |
|---|---|
| Data dodania do BaDAP | 2021-09-22 |
| Tekst źródłowy | URL |
| DOI | 10.3390/coatings11091097 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Coatings |
Abstract
In this paper, the conformational changes of tryptophan (Trp) on the corroded 316 L stainless steel (SS) surface obtained under controlled simulated inflammatory conditions have been studied by Raman (RS) and Fourier-transform infrared (FT-IR) spectroscopy methods. The corrosion behavior and protective efficiency of the investigated samples were performed using the potentiodynamic polarization (PDP) technique in phosphate-buffered saline (PBS) solution acidified to pH 3.0 at 37 °C in the presence and absence of 10−2 M Trp, with different immersion times (2 h and 24 h). The amino acid is adsorbed onto the corroded SS surface mainly through the lone electron pair of the nitrogen atom of the indole ring, which adopts a more/less tilted orientation, and the protonated amine group. The visible differences in the intensity of the Fermi doublet upon adsorption of Trp onto the corroded SS surface, which is a sensitive marker of the local environment, suggested that a stronger hydrophobic environment is observed. This may result in an improvement of the corrosion resistance, after 2 h than 24 h of exposure time. The electrochemical results confirm this statement—the inhibition efficiency of Trp, acting as a mixed-type inhibitor, is made drastically higher after a short period of immersion.
