| Titre : |
Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination |
| Type de document : |
texte imprimé |
| Auteurs : |
Zhen Wang, Auteur ; Bing Ren, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 967-975 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Caractérisation
Chimie des surfaces
Dispositifs médicaux
Fluoroalkylsilane
Hydrophobie
Implants médicaux
Infections nosocomiales
Mouillabilité
Revêtements -- Emploi en thérapeutique
Titane
Traîtements de surface
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Adhesion of bacteria and platelets on blood-contact implants and surgical devices is one of the causes of infections and thrombus. A superhydrophobic surface serving as a protective layer can minimize adhesion and contamination due to the low surface energy. The objective of this paper is to construct a superhydrophobic surface on a titanium implant by a combination of a topological structure and chemical coating. First, a micro/nano hierarchical morphology is obtained by sandblasting, acid-etching, and anodic oxidation. Then, a low surface energy coating material (fluoroalkylsilane, as the example case in this study) is used to modify the surface further. The effects of the morphology of micro and/or nanoscales and corresponding fluorination on the wettability are investigated. The results show that a hierarchical surface with microroughness and nanotubes is successfully constructed, and the contact angle (CA) is 44.9°, indicating good hydrophilicity. Interestingly, after being modified by fluoroalkylsilane, the surface converted from hydrophilic to superhydrophobic with a CA of 151.4°. In contrast, the fluorination modification of single micro or nanofeatures cannot achieve superhydrophobicity, indicating that the micro/nanostructures may show a synergistic effect for an efficient fluorination coating later on. Overall, our results demonstrate the feasibility of achieving a superhydrophobic surface via the micro/nano topological patterning and fluorination modification. The proposed method is expected to enrich the preparation technologies of superhydrophobic titanium surfaces. |
| Note de contenu : |
- MATERIALS AND METHODS : Anodic oxidation parameter settings - Construction of micro/nano hierarchical structures - Fluoroalkylsilane (FAS) modification - Surface characterization
- RESULTS : Effects of electrolyte and voltage during anodic oxidation - Surface morphology - Chemical composition - Surface wettability |
| DOI : |
https://doi.org/10.1007/s11998-021-00576-9 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-021-00576-9.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38090 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 967-975
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Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
