Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination / Zhen Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 967-975 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 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23605	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 1 / 1)