[article]
| Titre : |
Ag NPs deposited TiO2 coating material for superhydrophobic, antimicrobial and self-cleaning surface fabrication on fabric |
| Type de document : |
texte imprimé |
| Auteurs : |
Hakan Görgülüer, Auteur ; Bekir Çakiroglu, Auteur ; Mahmut Özacar, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 569-579 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Antimicrobiens
Argent
Dioxyde de titane
Hydrophobie
Nanoparticules
PolydiméthylsiloxaneLe polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones.
Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone.
Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK).
La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones.
Revêtement auto-nettoyant
Sol-gel, Procédé
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In this study, a superhydrophobic titanium dioxide (TiO2)-poly(dimethylsiloxane) (PDMS)-silver nanoparticles (Ag NPs) coating was fabricated on fabrics via a simple dipping method with the versatile properties. Due to the combination of rough structure constructed by Ag NPs and the low-surface-energy of PDMS, the coated fabric exhibited superhydrophobicity. X-ray diffraction analysis verified the crystalline structure of rutile TiO2 and Ag NPs, which is suitable for the photocatalytic studies. According to the field emission scanning electron microscopy studies, surface roughness increased by improving the surface hydrophobicity upon Ag NPs deposition. The water contact angle (WCA) values were sequentially increased by incorporating TiO2, PDMS and Ag NPs into the coating composite, and the WCA value was estimated as 153° with a sliding angle of 15° for the superhydrophobic coating. Ag NPs demonstrated antibacterial activity against Escherichia coli and Staphylococcus aureus. The photocatalyst activity of TiO2 was reinforced by the formation of the Schottky barrier at the Ag NPs-TiO2 interface after the Ag NPs deposition, and TiO2 led to the photocatalytic degradation of methylene blue in solution. Furthermore, the modified textile was used to selectively separate oil–water mixtures. Thus, the coated fabric has great potential for applications in dye removal, oil separation, antibacterial and superhydrophobic coatings. Also, the coating material can be applied to other surfaces for the construction of superhydrophobic multifunctional surfaces in a low-cost way. |
| Note de contenu : |
- MATERIALS AND METHODS : Reagents - Pretreatment of fabrics for coating - Preparation of 5% TiO2 NPs solution - TiO2-PDMS-Ag NPs coating material preparation and fabric coating - Photocatalytic degradation of methylene blue by coated fabric - Antibacterial study of the fabric samples - Characterization of Photoelectrocatalytic Materials - Statistical analysis
- RESULTS AND DISCUSSION : Durability and stability of the superhydrophobic fabric - Kubelka–Munk functions of materials and photo-degradation of MB by TiO2-PDMS-Ag NPs coated fabric - Antimicrobial effect of Ag NPs decorated fabrics on E. coli and S. aureus - Oil–water separation property of coated textile |
| DOI : |
https://doi.org/10.1007/s11998-020-https://doi.org/10.1007/s11998-020-00412-6 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-020-00412-6.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35616 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 569-579
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