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Facile preparation of super-oleophobic TiO2/SiO2 composite coatings by spraying method.
- Source :
-
Progress in Organic Coatings . Oct2021, Vol. 159, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- Re-entrant geometries can effectively trap air pockets, increase air/liquid interface fraction, prevent the penetration of low surface tension organic liquids, and achieve super-oleophobic performance. However, the creation of re-entrant geometries usually involving expensive lithographic tools, or complicated chemical procedures, and cannot be applied on a large scale, such super-oleophobic surfaces are unsuitable for practical application. Constructing hierarchical micro/nanostructure on substrates is a feasible solution to achieve super-oleophobicity through facile spraying method. Herein, we report a super-oleophobic TiO 2 /SiO 2 composite coatings by taking advantage of an exceedingly simple spraying method. The dendritic structures produced by spraying the TiO 2 /SiO 2 mixture play the critical role in obtaining the re-entrant geometry required for oleophobic surface, and the introduction of micron-scale TiO 2 particles and nano-scale SiO 2 particles provide an enough dual-scale rough structure for the coating. The TiO 2 /SiO 2 composite coatings exhibit superior repellence to high and low surface tension liquids as well long-term durability. This design strategy may provide useful guidelines for the fabrication of particle-based spray-coated super-oleophobic surfaces. • The coatings exhibit superior repellence to high and low surface tension liquids as well long-term durability. • The method is simple and practical. • This design strategy may provide useful guidelines for the fabrication of particle-based spray-coated super-oleophobic surfaces. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03009440
- Volume :
- 159
- Database :
- Academic Search Index
- Journal :
- Progress in Organic Coatings
- Publication Type :
- Academic Journal
- Accession number :
- 152231897
- Full Text :
- https://doi.org/10.1016/j.porgcoat.2021.106411