Facile design of 'sticky' near superamphiphobic surfaces on highly porous substrate
| Autor: | Cao Y.[1, Salvini A.[2], Camaiti M.[1] |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Capillary action Surface treatment 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Contact angle Coating Superhydrophobic effect Perfluoropolyethers lcsh:TA401-492 General Materials Science Near superoleophobic effect Porosity Mechanical Engineering Substrate (chemistry) Oligo(ethylenesuberamide) High water adhesive force Adhesion 021001 nanoscience & nanotechnology 0104 chemical sciences Hysteresis Chemical engineering Mechanics of Materials engineering Surface modification lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology |
| Zdroj: | Materials & design 153 (2018): 139–152. doi:10.1016/j.matdes.2018.04.063 info:cnr-pdr/source/autori:Cao Y.[1,2], Salvini A.[2], Camaiti M.[1]/titolo:Facile design of "sticky" near superamphiphobic surfaces on highly porous substrate/doi:10.1016%2Fj.matdes.2018.04.063/rivista:Materials & design/anno:2018/pagina_da:139/pagina_a:152/intervallo_pagine:139–152/volume:153 Materials & Design, Vol 153, Iss, Pp 139-152 (2018) |
| DOI: | 10.1016/j.matdes.2018.04.063 |
| Popis: | Several “sticky” near superamphiphobic surfaces were fabricated on naturally porous and rough substrate by simply deposing oligoamides solutions, needless of surface modification or integrating nano-materials. These surfaces exhibit very high water and oil contact angles (CA) (water CA > 150°, oil CA > 140°) together with high sliding angles (>90°). The nanomaterial-free coating compounds are well-defined, homologous partially fluorinated oligoamides (synthesized via condensation reactions) which have consistent but slightly varied properties, in terms of CA and CA hysteresis. These surfaces show very high adhesion force to water droplets; in essence, the strong adhesion force is owing to the combination of capillary force derived from newly generated micro-porosity of substrate and the interaction between amidic groups of coating and water molecules. Besides, they exhibit high stability and durability after water immersion test. This approach may provoke new ideas for creating superamphiphobic surfaces with special adhesion properties on porous substrates. Moreover, these materials could also be potentially employed as water repellents for porous building materials, since they are easy to handle and soluble in environmentally benign solvents. In addition to very high water inhibition efficiency, they manifest high residual vapor permeability and preserve the physical characteristics, i.e. vapor diffusivity and chromatic features, of substrate. Keywords: Superhydrophobic effect, Near superoleophobic effect, High water adhesive force, Surface treatment, Oligo(ethylenesuberamide), Perfluoropolyethers |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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