One-step Fabrication of Robust and Durable Superamphiphobic, Self-cleaning Surface for Outdoor and in Situ Application on Various Building Substrates
| Autor: | Cao Y.[1, Salvini A.[3], Camaiti M.[2] |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fabrication
Materials science 02 engineering and technology Surface finish engineering.material 010402 general chemistry 01 natural sciences Biomaterials Contact angle Colloid and Surface Chemistry Coating Superamphiphobicity Surface roughness Deposition (phase transition) Artificial stone Lotus effect Composite material Robustness In-situ 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Building protection Outdoor application engineering 3-perfluroether-amidopropylsilane 0210 nano-technology Self-cleaning |
| Zdroj: | Journal of colloid and interface science 591 (2021): 239–252. doi:10.1016/j.jcis.2021.02.001 info:cnr-pdr/source/autori:Cao Y.[1,2], Salvini A.[3], Camaiti M.[2]/titolo:One-step Fabrication of Robust and Durable Superamphiphobic, Self-cleaning Surface for Outdoor and in Situ Application on Various Building Substrates/doi:10.1016%2Fj.jcis.2021.02.001/rivista:Journal of colloid and interface science (Print)/anno:2021/pagina_da:239/pagina_a:252/intervallo_pagine:239–252/volume:591 |
| DOI: | 10.1016/j.jcis.2021.02.001 |
| Popis: | Hypothesis: Water and oil inhibition treatment is essential for protecting natural and artificial stone surfaces. Bioinspired super-antiwetting surfaces with ''lotus effect", together with superoleophobic properties, can be achieved combining very low-surface-energy materials and suitable surface roughness. Exploiting the natural roughness of stone surfaces, the simple and inexpensive fabrication of superamphiphobic surfaces through the coating dispersion deposition is expected. It seems the ideal method for the safeguard of contemporary and historical constructions, since the physical, chemical and aesthetic properties can be maintained. Experiments: The new coating agent (3-perfluroether-amidopropylsilane) was synthesized via one-step amidation. Hydrophobicity, robustness and environmental durability were systematically studied on stone surfaces through several tests: contact angle (CA), contact angle hysteresis (CAH), water inhibition efficiency, vapor diffusivity, chemical and mechanical resistance, artificial and field-exposure ageing. Findings: The as-prepared coating demonstrated superamphiphobicity (oil and water CA > 150 with CAH < 10) on stones with low and high porosity. Moreover, it manifested very high water inhibition efficacy while maintaining high vapor diffusivity and aesthetic properties of substrates. The superhydrophobic coating showed good robustness towards corrosive chemical agents, peeling, mechanical abrasion, water immersion and environmental weathering, thereby permitting various outdoor applications, including stone protection in rainy regions where acid rain is also present. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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