High Efficiency Fluorinated Oligo(ethylenesuccinamide) Coating for Stone
| Autor: | Camaiti M.[1], Bortolotti V.[2], Cao Y.[1, Papacchini A.[4], Salvini A.[4], Brizi L.[5 |
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| Přispěvatelé: | Camaiti M., Bortolotti V., Cao Y., Papacchini A., Salvini A., Brizi L. |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
perfluoropolyethers
Materials science Absorption of water stone protection Sorptivity photo-stability sorptivity engineering.material Thermal diffusivity Coating Materials Chemistry magnetic resonance imaging Volatile organic compound oligo(ethylensuccinamide) Porosity chemistry.chemical_classification cultural heritage magnetic resonance relaxometry Surfaces and Interfaces Environmentally friendly Surfaces Coatings and Films Chemical engineering chemistry lcsh:TA1-2040 engineering Wetting lcsh:Engineering (General). Civil engineering (General) Perfluoropolyether |
| Zdroj: | Coatings Volume 11 Issue 4 Coatings, Vol 11, Iss 452, p 452 (2021) Coatings (Basel) 11 (2021): 1–21. doi:10.3390/coatings11040452 info:cnr-pdr/source/autori:Camaiti M.[1], Bortolotti V.[2], Cao Y.[1,3], Papacchini A.[4], Salvini A.[4], Brizi L.[5,6]/titolo:High Efficiency Fluorinated Oligo(ethylenesuccinamide) Coating for Stone/doi:10.3390%2Fcoatings11040452/rivista:Coatings (Basel)/anno:2021/pagina_da:1/pagina_a:21/intervallo_pagine:1–21/volume:11 |
| ISSN: | 2079-6412 |
| DOI: | 10.3390/coatings11040452 |
| Popis: | The protection of stone cultural assets is related to the transformation of the surface characteristic from hydrophilic to hydrophobic/superhydrophobic through the application of a coating. The suitability of a coating depends not only on its capability to dramatically change the surface wettability, but also on other parameters such as the modification of kinetics of water absorption, the permanence of vapor diffusivity, the resistance of the coating to aging and the low volatile organic compound emissions during its application. In this work, an oligo(ethylensuccinamide) containing low molecular pendant perfluoropolyether segments (SC2-PFPE) and soluble in environmentally friendly solvents was tested as a protective agent for historic stone artifacts. Magnetic resonance imaging and relaxometry were employed to evaluate the effects of the surface wettability change, to follow the water diffusion inside the rock and to study the porous structure evolution after the application of SC2-PFPE. A sun-like irradiation test was used to investigate the photo-stability of the product. The results demonstrate that the highly photo-stable SC2-PFPE minimizes the surface wettability of the stone by modifying the water sorptivity without significantly affecting its porous structure and vapor diffusivity. The improved performance of SC2-PFPE in comparison to other traditional coatings makes it a potential candidate as an advanced coating for stone cultural heritage protection. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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