Sustainable, Fluorine-Free, Low Cost and Easily Processable Materials for Hydrophobic Coatings on Flexible Plastic Substrates
| Autor: | Paolo Tassini, Paola Manini, C. T. Prontera, Giuliano Sico, Maria Montanino, Maria Grazia Maglione, Anna De Girolamo Del Mauro, Carla Minarini |
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| Přispěvatelé: | Prontera, C. T., Sico, G., Montanino, M., Del Mauro, A. G., Tassini, P., Maglione, M. G., Minarini, C., Manini, P. |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Green processing Hydrophobic coating Water vapor transmission rate Zinc oxide nanoparticles Nanoparticle Substrate (printing) lcsh:Technology Article Contact angle chemistry.chemical_compound Deposition (phase transition) General Materials Science Thin film lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T Superhydrophobic coating chemistry Chemical engineering lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Stearic acid lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 Layer (electronics) |
| Zdroj: | Materials Volume 12 Issue 14 Materials, Vol 12, Iss 14, p 2234 (2019) |
| ISSN: | 1996-1944 |
| Popis: | Zinc oxide nanoparticles (ZnONPs) and stearic acid are herein used for the preparation of hydrophobic coatings with good moisture barrier property on flexible plastic substrates. Fast, high throughput, mild and easy-to-run processing techniques, like airbrushing and gravure printing, are applied for thin films deposition of these materials. The results of this study indicated that the best hydrophobic coating in terms of water contact angle (115° ) is obtained through a two-steps printing deposition of a ZnONPs layer followed by a stearic acid layer. All the deposition procedures proved to be effective in terms of water vapor barrier properties, reaching values of 0.89 g/m2/day, with a 45% reduction with respect to the bare substrate. These preliminary data are very encouraging in the perspective of a low cost and green approach for the realization of functional coatings for packaging applications. |
| Databáze: | OpenAIRE |
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