Bioinspired silica-containing polyurethane-acrylate films: Towards superhydrophobicity with tunable water adhesion
| Autor: | Aymeric Fourmentin, Jean-François Gérard, Aurélia Charlot, Jocelyne Galy |
|---|---|
| Přispěvatelé: | Ingénierie des Matériaux Polymères (IMP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), Doucet, Florian, Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
[CHIM.POLY] Chemical Sciences/Polymers
Morphology (linguistics) Materials science Polymers and Plastics 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Materials Chemistry Chemical composition ComputingMilieux_MISCELLANEOUS Polyurethane Fumed silica Acrylate [CHIM.MATE] Chemical Sciences/Material chemistry Nanocomposite Organic Chemistry Adhesion [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences [CHIM.POLY]Chemical Sciences/Polymers chemistry Chemical engineering Wetting 0210 nano-technology |
| Zdroj: | Polymer Polymer, Elsevier, 2018, 155, pp.1-12 |
| ISSN: | 0032-3861 |
| Popis: | In this paper, a convenient, straightforward, and large-scale transferable approach for the preparation of fluorine-free bioinspired superhydrophobic silica-filled photo-crosslinked polyurethane-acrylate (PUA) nanocomposite films is reported. The enrichment of the hydrophobic fumed silica at the film surface and especially its inherent dual scale dimension, related to its synthesis, enables to endow the film with super water-repellent features. Particularly, the effect of the silica content from 0 to 60 wt% is studied and the wettability properties of the resulting nanocomposite films are investigated in link with the chemical composition and the surface morphology at different scales. It is shown that different wetting states can be achieved from Wenzel to Cassie impregnating and then Cassie-Baxter regime, dictated by the silica content present at the air surface. Thus, by simply varying the silica content, the water adhesion can be adjusted from very high for a silica content equal to 50 wt% to extremely low for a silica content equal to 60 wt%, imparting the film with “Lotus” or “rose petal” effect, respectively. The as-prepared slippery or sticky nanocomposite films are shown to exhibit long-lasting wettability performances. |
| Databáze: | OpenAIRE |
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