Sustainable and long-time ‘rejuvenation’ of biomimetic water-repellent silica coating on polyester fabrics induced by rough mechanical abrasion
| Autor: | Dennis W. Hess, Cornelia Rosu, Victor Breedveld, Lu Jiang, Haisheng Lin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Abrasion (mechanical) Methyltrimethoxysilane 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Durability 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Contact angle Polyester chemistry.chemical_compound Colloid and Surface Chemistry Coating chemistry engineering Polyethylene terephthalate Wetting Composite material 0210 nano-technology |
| Zdroj: | Journal of Colloid and Interface Science. 516:202-214 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2018.01.055 |
| Popis: | The economical use of water-repellent coatings on polymeric materials in commercial and industrial applications is limited by their mechanical wear robustness and long-term durability. In this study, we demonstrate that polyethylene terephthalate (PET) fabric modified with inorganic, methyltrimethoxysilane (MTMS)-based coatings shows excellent resistance against various types of wear damage, thereby mimicking superhydrophobic biological materials. These features were facilitated by the rational design of coating processing that also enabled tunable hierarchical surface structure. A series of custom and standard testing protocols revealed that coating-to-substrate adhesion was remarkably high, as was the resistance to various mechanical abradents. The most intriguing characteristic observed during aging and abrasion cycles was the enhancement in non-wettability or 'rejuvenation' reflected by water droplet roll-off behavior, a characteristic of self-cleaning materials. Water-repellent properties of coated polyester were also enhanced by prolonged thermal annealing and were maintained after custom laundry. The developed technology offers opportunities to design low cost, durable and functional textiles for both indoor and outdoor applications. |
| Databáze: | OpenAIRE |
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