Antibacterial efficiency of cellulose-based fibers covered with ZnO and Al2O3 by Atomic Layer Deposition
| Autor: | Marian Popescu, S. Draga, Mirela Petruta Suchea, Camelia Ungureanu, Vasilica Tucureanu, M.A. Popescu, E. Buse, F. Nastase |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Scanning electron microscope General Physics and Astronomy Substrate (chemistry) 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Atomic layer deposition chemistry.chemical_compound chemistry Chemical engineering Surface modification Viscose Cellulose Fourier transform infrared spectroscopy 0210 nano-technology Layer (electronics) |
| Zdroj: | Applied Surface Science. 481:1287-1298 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2019.03.268 |
| Popis: | Covering the natural fibers with metal oxides enhances the antibacterial properties of textiles. The efficiency of the nanostructured layer is determined by its thickness, uniformity, configuration and adherence to the flexible substrate. Conformal coatings with ZnO and Al2O3 of cotton and viscose fabrics were achieved by Atomic Layer Deposition (ALD) at low temperature. Morphological examination conducted by Scanning Electron Microscopy (SEM) displayed the surface functionalization, elemental mapping provided by Energy Dispersive X-ray Spectroscopy (EDS) illustrated the uniform distribution of Zn and Al oxides, and the chemical structure stability was demonstrated by Fourier Transform Infrared Spectrometry (FTIR). The inhibition of Escherichia coli and Staphylococcus aureus evaluated after 18 h of incubation disclosed very good antibacterial properties of the organic-inorganic composites, with emphasis on viscose coated with metal oxides. In vitro cytotoxic studies developed through direct and indirect contact methods, highlighted the non-toxic effects of Al2O3 on human fibroblasts and keratinocytes. |
| Databáze: | OpenAIRE |
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