Electrospun nanofibers of polyvinylidene fluoride incorporated with titanium nanotubes for purifying air with bacterial contamination
Autor: | Sangeetha Dharmalingam, Shivendu Ranjan, Mohan Bangaru, Vaidhegi Kugarajah, Felix Swamidoss Victor |
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Rok vydání: | 2021 |
Předmět: |
Electrospun nanofiber
Staphylococcus aureus Thermogravimetric analysis Materials science Scanning electron microscope Health Toxicology and Mutagenesis Nanofibers Bacterial filtration efficiency Titanium nanotube 010501 environmental sciences 01 natural sciences Box-Behnken law.invention chemistry.chemical_compound law Escherichia coli Environmental Chemistry Fourier transform infrared spectroscopy Filtration 0105 earth and related environmental sciences Air filter Titanium Nanotubes Nanocomposite PVDF General Medicine Pollution Polyvinylidene fluoride Electrospinning chemistry Chemical engineering Antibacterial filter Polyvinyls Research Article |
Zdroj: | Environmental Science and Pollution Research International |
ISSN: | 1614-7499 0944-1344 |
Popis: | Polyvinylidene fluoride (PVDF) blended with varying concentrations of titanium nanotubes (TNT) was electrospun to result in a nanocomposite filter media. Sandwich structures were obtained by depositing the electrospun fibers between polypropylene (PP) nonwoven sheets. The synthesized tubular TNT was confirmed for its morphology through a transmission electron microscope (TEM). The prepared filter media was analyzed through a scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The effectiveness of the filter media was evaluated through the zone of inhibition and antibacterial activity against E. coli and S. aureus. The Box-Behnken design is experimented with three-level variables, namely areal density of substrate (GSM), electrospinning time (hours), and concentration of TNT (wt%) for investigating the bacterial filtration efficiency through an Andersen sampler. Among other statistical tests (STATs), PVDF + 15 wt% TNT has a bacterial filtration efficiency of 99.88% providing greater potentials upon application for clean air management. It can be noted that the future application of this formulation could be efficient filtration of other microbes and could be used in facemasks to industrial-scale air filters. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s11356-021-13202-3. |
Databáze: | OpenAIRE |
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