Abstract
In this study, nanoparticle-incorporated nanofiber-covered yarns were prepared using a custom-made needle-free electrospinning system. The ultimate goal of this work was to prepare functional nanofibrous surfaces with antibacterial properties and realize high-speed production. As antibacterial agents, we used various amounts of copper oxide (CuO) and vanadium (V) oxide (V2O5) nanoparticles (NPs). Three yarn preparation speeds (100 m/min, 150 m/min, and 200 m/min) were used for the nanofiber-covered yarn. The results indicate a relationship between the yarn speed, quantity of NPs, and antibacterial efficiency of the material. We found a higher yarn speed to be associated with a lower reduction in bacteria. NP-loaded nanofiber yarns were proven to have excellent antibacterial properties against Gram-negative Escherichia coli (E. coli). CuO exhibited a greater inhibition and bactericidal effect against E. coli than V2O5. In brief, the studied samples are good candidates for use in antibacterial textile surface applications, such as wastewater filtration. As greater attention is being drawn to this field, this work provides new insights regarding the antibacterial textile surfaces of nanofiber-covered yarns.
Highlights
Nanofibers have attracted growing attention due to their high surface area, highly porous structure, narrow pore size, and low density
These scanning electron microscopy (SEM) images indicate that the speed of the yarn influenced the morphology of the nanofibers, whereby we can see that the lowest speed of the polyvinyl butyral (PVB) + V2O5 sample resulted in a bundle structure (Figure 1a)
[54], we found the antibacterial efficiency of CuO against E. coli to be superior to that of other NPs, such as titanium dioxide (TiO2), zinc oxide (ZnO), zirconium dioxide (ZrO2), and silver
Summary
Nanofibers have attracted growing attention due to their high surface area, highly porous structure, narrow pore size, and low density. The superior properties of nanofibers enable their use in various fields, such as wastewater filtration [1,2], distillation [3,4], desalination [5,6], air filtration [7,8], biomedical application [9,10], gas sensors [11,12], batteries [13,14], data storage [15], and solar cells [16]. The techniques that have been used in the preparation of nanofiber yarns include: (1) direct collection by self-bundling [24], (2) deposition onto a non-solvent [25,26,27], and (3) drawing and twisting from the collector material [28,29]. Despite the successful attempts at yarn production, the productivity achieved has never been sufficient for practical application
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