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Abstract
Air pollution is becoming an increasingly pressing issue, with fiber-based air filtration materials now widely employed for personal protection, indoor purification and other purposes. However, conventional air filtration materials are only capable of filtering particles and the bacteria, viruses and other microorganisms that remain in the fires after filtration can be released under certain conditions, posing an additional risk to human health. Therefore, filter materials that incorporate antibacterial properties are better suited to meeting the needs of optimal human health. Nano-antimicrobial fibrous membranes with high filtration efficiency and low filtration resistance were prepared using polyamide 6 (PA6) and chitosan (CS) via solution blowing spinning technology. The membranes were shown to possess strong antimicrobial activity against both Gram-negative and Gram-positive bacteria. Additionally, they were found to effectively remove microbial contaminants from water. Technical abbreviations are explained upon first use. Ambiguity and biased language are avoided and the register remains formal throughout. The text has been proofread for grammatical and punctuation correctness. Performance tests were undertaken on the pre-fabricated fiber mesh and results indicated the CS/PA6 nanofiber mesh prepared by the solution blowing spinning technique had a complex three-dimensional structure, containing a significant number of cavity structures located between the fibers. The nanofiber mesh achieved a filtration efficiency of 99.92% against PM 0.3 with a pressure drop of 55 Pa in resistance and exhibited antibacterial performance of over 99.99% against Staphylococcus aureus. Addressing the limitations of traditional air filtration materials, including poor antibacterial effect, low efficiency, and high filtration resistance, is a practical consideration. Commercial opportunities arise in the areas of personal protection, indoor purification, and industrial filtration.
Published Version
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