Inhalable particulate matter poses significant health risks, and current air filtration materials often struggle with efficiently capturing particles smaller than 300 nm and providing real-time feedback on filtration performance. We present the synthesis and characterization of polyethylene terephthalate (PET) nano-woven luminescent fibers (PNWLFs), created through a positive and negative dual high-voltage electrospinning method. The PNWLFs feature a unique nano-woven structure composed of backbone fibers (200–1000 nm) and nanofibers (20–160 nm), which endow them with remarkable mechanical strength, maintaining a breaking force of 117.5 cN and structural integrity under a 138 mm water column. The fibers exhibit excellent breathability and waterproof performance, with a water vapor transmission rate of 4.69 kg/m2/day. More importantly, the PNWLFs demonstrate exceptional air filtration capabilities, achieving filtration efficiencies of 99.77 % for PM5.0, 99.76 % for PM2.5, 99.72 % for PM1.0, 99.53 % for PM0.5, and 99.40 % for PM0.3, with minimal pressure drop of 106 Pa. Additionally, these fibers possess a unique fluorescence-indicating function: the fluorescence intensity decreases in response to increasing particulate matter concentration and the number of filtration cycles, allowing for intuitive visual monitoring of filter performance and particulate levels. These attributes underscore the significant potential of PNWLFs synthesized by this work for advanced air filtration applications and effective air quality monitoring.

中文翻译：

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PET 纳米编织发光纤维，用于高效空气过滤和颗粒物荧光指示


可吸入颗粒物会带来重大的健康风险，目前的空气过滤材料通常难以有效捕获小于 300 nm 的颗粒物并提供有关过滤性能的实时反馈。我们介绍了聚对苯二甲酸乙二醇酯 （PET） 纳米编织发光纤维 （PNWLF） 的合成和表征，该纤维通过正负双重高压静电纺丝方法制成。PNWLF 具有独特的纳米编织结构，由主链纤维 （200-1000 nm） 和纳米纤维 （20-160 nm） 组成，这使它们具有卓越的机械强度，在 138 mm 水柱下保持 117.5 cN 的断裂力和结构完整性。纤维表现出优异的透气性和防水性能，水蒸气透过率为 4.69 kg/m2/天。更重要的是，PNWLF 表现出卓越的空气过滤能力，PM5.0 的过滤效率为 99.77%，PM2.5 的过滤效率为 99.76%，PM1.0 的过滤效率为 99.72%，PM0.5 的过滤效率为 99.53%，PM0.3 的过滤效率为 99.40%，最小压降为 106 Pa。此外，这些纤维具有独特的荧光指示功能：荧光强度随着颗粒物浓度和过滤循环次数的增加而降低， 允许对过滤器性能和颗粒物水平进行直观的视觉监测。这些特性强调了这项工作合成的 PNWLF 在高级空气过滤应用和有效空气质量监测方面的巨大潜力。