High-performance and eco-friendly nonwoven-nanofiber filters comprising renewably sourced bio-based polyesters were fabricated by electrospinning (ES). Typical commercial nonwoven filters are thick, with uneven fiber distributions and low recovery. Bio-based polymers made of raw plant materials have soft textures. Over 75% of the polyester used herein was sourced renewable. We observed variations in its morphology under different operating conditions in scanning electron microscope images by tuning the operating parameters of ES and using different DMF/CHCl₃ solvent ratios. We produced various types of ES nanofibers with uniform fiber diameters ranging from 400 to 2000 nm, which increased filter efficiency and helped overcome existing shortcomings in filter applications. A scanning mobility particle sizer and NaCl aerosol particles of sizes 30–300 nm were used to test the prepared nanofiber filters. Owing to their high specific surface areas/volume ratios and small-fiber diameters, the nanofiber filters with fiber diameters smaller than 500 nm forcefully resisted the majority of suspended particles. The averaged penetration ability of ES fiber was decreased from 30% to 4%, with increasing heating temperature and annealing time. Thicker ES fibers with beaded morphologies exhibited average penetration <0.8% and lower pressure drop, which enhanced the filter quality and single-fiber efficiency.

通过静电纺丝（ES）制造了包含可再生来源的生物基聚酯的高性能，环保型非织造纳米纤维过滤器。典型的商用无纺布过滤器很厚，纤维分布不均且回收率低。由植物原料制成的生物基聚合物质地柔软。本文使用的聚酯中超过75％来自可再生资源。我们通过调整ES的操作参数并使用不同的DMF / CHCl ₃在扫描电子显微镜图像中观察到了在不同操作条件下其形态的变化。溶剂比率。我们生产了各种类型的ES纳米纤维，其纤维直径范围从400到2000 nm不等，这提高了过滤器的效率，并克服了过滤器应用中的现有缺陷。使用扫描迁移率粒度仪和大小为30–300 nm的NaCl气溶胶颗粒来测试制备的纳米纤维滤膜。由于它们的高比表面积/体积比和小纤维直径，纤维直径小于500 nm的纳米纤维过滤器有力地抵抗了大部分悬浮颗粒。随着加热温度和退火时间的增加，ES纤维的平均渗透能力从30％降低到4％。具有珠状形态的较粗ES纤维表现出平均渗透率<0.8％和更低的压降，从而提高了过滤器的质量和单纤维效率。