Penconek Agata, Bąkała Natalia, Jackiewicz-Zagórska Anna, Małolepszy Artur, Przekop Rafał, Moskal Arkadiusz
Faculty of Chemical and Process Engineering, Warsaw University of Technology, 00-645 Warsaw, Poland.
Materials (Basel). 2024 Dec 10;17(24):6038. doi: 10.3390/ma17246038.
This study explores the fabrication of electret nonwoven structures for high-efficiency air filtration, utilizing the blow spinning technique. In response to the growing need for effective filtration systems, we aimed to develop biodegradable materials capable of capturing fine particulate matter (PM2.5) without compromising environmental sustainability. Polylactic acid (PLA) was used as the primary polymer, with the addition of SiO and MoS to enhance the fibers' charge retention and filtration performance. The fibers were charged electrostatically to improve particle capture efficiency. The experimental results showed that fibers containing 5% MoS exhibited the highest filtration efficiency, surpassing those with SiO, despite MoS being a semiconductor and SiO a dielectric. Furthermore, the addition of MoS improved the filtration efficiency across a range of particle sizes (0.2-1 µm) while maintaining a manageable pressure drop. These findings suggest that incorporating MoS in electret nonwoven structures can significantly improve filtration performance, making it a promising material for advanced air filtration applications. This study contributes to the development of eco-friendly filtration materials with high performance, essential in reducing exposure to airborne pollutants.
本研究利用吹纺技术探索用于高效空气过滤的驻极体非织造结构的制造。为响应对有效过滤系统日益增长的需求，我们旨在开发能够捕获细颗粒物（PM2.5）同时又不损害环境可持续性的可生物降解材料。聚乳酸（PLA）被用作主要聚合物，并添加了SiO和MoS以增强纤维的电荷保持能力和过滤性能。对纤维进行静电充电以提高颗粒捕获效率。实验结果表明，含有5% MoS的纤维表现出最高的过滤效率，超过了含有SiO的纤维，尽管MoS是半导体而SiO是电介质。此外，添加MoS在保持可控制的压降的同时，提高了一系列粒径（0.2 - 1微米）范围内的过滤效率。这些发现表明，在驻极体非织造结构中加入MoS可以显著提高过滤性能，使其成为先进空气过滤应用的一种有前途的材料。本研究有助于开发高性能的环保过滤材料，这对于减少空气中污染物的暴露至关重要。
