高透气和防尘的保护膜通过电活性多聚 (乳酸) 微纤维和纳米纤维的层次结构
Xinjian He1, Jiaqi Li2, Cunmin Wang2
1School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China.
Journal of hazardous materials
|November 13, 2024
概括
这项研究介绍了用于呼吸道保护的先进生物降解纤维膜. 这些膜提供了更高的过效率和更长的使用寿命,改善了空气质量,并使呼吸模式的监控成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 环境科学 环境科学
背景情况:
- 可生物降解的电聚乳酸 (PLA) 纤维膜 (FMs) 面临呼吸保护方面的挑战,原因是电效应差,使用寿命短.
- 现有的PLA FM很难满足对高效颗粒物过和扩展可用性的需求.
研究的目的:
- 开发具有高度电活性的双尺度PLA纤维膜 (DS-PLA FMs),具有改进的电位特性和延长使用寿命.
- 为了提高可生物降解膜的过性能和防尘能力,用于呼吸道保护.
- 探索这些先进膜在深度学习辅助呼吸监测方面的潜力.
主要方法:
- 使用微对纳米 (MON) 方法制造DS-PLA FM,集成内层纳米纤维和外层微纤维.
- 加入定制的银色装饰的酸 (Ag-BTO) 介电材料,以增强电位效应和电荷存储稳定性.
- 评估过效率,压力下降,吸尘能力和 triboelectric 性能.
- 卷积神经网络 (CNN) 用于呼吸模式识别的应用.
主要成果:
- DS-PLA FM 显示了显著改善的介电常数 (1.40),表面电位 (11.4 kV) 和 triboelectric 性能 (34.2 V).
- 在低压力下降 (58.8Pa) 时,达到高的PM过效率 (99.10%的PM2.5,90.37%的PM0.3).
- 与正常的PLA相比,其保持尘埃容量 (9.4 g/m2) 高出3.2 倍.
- 美国有线电视新闻网 (CNN) 的呼吸模式分类准确率达到了96.7%.
结论:
- 开发的DS-PLA FM为高性能空气过提供了有前途的解决方案,并延长了使用寿命.
- MON方法和Ag-BTO集成有效地提高了可生物降解膜的静电特性和功能.
- 这项技术有可能用于先进的呼吸道保护和创新的呼吸道监测系统.
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