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Research on poly(lactic acid) nanofiber membrane for respiratory monitoring and PM0.3 filtration

Authors： ZHANG Chuanjiu1, ZHU Guiying2, ZHANG Yifan2, Jiang Liang2, LI Jiaqi3, WANG Cunmin3, LI Xinyu3, SONG Xinyi3, ZHANG Mingming4, XU Huan2

Units： 1. Shendong Coal Group Co.， Ltd., CHN Group, Yulin 719315, China; 2. School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; 3. School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China; 4. China Academy of Safety Science and Technology, Beijing 100012, China

KeyWords： polylactic acid nanofibers; electroactivity; air filtration; respiratory monitoring

ClassificationCode：TB333

year,volume(issue):pagination： 2025,45(1):48-57

Abstract：

An environmentally friendly nanofibrous membrane (NFM) with efficient respiratory protection performance was successfully prepared by coaxial electrospinning technique. The nanofibrous membrane used the PLA solution doped with dielectric zeolitic imidazolate framework-8 (ZIF-8) crystals as the shell layer, which enhanced the charge storage capacity and improved the inter-interfacial polarization effect of the nanofiber membrane. In addition, thanks to the structural design of the fiber morphology and the addition of ZIF-8, the nano-protruding structure formed on the fiber surface effectively alleviated the air resistance. The results showed that when the mass fraction of ZIF-8 in the shell solution was 4%, its surface potential and relative dielectric constant reached 3.9 kV and 1.64, respectively. At 32 L/min air flowrate, the removal efficiency of PM0.3 reached 97.99%, with a pressure drop of only 52.6 Pa, enabling effective PM0.3 filtration while keeping low air resistance. Additionally, the triboelectric nanogenerators composed of the prepared nanofibrous membrane was also able to realize the respiratory monitoring function. The unique design provided a new direction in the manufacture of high-performance air filters that combine respiratory protection and health monitoring functions.

Funds：

中国矿业大学研究生创新计划项目(2024WLJCRCZL276， 2024WLKXJ143， 2024WLKXJ140， 2024WLJCRCZL272， 2024WLJCRCZL195)；中央高校基本科研业务费专项资金(2024-10958， 2024-10967)；江苏省研究生科研与实践创新计划(SJCX24_1407， SJCX24_1403， KYCX24_2917， KYCX24_2914， KYCX24_2937)；国家重点研发计划(2023YFC3011704)；国家能源集团井工煤矿粉尘与职业病防治研究(六)煤矿粉尘防护装备研发(E210100285)

AuthorIntro：

张传玖（1983-），男，四川达州人，硕士，工程师，主要从事矿山压力与岩层控制以及煤矿安全生产现场管理工作

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