High Filterable Electrospun Nanofibrous Membrane with Charged Electret After Electrification Treatment for Air Filtration 


Vol. 24,  No. 3, pp. 921-930, Mar.  2023
10.1007/s12221-023-00110-1


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  Abstract

Conventionally, charged melt-blown nonwoven fabrics had been applied as fi lter media in various protective masks and high-temperature gas fi lters in relevant fi elds, which are featured with high fi ltration effi ciency (FE) and low pressure drop ( P ). The charges, however, and hence the fi ltration effi ciency tend to decay with extended time, elevated temperature and increased humidity. In the current study, three types of charged nanofi brous membrane-based fi ltration medias, i.e., charged polyvinylidene fl uoride (PVDF), polytetrafl uoroethylene-PVDF, and tourmaline-PVDF electrospun nanofi brous membranes (ENMs), were successfully prepared by electrospinning process, followed by electrifi cation. The resultant samples showed excellent fi ltration performance, relatively durable charging eff ect, and stable air permeability. Moreover, the data of FE and P of ENMs after exposure to the air for 12 h are still more than 98% and less than 100 Pa, respectively. The combined method of electrospinning technology and electrifi cation was proposed to obtain novel fi lter medias having semi-durable FE and relatively low P , i.e., the FE will still remain at a relatively high level even if all the charges escape away from the nanofi ber-based fi lter media, which may fi nd wide applications in gas fi ltration industry.

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  Cite this article

[IEEE Style]

B. Yang, M. Hao, Z. Huang, Z. Chen, Y. Liu, "High Filterable Electrospun Nanofibrous Membrane with Charged Electret After Electrification Treatment for Air Filtration," Fibers and Polymers, vol. 24, no. 3, pp. 921-930, 2023. DOI: 10.1007/s12221-023-00110-1.

[ACM Style]

Bo Yang, Ming Hao, Zheng Huang, Zhijun Chen, and Yanbo Liu. 2023. High Filterable Electrospun Nanofibrous Membrane with Charged Electret After Electrification Treatment for Air Filtration. Fibers and Polymers, 24, 3, (2023), 921-930. DOI: 10.1007/s12221-023-00110-1.