Trap-Induced Dense Monocharged Perfluorinated Electret Nanofibers for Recyclable Multifunctional Healthcare Mask

Abstract

Recently, wearable and breathable healthcare devices for air filtering and real-time vital signs monitoring have become urgently needed since virus and particulate matter (PM) cause serious health issues. Herein, we present a trap-induced dense monocharged hybrid perfluorinated electret nanofibrous membrane (HPFM) for highly efficient ultrafine PM0.3 removal with an efficiency of 99.712% under low pressure drop (38.1 Pa) and high quality factor of 0.154 Pa–1. Furthermore, a recyclable multifunctional healthcare mask is constructed by integrating the HPFM-based nanogenerator, which realizes efficient PM0.3 filtering and wireless real-time human respiration monitoring simultaneously. More importantly, the performance of this mask is still relatively stable even at 100%RH humidity and 92 °C temperature conditions for 48 h, which infers that it can be reused after disinfection. The strategy of fabricating HPFM provides an approach to obtain charge-rich stable electret materials, and the design of multifunctional masks demonstrates their potential application for future personal protection and health monitoring devices.

Evaluations of Electrostatic Filtration Efficiency and Antibacterial Efficacy of Antibacterial Electret Polypropylene Filters: Effects of Using Low Molecular Antibacterial Agent as Additive

“…There are variations in the electrical properties between the two regions, so the transmission of electric charge demands extra electric energy, which in turn allows the space between two regions to detain more electric charges. Therefore, this area is called a trap, and more traps can better preserve more electric charges [ 26 , 27 ]. To sum up, the incorporation of low molecular triclosan does not attenuate the surface voltage and surface potential, namely the antibacterial agent (i.e., triclosan) does not exert negative effects over the electret filters.…”

Applications of nanotechnology in smart textile industry: A critical review

“…The membrane was attached on a reusable N95 mask which could filter microbes upto the size of 5 nm [59] . Thus, various nanomaterial combinations can be integrated with the textile fibers by drawing them into nanofibers or by coating methods, so that optimum activity can be obtained [60] , [61] , [62] , [63] .…”

Gradient Copolymerization towards High-performance Monocomponent Polymers for Energy and Charge Storages

“…Read Full License Introduction Dielectric polymers of superb energy and charge storage properties are widely applied in power equipment, [1][2][3][4] electronic devices 5,6 and environmental/medical ltration. [7][8][9] For example, in electrical industry, polymer based power capacitors are of massive applications in large-scale electricity storage and power converters in pulse power systems as well as electric vehicles. [10][11][12] In eld of organic electronics, charges in polymeric electret provide built-in electrostatic elds in optimizing the performance of organic eld-effect transistors (OFETs), 13,14 which is also regarded as the basis of nonvolatile ash memories.…”