Environmentally friendly and antimicrobial bilayer structured fabrics with integrated interception and sterilization for personal protective mask

Cheng, Yixin; Li, Jiwei; Chen, Meng; Zhang, Shaohua; He, Ruidong; Wang, Na

doi:10.1016/j.seppur.2022.121165

Cited by 40 publications

(18 citation statements)

References 62 publications

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“…(g) Filter performance upon 10 repetitive charging and discharging steps of the PBAT@CTAB-MMT NFM-based filter. (h) Performance comparison concerning basis weight and QF of various nanofiber filters made using the electrospinning technique. − …”

Section: Resultsmentioning

confidence: 99%

Multifunctional Filter Membranes Based on Self-Assembled Core–Shell Biodegradable Nanofibers for Persistent Electrostatic Filtration through the Triboelectric Effect

et al. 2022

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The massive production of polymer-based respiratory masks during the COVID-19 pandemic has rekindled the issue of environmental pollution from nonrecyclable plastic waste. To mitigate this problem, conventional filters should be redesigned with improved filtration performance over the entire operational life while also being naturally degradable at the end. Herein, we developed a functional and biodegradable polymeric filter membrane consisting of a polybutylene adipate terephthalate (PBAT) matrix blended with cetyltrimethylammonium bromide (CTAB) and montmorillonite (MMT) clay, whose surface properties have been modified through cation exchange reactions for good miscibility with PBAT in an organic solvent. Particularly, the spontaneous evolution of a partial core–shell structure (i.e., PBAT core encased by CTAB-MMT shell) during the electrospinning process amplified the triboelectric effect as well as the antibacterial/antiviral activity that was not observed in naive PBAT. Unlike the conventional face mask filter that relies on the electrostatic adsorption mechanism, which deteriorates over time and/or due to external environmental factors, the PBAT@CTAB-MMT nanofiber membrane (NFM)-based filter continuously retains electrostatic charges on the surface due to the triboelectric effect of CTAB-MMT. As a result, the PBAT@CTAB-MMT NFM-based filter showed high filtration efficiencies (98.3%, PM0.3) even at a low differential pressure of 40 Pa or less over its lifetime. Altogether, we not only propose an effective and practical solution to improve the performance of filter membranes while minimizing their environmental footprint but also provide valuable insight into the synergetic functionalities of organic–inorganic hybrid materials for applications beyond filter membranes.

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Section: Resultsmentioning

confidence: 99%

Multifunctional Filter Membranes Based on Self-Assembled Core–Shell Biodegradable Nanofibers for Persistent Electrostatic Filtration through the Triboelectric Effect

et al. 2022

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“…Particles in the air often contain a large number of bacteria, which will pose potential risks to human health [6] , [31] , [173] . Therefore, the endowment of antibacterial properties of air filters has become a research hotspot, which can prevent people from being injured by bacteria [32] , [174] , [175] .…”

Section: Design Of Multifunctional Electrospun Air Filtermentioning

confidence: 99%

“…Therefore, the endowment of antibacterial properties of air filters has become a research hotspot, which can prevent people from being injured by bacteria [32] , [174] , [175] . At present, most antibacterial materials are mainly based on the adsorption and lysis of cations on the negatively charged cell membrane and cell wall of bacteria, such as nanoparticles of metals and their oxides (TiO 2 , silver (Ag), ZnO, SiO 2 , MOFs), and some polymers (chitosan (CS) and N –halamine) [6] , [31] , [32] , [173] , [174] , [175] , [176] . In addition, the polymers which extracted from some natural herbs have also been proved to achieve antibacterial function by targeting specific groups of bacteria, such as sophora flavescens and curcumin (Cur) [177] , [178] , [179] .…”

Section: Design Of Multifunctional Electrospun Air Filtermentioning

confidence: 99%

“…By filtering small particles in the air, respiratory diseases can be avoided directly and effectively [5] . Therefore, the development of high–performance air filter has always been a research hotspot [6] , [7] , [8] .…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, extremely good filtration performance is no longer the goal pursued by researchers: evaluating the performance of air filter should be comprehensive [10] . For personal protection, the assessment of air filter should consider the comprehensiveness of protection and higher comfort [6] . Therefore, on the basis of high filtration efficiency and low resistance, the high–performance air filter for personal protection should be given more functions [14] .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

Shao

Chen²,

Wang³

et al. 2022

Separation and Purification Technology

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Antimicrobial Evaluation of Metal Microneedles Made by Local Electrodeposition-Based Additive Manufacturing on Metal-Coated Substrates

Sachan,

Schürch,

Koelmans

et al. 2023

JOM

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Electrochemical-based additive manufacturing of metals has many potential uses for the manufacturing of medical devices with small-scale features. In this study, we examined the in vitro antimicrobial properties of metal microneedles made by local electrodeposition-based additive manufacturing called CERES (Exaddon AG, Switzerland) on metal substrates. Three-by-three arrays of copper microneedles were created on copper-coated silicon substrates. To understand the effect of a galvanic couple between gold microneedles and a copper substrate on the antimicrobial activity of the microneedle device, threeby-three arrays of copper microneedles were created on gold-coated silicon substrates. Scanning electron microscopy was used to understand the microstructure of the microneedles; the microneedles were shown to possess hollow bores and sharp tips. X-ray photoelectron spectroscopy indicated the presence of copper, carbon, oxygen, silicon, and nitrogen as well as the absence of toxic impurities for the copper microneedles on copper-coated silicon substrates. X-ray photoelectron spectroscopy indicated the presence of copper, carbon, oxygen, copper, gold, and silicon as well as the absence of toxic impurities for the copper microneedles on gold-coated silicon substrates. In vitro cell colonization studies involving the Gram-positive bacterium Staphylococcus epidermidis, the Gram-negative bacterium Escherichia coli, and the opportunistic fungal pathogen Candida albicans at two hour and twenty four hour colonization at 37 o C showed generally stronger activity for copper microneedles on copper-coated silicon substrates than for copper microneedles on gold-coated silicon substrates and uncoated silicon substrates. The copper microneedles on gold-coated silicon substrates showed stronger antimicrobial activity than uncoated silicon substrates except for twenty four hour colonization with Escherichia coli. The results of this study show potential strategies for creating antimicrobial microneedles for medical applications via local electrodeposition-based additive manufacturing.

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Environmentally friendly and antimicrobial bilayer structured fabrics with integrated interception and sterilization for personal protective mask

Cited by 40 publications

References 62 publications

Multifunctional Filter Membranes Based on Self-Assembled Core–Shell Biodegradable Nanofibers for Persistent Electrostatic Filtration through the Triboelectric Effect

Multifunctional Filter Membranes Based on Self-Assembled Core–Shell Biodegradable Nanofibers for Persistent Electrostatic Filtration through the Triboelectric Effect

High-performance multifunctional electrospun fibrous air filter for personal protection: A review

Antimicrobial Evaluation of Metal Microneedles Made by Local Electrodeposition-Based Additive Manufacturing on Metal-Coated Substrates

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