Polymersomes as virus-surrogate particles for evaluating the performance of air filter materials

Wang, Shuo; Liu, Yuan; Xu, Mengmeng; Hu, Fei; Yu, Qianqian; Wang, Linge

doi:10.1016/j.giant.2022.100104

Cited by 5 publications

(2 citation statements)

References 47 publications

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“…Similarly, the reduction in the fiber diameter with the addition of PDA nanoparticles has been previously reported in the production of electrospun polycaprolactone fibers . The fiber diameter distributions obtained from PAN/HNT-PDA nanofibers are similar to other PAN air filter studies. − In general, a reduction in fiber diameter leads to a reduction in the overall pore size distribution of the nanofiber, which increases the uptake of small diameter particles, especially in air filtration applications …”

Section: Resultssupporting

confidence: 72%

Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters

Demirel

Kolgesiz

Yuce

et al. 2022

ACS Appl. Nano Mater.

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Antibacterial air filter media offer an important solution to indoor air pollution from bioaerosols, which pose a serious threat to global public health. In this study, we introduced an antibacterial air filter based on nanofibers functionalized with a photothermal agent, which deactivates bacteria upon near-infrared (NIR) irradiation. Halloysite nanotube (HNT) clay nanoparticles coated with polydopamine (PDA), which heat up when exposed to NIR light, were utilized as photothermal agents to be incorporated into polyacrylonitrile (PAN) nanofibers. The resulting PAN/HNT-PDA nanofibers reached 102 °C after 2 min of NIR irradiation and physically destroyed Staphylococcus aureus (S. aureus) cells that were in contact with the nanofibers. In a simulated air filtration test system, photothermal nanofibers demonstrated a bioaerosol filtration efficiency of 99.97% and a quality factor of 0.14 Pa −1 . 10 7 S. aureus cells captured on the nanofibers were killed via a 10 min NIR-light irradiation, whereas the light-activated antibacterial properties of the nanofibers were maintained over 5 bioaerosol flow/NIR-treatment cycles. The photothermal agent-containing electrospun nanofibers presented here have a strong potential for aerosol removal as light-activated antibacterial air filters.

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Section: Resultssupporting

confidence: 72%

Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters

Demirel

Kolgesiz

Yuce

et al. 2022

ACS Appl. Nano Mater.

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“…Golinko et al 24 determined the correlation between the adhesion tightness of a half-mask and adhesion to a user's face. Wang et al 25 employed polymersomes as a new type of virus surrogate particle for testing the filtration efficiency of different commercial masks. To achieve the reuse of masks, various disinfection methods, such as heating, 26 autoclave sterilization, 27 ethanol spray 28 and ultraviolet germicidal irradiation, 29,30 have been explored.…”

mentioning

confidence: 99%

How will actual wearing time influence the protective effect of surgical masks?

Shi

Zhang

et al. 2022

Textile Research Journal

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The protection effects of wearing masks against viruses and bacteria have been verified many times over previous pandemics and infectious diseases. However, the supply of the surgical masks can barely meet the surging demand at the early stage (first 12 months) of the outbreak of a pandemic. Thus, it is essential to use surgical masks wisely in such urgent times. In this work, we selected two types of surgical masks and systematically explored how actual wearing time influences the protective performances of the masks. Each type of surgical masks was worn for 4, 10, 24, 32 and 48 h, respectively, and the results show that with the increase of actual wearing time, both particulate filtration efficiency (PFE) and bacterial filtration efficiency (BFE) of the masks decline. After wearing for 32 h, the PFEs of both types of masks were still far above the corresponding standard (≥30%, according to YY0469-2011). After wearing for 10 h, the BFEs of both masks were over 95% (which is regarded as the safe value), whereas after 24 and 32 h of wearing, the BFE of one type of mask decreased obviously to 91.6% and 80.0%, respectively. Based on these results, it is rational to conclude that the wearing time of surgical masks should be no more than 10 h.

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Evaluating the integrity of polymersomes by FRET for optimization of the lyophilization parameters

Liu

Wang

et al. 2022

Polymer

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Polymersomes as virus-surrogate particles for evaluating the performance of air filter materials

Cited by 5 publications

References 47 publications

Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters

Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters

How will actual wearing time influence the protective effect of surgical masks?

Evaluating the integrity of polymersomes by FRET for optimization of the lyophilization parameters

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