Electrospun Polystyrene and Acid-Treated Cellulose Nanocrystals with Intense Pulsed Light Treatment for N95-Equivalent Filters

Wong, Danny; Hartery, Sean; Keltie, Erin; Chang, Rachel Y.-­W.; Kim, Jong Sung; Park, Simon S.

doi:10.1021/acsapm.1c00722

Cited by 9 publications

(5 citation statements)

References 48 publications

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“…Examples for study exclusion reasons were the use of machine learning models instead of provision of empirical data, 16 or no data about cloth face masks. 17 A PRISMA-flowchart of study inclusion is provided in Supplementary Fig. S1 , see online supplementary material for a colour version of this figure.…”

Section: Methodsmentioning

confidence: 99%

Effectiveness of cloth face masks to prevent viral spread: a meta-analysis

Zeilinger,

Brunevskaya,

Wurzer

et al. 2023

Journal of Public Health

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Background The effectiveness of cloth face masks to prevent viral spread has not yet been conclusively established. In this meta-analysis, we evaluate their effectiveness in comparison to standard medical/surgical and N95-typed masks against viral spread. Methods We identified literature through a systematic search in three databases and meta-analytically synthesized relevant studies by means of random-effects as well as multilevel modelling. Results Twelve studies comprising k = 28 effect sizes (N = 338) were included. Medical/surgical and N95-typed masks outperformed cloth masks, yielding a large effect (g = 1.40). This effect remained robust when data were grouped according to comparisons with medical/surgical masks (g = 1.25) and N95-typed masks (g = 1.29). However, effects were differentiated according to mask fit, indicating reversals of signs when cloth mask effects were compared with ill-fitting medical/surgical and N95-typed masks (gs = −12.50 and − 10.90, respectively). Conclusions Cloth face masks were found to have significantly poorer filtering performance than medical/surgical masks and N95 masks, but only if non-cloth masks were properly fitted. Our results illustrate the necessity of using well-fitting medical/surgical or N95-typed masks to prevent viral spread, although some allowance should be made in circumstances where higher compliance with cloth mask mandates are expected.

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Section: Methodsmentioning

confidence: 99%

Effectiveness of cloth face masks to prevent viral spread: a meta-analysis

Zeilinger,

Brunevskaya,

Wurzer

et al. 2023

Journal of Public Health

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“…[ [208] , [209] , [210] ]. Recent works have focused on the ES of polymers and cellulose blends for the development of filter materials, reporting promising performances for face mask/ respirators [ 158 , 211 , 212 ]. Additionally, the cellulose acetate (CA) has shown to be an eco-friendly alternative to petroleum-based non-biodegradable polymers for the fabrication of electrospun nanofiber filters [ 159 , 181 , 213 ].…”

Section: The Use Of Electrospun Nanofibers In Surgical Mask and Respi...mentioning

confidence: 99%

Electrospun nanofibers for medical face mask with protection capabilities against viruses: State of the art and perspective for industrial scale-up

Cimini

Imperi

Picano

et al. 2023

Applied Materials Today

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“…The filtering efficiency and pressure drop of the fabricated air filters were conducted at the Department of Physics and Atmospheric Science at Dalhousie University. The details of the setup are published in [36]. The filter was held by a stainless steel assembly (Pall 1209) to expose a circular section of 25 mm diameter to the NaCl aerosol.…”

Section: Characterization Of Fabricated Electrospun Matsmentioning

confidence: 99%

Fabrication of Ultra-High-Performance PVDF-HFP Air Filters by Electrospinning

Borojeni,

Gajewski,

Jenab

et al. 2023

Fibers

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This research aims to fabricate hydrophobic electrospun air filters with ultra-high performance against virions. In order to achieve this goal, constant basis weight electrospun poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) with low-bead, high-bead, and ultra-high-bead fibre structures were used to fabricate single and multilayer filters by controlling the Dimethylformamide (DMF)-to-acetone ratio of the solvent. The water contact angle of the fabricated layers ranged from 131° for low-bead structures to 135° for ultra-high-bead structures, indicating their overall high hydrophobicity. The size-resolved filtering efficiency and pressure drop tests on the fabricated filters showed that low-bead structure for both single and multilayer filters and high-bead structure for single-layer filters enhance the quality factor remarkably. The results showed that the single-layer ultra-high-bead structure air filters had a filtering efficiency of 99.33%, superior to N95 air filters (96.54%) and comparable to double N95 filters (99.86%). However, the electrospun air filter showed a pressure drop of 169.3 Pa and a quality factor of 27.6×10−3 Pa−1compared to a pressure drop of 388 Pa and quality factor of 16.9×10−3 Pa−1 for double N95 air filters. Therefore, it has a high potential to be used as the filtration media in hospitals, long-term care centers, and masks to provide superior protection against virions for healthcare providers and patients.

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Electrospun Polystyrene and Acid-Treated Cellulose Nanocrystals with Intense Pulsed Light Treatment for N95-Equivalent Filters

Cited by 9 publications

References 48 publications

Effectiveness of cloth face masks to prevent viral spread: a meta-analysis

Effectiveness of cloth face masks to prevent viral spread: a meta-analysis

Electrospun nanofibers for medical face mask with protection capabilities against viruses: State of the art and perspective for industrial scale-up

Fabrication of Ultra-High-Performance PVDF-HFP Air Filters by Electrospinning

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