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Electrospun Filtering Membrane Designed as Component of Self-Decontaminating Protective Masks.

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Title: Electrospun Filtering Membrane Designed as Component of Self-Decontaminating Protective Masks.
Authors: Muniz, Nathália Oderich1 (AUTHOR), Gabut, Sarah1 (AUTHOR), Maton, Mickael2 (AUTHOR), Odou, Pascal3 (AUTHOR), Vialette, Michèle4 (AUTHOR), Pinon, Anthony4 (AUTHOR), Neut, Christel5 (AUTHOR), Tabary, Nicolas1 (AUTHOR), Blanchemain, Nicolas2 (AUTHOR), Martel, Bernard1 (AUTHOR) bernard.martel@univ-lille.fr
Source: Nanomaterials (2079-4991). Jan2023, Vol. 13 Issue 1, p9. 17p.
Subjects: Filters & filtration, Coronaviruses, Membrane filters, Escherichia coli, COVID-19 pandemic, Polyvinyl alcohol, Nonwoven textiles, Medical masks
Abstract: The 2019 coronavirus outbreak and worsening air pollution have triggered the search for manufacturing effective protective masks preventing both particulate matter and biohazard absorption through the respiratory tract. Therefore, the design of advanced filtering textiles combining efficient physical barrier properties with antimicrobial properties is more newsworthy than ever. The objective of this work was to produce a filtering electrospun membrane incorporating a biocidal agent that would offer both optimal filtration efficiency and fast deactivation of entrapped viruses and bacteria. After the eco-friendly electrospinning process, polyvinyl alcohol (PVA) nanofibers were stabilized by crosslinking with 1,2,3,4-butanetetracarboxylic acid (BTCA). To compensate their low mechanical properties, nanofiber membranes with variable grammages were directly electrospun on a meltblown polypropylene (PP) support of 30 g/m2. The results demonstrated that nanofibers supported on PP with a grammage of around only 2 g/m2 presented the best compromise between filtration efficiencies of PM0.3, PM0.5, and PM3.0 and the pressure drop. The filtering electrospun membranes loaded with benzalkonium chloride (ADBAC) as a biocidal agent were successfully tested against E. coli and S. aureus and against human coronavirus strain HCoV-229E. This new biocidal filter based on electrospun nanofibers supported on PP nonwoven fabric could be a promising solution for personal and collective protection in a pandemic context. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Electrospun Filtering Membrane Designed as Component of Self-Decontaminating Protective Masks.
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  Data: The 2019 coronavirus outbreak and worsening air pollution have triggered the search for manufacturing effective protective masks preventing both particulate matter and biohazard absorption through the respiratory tract. Therefore, the design of advanced filtering textiles combining efficient physical barrier properties with antimicrobial properties is more newsworthy than ever. The objective of this work was to produce a filtering electrospun membrane incorporating a biocidal agent that would offer both optimal filtration efficiency and fast deactivation of entrapped viruses and bacteria. After the eco-friendly electrospinning process, polyvinyl alcohol (PVA) nanofibers were stabilized by crosslinking with 1,2,3,4-butanetetracarboxylic acid (BTCA). To compensate their low mechanical properties, nanofiber membranes with variable grammages were directly electrospun on a meltblown polypropylene (PP) support of 30 g/m2. The results demonstrated that nanofibers supported on PP with a grammage of around only 2 g/m2 presented the best compromise between filtration efficiencies of PM0.3, PM0.5, and PM3.0 and the pressure drop. The filtering electrospun membranes loaded with benzalkonium chloride (ADBAC) as a biocidal agent were successfully tested against E. coli and S. aureus and against human coronavirus strain HCoV-229E. This new biocidal filter based on electrospun nanofibers supported on PP nonwoven fabric could be a promising solution for personal and collective protection in a pandemic context. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.3390/nano13010009
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 17
        StartPage: 9
    Subjects:
      – SubjectFull: Filters & filtration
        Type: general
      – SubjectFull: Coronaviruses
        Type: general
      – SubjectFull: Membrane filters
        Type: general
      – SubjectFull: Escherichia coli
        Type: general
      – SubjectFull: COVID-19 pandemic
        Type: general
      – SubjectFull: Polyvinyl alcohol
        Type: general
      – SubjectFull: Nonwoven textiles
        Type: general
      – SubjectFull: Medical masks
        Type: general
    Titles:
      – TitleFull: Electrospun Filtering Membrane Designed as Component of Self-Decontaminating Protective Masks.
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              Text: Jan2023
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