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  4. Polyamide Nanofiber-Based Air Filters for Transparent Face Masks
 
research article

Polyamide Nanofiber-Based Air Filters for Transparent Face Masks

Avossa, Joshua
•
Batt, Till
•
Pelet, Thierry  
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November 26, 2021
Acs Applied Nano Materials

Transparent face masks are the ultimate solution for improving communication during pandemic times while at the same time slowing the spread of pathogens. Here, we demonstrate an easily scalable process consisting of directly electrospinning polyamide nanofibers onto a mechanical stable substrate made of poly(lactic acid) by a needleless setup for the production of transparent filter material. Filtration tests against NaCl and fructose aerosols and pressure drop tests were performed and compared with the European standard for medical face masks (EN 14683:2019) and the Swiss rule for community masks (SNR 30000:2021). The filter showed outstanding transparency (similar to 70% transmittance in the visible-light range), 89% filtration efficiency against PM1.0, and a pressure drop of 6.5 Pa/cm(2).

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Type
research article
DOI
10.1021/acsanm.1c02843
Web of Science ID

WOS:000752894100103

Author(s)
Avossa, Joshua
Batt, Till
Pelet, Thierry  
Sidjanski, Sacha P.
Schoenenberger, Klaus
Rossi, Rene M.
Date Issued

2021-11-26

Publisher

AMER CHEMICAL SOC

Published in
Acs Applied Nano Materials
Volume

4

Issue

11

Start page

12401

End page

12406

Subjects

Nanoscience & Nanotechnology

•

Materials Science, Multidisciplinary

•

Science & Technology - Other Topics

•

Materials Science

•

transparent mask

•

air filter

•

nanofibers

•

fructose aerosol

•

needleless electrospinning

•

green solvents

•

pa11

•

nylon-11

•

filtration

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
ESSTECH-GE  
Available on Infoscience
February 28, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/185841
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