4.7 Article

Pump-inject antimicrobial and biodegradable aerogel as mask intermediate filter layer for medical protection of air filtration

Journal

MATERIALS TODAY SUSTAINABILITY
Volume 19, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.mtsust.2022.100211

Keywords

Intermediate filter layer of the mask; Air filter; Antimicrobial agent; Biodegradability; Pump-injection filter; Aerogel network

Funding

  1. National Natural Science Foundation of China [81571829]
  2. Natural Science Foundation of Gansu Province [20JR10RA597]
  3. Fundamental Research Funds for the Central Universities [lzujbky-2021-ct08, lzujbky-2021-kb27]
  4. Open Project of State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences [LSL-1907]
  5. Open Subject Foundation of Key Laboratory of Dental Maxillofacial Reconstruction and Biological Intelligence Manufacturing [20JR10RA653-ZDKF20210101]
  6. Gansu Province Health Industry Research Plan Project [GSWSKY2017-71]

Ask authors/readers for more resources

In this study, a new mask material with excellent performance, such as environmental friendliness, degradability, and good breathability, was developed to replace traditional melt-blown fabric. The mask material combines physical and mechanical filtration, adsorption of nano-silver, and antimicrobial purification for comprehensive air purification and filtration.
Melt-blown fabric masks have the drawbacks of the supply-demand imbalance, the risks of respirable infection, and environmental pollution. Therefore, it is urgently needed to exploit a new mask material with excellent air-filtration, antimicrobial, and degradable properties. In this study, a new sodium algi-nate (SA)/nanosilver composite mask intermediate filter layer (named as SAg air filter) is prepared by a simple and quantifiable pumping-injecting method to substitute the traditional melt-blown fabric. Subsequently, the prepared SAg air filter is softened with glycerol solution to improve the flexibility. Compared with the intermediate filter layer of the melt-blown fabric mask, the SAg air filter has more excellent performances, such as environmental friendliness, degradability, large-scale preparation, stable and long-lasting air filtration, good impermeability, as well as suitable breathability. What's more, the air filter combines physical and mechanical filtration, Coulomb adsorption of nano-silver, and antimicrobial air purification through the SAg aerogel network to ensure more comprehensive air purification and filtration. The novel SAg air filter will have a broad application prospect in the mask market, and eventually extend the new application of SA aerogel in the air filtration field.(c) 2022 Elsevier Ltd. All rights reserved.

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