Virucidal and biodegradable specialty cellulose nonwovens as personal protective equipment against COVID-19 pandemic.
J Adv Res
; 39: 147-156, 2022 07.
Article
in English
| MEDLINE | ID: covidwho-1921031
ABSTRACT
INTRODUCTION:
Face masks are regarded as effective Personal Protective Equipment (PPE) during the COVID-19 pandemic. However, the dominant polypropylene (PP)-based masks are devoid of antiviral/antibacterial activities and create enormous environmental burdens after disposal.OBJECTIVES:
Here we report a facile and potentially scalable method to fabricate biodegradable, breathable, and biocidal cellulose nonwovens (BCNWs) to address both environmental and hygienic problems of commercially available face masks.METHODS:
TEMPO-oxidized cellulose nonwovens are rendered antiviral/antibacterial via covalent bonding with disinfecting polyhexamethylene guanidine or neomycin sulfate through carbodiimide coupling chemistry.RESULTS:
The obtained results showed that the BCNWs have virucidal rate of >99.14%, bactericidal efficiency of >99.51%, no leaching-out effect, and excellent air permeability of >1111.5 mm s-1. More importantly, the as-prepared BCNWs can inactivate SARS-CoV-2 instantly.CONCLUSIONS:
This strategy provides a new platform for the green fabrication of multifunctional cellulose nonwovens as scalable bio-protective layers with superior performance for various PPE in fighting COVID-19 or future pandemics. Additionally, replacing the non-biodegradable non-antimicrobial PP-based masks with the cellulose-based masks can reduce the plastic wastes and lower the greenhouse gas production from the incineration of disposed masks.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Personal Protective Equipment
/
COVID-19
Limits:
Humans
Language:
English
Journal:
J Adv Res
Year:
2022
Document Type:
Article
Affiliation country:
J.jare.2021.11.002
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