Eco-friendly chitosan@silver/plant fiber membranes for masks with thermal comfortability and self-sterilization

The surgical masks have been essential consumables for public in the COVID-19 pandemic. However, long-time wearing masks will make wearers feel uncomfortable and massive discarded non-biodegradable masks lead to a heavy burden on our environment. In this paper, we adopt degradable chitosan@silver (C...

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Bibliographic Details
Published in:Cellulose (London) 2022-07, Vol.29 (10), p.5711-5724
Main Authors: Zou, Qian, Gai, Yinuo, Cai, Yajuan, Gai, Xiaotang, Xiong, Siwei, Wei, Nanjun, Jiang, Mengying, Chen, Liye, Liu, Yang, Gai, Jinggang
Format: Article
Language:English
Subjects:
Bacteria
Biodegradability
Bioorganic Chemistry
Cellulose
Ceramics
Chemistry
Chemistry and Materials Science
Chitosan
Composites
Coronaviruses
COVID-19
E coli
Electrical resistivity
Glass
Gram-positive bacteria
Heat conductivity
Masks
Membranes
Nanoparticles
Natural Materials
Organic Chemistry
Original Research
Pandemics
Physical Chemistry
Polymer Sciences
Polymers
Polyvinyl alcohol
Raw materials
Room temperature
Silver
Sterilization
Sustainable Development
Thermal comfort
Thermal conductivity
Vegetable fibers
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Summary:The surgical masks have been essential consumables for public in the COVID-19 pandemic. However, long-time wearing masks will make wearers feel uncomfortable and massive discarded non-biodegradable masks lead to a heavy burden on our environment. In this paper, we adopt degradable chitosan@silver (CS@Ag) core–shell fibers and plant fibers to prepare an eco-friendly mask with excellent thermal comfort, self-sterilization, and antiviral effects. The thermal network of CS@Ag core–shell fibers highly improves the in-plane thermal conductivity of masks, which is 4.45 times higher than that of commercial masks. Because of the electrical conductivity of Ag, the fabricated mask can be electrically heated to warm the wearer in a cold environment and disinfect COVID-19 facilely at room temperature. Meanwhile, the in-situ reduced silver nanoparticles (AgNPs) endow the mask with superior antibacterial properties. Therefore, this mask shows a great potential to address the urgent need for a thermally comfortable, antibacterial, antiviral, and eco-friendly mask. Graphical abstract
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-022-04582-x