| Title |
Development of carbon-nanodot-loaded PLA nanofibers and study of their barrier performance for medical applications / |
| Authors |
Munir, Muhammad Usman ; Mayer-Gall, Thomas ; Gutmann, Jochen S ; Ali, Wael ; Etemad-Parishanzadeh, Omid ; Khanzada, Haleema ; Mikučioniene, Daiva |
| DOI |
10.3390/nano13071195 |
| Full Text |
|
| Is Part of |
Nanomaterials.. Basel : MDPI. 2023, vol. 13, iss. 7, art. no. 1195, p. 1-13.. ISSN 2079-4991 |
| Keywords [eng] |
antimicrobial activity ; carbon nanodots ; electrospinning ; nanofibers ; personal protective equipment ; poly lactic acid ; sustainability |
| Abstract [eng] |
The COVID-19 pandemic has increased the usage of personal protective equipment (PPE) all round the world and, in turn, it has also increased the waste caused by disposable PPE. This has exerted a severe environmental impact, so in our work, we propose the utilization of a sustainable electrospun nanofiber based on poly lactic acid (PLA), as it is biobased and conditionally degradable. We optimized the weight percentage of the PLA-precursor solution and found that 19% PLA produces fine nanofibers with good morphology. We also introduced carbon nanodots (CNDs) in the nanofibers and evaluated their antibacterial efficiency. We used 1, 2, 3, and 4% CNDs with 19% PLA and found increased antibacterial activity with increased concentrations of CNDs. Additionally, we also applied a spunbond-nanofiber layered assembly for the medical face masks and found that with the addition of only 0.45 mg/cm2 on the nonwoven sheet, excellent particle filtration efficiency of 96.5% and a differential pressure of 39 Pa/cm2 were achieved, meeting the basic requirements for Type I medical face masks (ASTM-F2100). |
| Published |
Basel : MDPI |
| Type |
Journal article |
| Language |
English |
| Publication date |
2023 |
| CC license |
|
