High-performance Electret and Antibacterial Polypropylene Meltblown Nonwoven Materials Doped with Boehmite and ZnO Nanoparticles for Air Filtration 


Vol. 23,  No. 7, pp. 1947-1955, Jul.  2022
10.1007/s12221-022-4786-8


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  Abstract

The current pandemic caused by COVID-19 has intensively triggered the development of high-performance air filters. Polypropylene (PP) is widely used as the raw material of meltblown nonwoven materials and is the core layer in air filters, such as masks. In this study, an electret PP meltblown nonwoven with antibacterial activity was developed, and nano boehmite (AlOOH) and nano-ZnO were employed as electret and antibacterial agents, respectively. AlOOH (0.5-2.0 wt%) and ZnO (1.0 wt%) were doped into the PP matrix using a twin-screw extruder, and the resulting masterbatches were applied as raw materials to produce nonwoven materials via a meltblown process. The as-prepared nonwoven samples were characterized by means of SEM, IR and DSC/TG. After corona charging, the filtration efficiency was determined by a filtration tester, charge decay was measured by an infrared electrostatic tester, and the antibacterial properties were evaluated (evaluation method: AATCC 100-2012). A dosage of AlOOH greater than 1.0 wt% endowed the nonwoven material with high filtration efficiency, and 1.0 wt% ZnO brought about antibacterial activity. Corona charging was an effective means to charge the nonwoven electret, and the charges were quicker to decay in air than in a sealed bag. The as-prepared meltblown nonwoven filter is a remarkably promising filter for air filtration.

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  Cite this article

[IEEE Style]

M. Han, H. He, W. Kong, K. Dong, B. Wang, X. Yan, L. Wang, X. Ning, "High-performance Electret and Antibacterial Polypropylene Meltblown Nonwoven Materials Doped with Boehmite and ZnO Nanoparticles for Air Filtration," Fibers and Polymers, vol. 23, no. 7, pp. 1947-1955, 2022. DOI: 10.1007/s12221-022-4786-8.

[ACM Style]

Ming-Chao Han, Hong-Wei He, Wei-Kang Kong, Kun Dong, Bang-Ying Wang, Xu Yan, Li-Ming Wang, and Xin Ning. 2022. High-performance Electret and Antibacterial Polypropylene Meltblown Nonwoven Materials Doped with Boehmite and ZnO Nanoparticles for Air Filtration. Fibers and Polymers, 23, 7, (2022), 1947-1955. DOI: 10.1007/s12221-022-4786-8.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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