Effect of Low-Pressure Plasma Surface Modification on Filtration Performance of Chitosan Nanofibrous Respiratory Filter 


Vol. 24,  No. 3, pp. 947-958, Mar.  2023
10.1007/s12221-023-00029-7


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  Abstract

Low pressure drop is highly desirable for respiratory fi lters. Surface activation plays an important role to enhance the fi ltration performance of respiratory fi lters. In this study, a three-layer composite respiratory fi lter was developed using a combination of polypropylene (PP) nonwoven layers and chitosan nanofi bres (CSNF) with variable coating time (h) during the electrospinning process. To study the impact of surface activation on fi ltration performance, the outer surface of all the samples were modifi ed using low-pressure plasma treatment. Filtration performance testing was conducted to determine the fi ltration effi ciency (%), pressure drop (Pa), and quality factor (Q) results, before and after the surface treatment. The maximum values of fi ltration effi ciency and quality factor achieved were 99.99% and 0.068, respectively. The lowest value of the pressure drop was 16.12 Pa. All the low-pressure plasma-treated samples showed higher fi ltration effi ciency and quality factor compared to untreated samples due to a more eff ective capturing mechanism. However, pressure drop results indicated no signifi cant diff erence. Furthermore, the decay of plasma treatment impact was analysed by using drop shape analysis method to measure the water contact angle on the surface of the samples. Results showed a gradual decrease in surface modifi cation impact and the surface of the treated samples changed from hydrophilic to hydrophobic with the passage of time.

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  Cite this article

[IEEE Style]

M. T. Khawar, H. Gong, Q. Zia, H. z. H. Nawaz, J. Li, "Effect of Low-Pressure Plasma Surface Modification on Filtration Performance of Chitosan Nanofibrous Respiratory Filter," Fibers and Polymers, vol. 24, no. 3, pp. 947-958, 2023. DOI: 10.1007/s12221-023-00029-7.

[ACM Style]

Muhammad Tauseef Khawar, Hugh Gong, Qasim Zia, Hafi za Hifza Nawaz, and Jiashen Li. 2023. Effect of Low-Pressure Plasma Surface Modification on Filtration Performance of Chitosan Nanofibrous Respiratory Filter. Fibers and Polymers, 24, 3, (2023), 947-958. DOI: 10.1007/s12221-023-00029-7.

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