Abstract
Air pollution is one of the most serious environmental problems that humans are experiencing. Herein, a sandwich-structured fiber nonwoven composite for air filtration was developed by covering both sides of electrospun cellulose acetate (CA)/poly(ethylene oxide) (PEO) fiber membrane with nonwoven fabric. The relationship between the formability of CA/PEO fiber membrane and the concentration of CA/PEO solution was investigated, and the structure and performance of the membrane were studied. When the solution concentration was higher than the entanglement concentration (Ce), a fiber membrane with a bead structure gradually transitioning to a bead-free structure was formed. The filtration performance of the composite was affected by the structure of the fiber membrane. At an airflow velocity of 85 L/min, the quality factor and filtration efficiency of the composite composed of a small amount of bead-structured fiber membrane were 0.01338 Pa−1 and 98.12%, respectively, while those of two-layer nonwoven fabric were 0.00496 Pa−1 and 4.14%, respectively. This proves that CA/PEO fiber membrane can be a potential candidate material for air filtration.
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Acknowledgements
This study was supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions (No. 2014-37) and the Technology Innovation Foundation of National Engineering Laboratory for Modern Silk.
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Conceptualization: [BL]; Methodology: [BL]; Formal analysis and investigation: [BL]; Validation and Data curation: [BL]; Writing—original draft preparation: [BL]; Writing—review and editing: [BL], [XY]; Resources: [XY]; Supervision: [XY].
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Li, B., Yang, X. Preparation and characterization of electrospun cellulose acetate/poly(ethylene oxide) fiber membrane for air filtration. Polym. Bull. 80, 4841–4858 (2023). https://doi.org/10.1007/s00289-022-04262-7
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DOI: https://doi.org/10.1007/s00289-022-04262-7