Air Filtration Membranes: Fabrication, Structures, Characteristics and Applications

Particulate matter and hazardous gases pollute the air, endangering people’s health and safety. Nanofibrous membrane has been extensively studied and implemented in the field of air purification as a reliable filter media for particulate matter. Electrospinning is the most advantageous and effective method for fabricating nanofibrous membranes because of its benefits of predictable process, high production efficiency, and low cost. Advanced electrospinning techniques, such as needleless, multi-needle, and solvent-free electrospinning, have been shown to be capable of producing nanofibrous membranes at a high pace, laying the groundwork for large-scale manufacturing and wider applications. The electrospun membranes, which are formed of various materials and have unique architectures, have good PM2.5 filtration performance with minimal pressure drop and multi-functions such as thermal stability, antibacterial capabilities, and biodegradability. Environmental protection and healthcare products against PM2.5, such as filtration masks and filters, use these membranes. This chapter provides an overview of electrospinning procedures, diverse electrospun nanofibrous membrane structures, unique properties and functionalities of the manufactured membranes, and a summary of outdoor and indoor PM filtration applications.

Author(S) Details

Peng Zhao
The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China and Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China.

Chenxin Lyu
The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China and Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China.

Jun Xie
The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China and Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China.

Chengqian Zhang
The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China and Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China.

Jianzhong Fu
The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China and Key Lab of 3D Printing Process and Equipment of Zhejiang Province, Zhejiang University, Hangzhou 310027, China.

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