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Necklace-like Fiber Composite Membrane for High-efficiency Particulate Matter Capture

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  • Yingchun Su, Harbin Institute of Technology
  • ,
  • Zhijia Zhang, Harbin Institute of Technology
  • ,
  • Zegao Wang
  • ,
  • Menglin Chen
  • MD Dong
  • Xiaojun Han, Harbin Institute of Technology

The necklace-like fiber membranes are fabricated using electrospinning technique for high-efficiency PM (particulate matter) capture. Poly-N,N′-[(4,5-dihydroxy-1,2 phenylene)bis(methylene)]bisacrylamide (POHABA) nanospheres as “pearls” are embedded in poly(ethylene oxide) (PEO) and poly(vinylpyrrolidone) (PVP) matrix substrates to make necklace-like fibers. The reason for choosing POHABA nanospheres is due to their broad-spectrum inhibitory effect on bacteria. The diameters of three POHABA nanospheres are controlled to be 190 ± 50, 364 ± 39 and 467 ± 65 nm, respectively. The necklace-like structures become more pronounced with the increase of POHABA diameter. The PM 2.5 removal efficiencies of PEO necklace-like fiber membranes obtained with electrospinning time of half an hour are in the range from 88.0 to 92.5%. Under the same fabrication conditions, the PEO/POHABA-467 fiber membrane displays better capture efficiency than that of PVP/POHABA-467 fiber membrane. Using thicker PEO/POHABA-467 filter membrane (electrospinning for one hour), excellent removal efficiency of PM 2.5 (99.2%) is achieved, which is better than that obtained from other membranes and even commercial QMA filter (Whatman). The necklace-like fiber membranes have a great potential in the fields of aero filter and mask.

TidsskriftApplied Surface Science
Sider (fra-til)220-226
Antal sider7
StatusUdgivet - 2017

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