Dependence of the fiber diameter on quality factor of filters fabricated with meta-aramid nanofibers

Han Bin Kim, Woo Jin Lee, Seuk Cheun Choi, Ki Bong Lee, Myong Hwa Lee

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Bag filters are generally used to remove particulate matter from the dust-laden flue gas exhausted from combustors. Recently, great effort has been expended to improve the performance of bag filters by coating the filter surface with nanofibers. In this study, meta-aramid nanofibers with high thermal durability were produced by an electrospinning process, and the effect of fiber diameter on the filter quality factor was theoretically and experimentally investigated. Electrospun filters with mean fiber sizes of 333 nm and 569 nm were successfully prepared by controlling the electrospinning parameters. The filters had high mechanical and chemical durability, as per the results of thermogravimetric analyzer (TGA), X-ray diffraction (XRD), Fourier-transform infrared (FT-IR), and a tensile strength analyses. In addition, the particle collection efficiency and pressure drop of the filters increased as the fiber diameter decreased. The filter quality factor, determined by the relationship between the collection efficiency and the pressure drop, increased slightly with the decrease in fiber diameter, although the experimental results were slightly different from the theoretical results.

Original languageEnglish
Pages (from-to)332-341
Number of pages10
JournalSeparation and Purification Technology
Publication statusPublished - 2019 Sept 1


  • Air filtration
  • Bag filter
  • Electrospinning
  • Polyamide nanofiber
  • Thermal stability

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation


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