Air filtration performance enhancement of PTFE foam–coated filters at high temperatures via secondary strongly adhering PTFE nanofiber coatings

Seunghwan Ahn, Euijin Shim, Yeonsang Kim, Youn Sang Bae, Hyeonjin Eom

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

A PTFE nanofiber–coated PG filter (that is, a modified PTFE foam–coated glass fabric filter (PG filter)) is developed with superior particulate matter (PM) collection efficiency under high-temperature conditions. A modified electrospinning solution is used to coat the PTFE foam surface of the PG filter with nanofibers (precursors to PTFE nanofibers); this electrospinning solution contains poly(ethylene oxide) whose amphipathicity promotes adhesion between the nanofibers and PTFE foam. Consequently, a PTFE NF–coated PG filter shows enhanced adhesion between the PTFE nanofibers and PTFE-foam surface of PG filter. The PM collection efficiency of and pressure drop across the proposed PTFE nanofiber–coated PG filter were investigated at various temperatures; the air filtration performance of filter exceeds that of a conventional PG filter. In particular, the PM1.0 collection efficiency of the PTFE nanofiber–coated PG filter is 1.13 times higher than that of a PG filter at 280 °C.

Original languageEnglish
Pages (from-to)914-922
Number of pages9
JournalProcess Safety and Environmental Protection
Volume162
DOIs
Publication statusPublished - 2022 Jun

Bibliographical note

Publisher Copyright:
© 2022 The Institution of Chemical Engineers

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • General Chemical Engineering
  • Safety, Risk, Reliability and Quality

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