Tuning surface properties of poly(butylene terephthalate) melt blown fibers by alkaline hydrolysis and fluorination

Zaifei Wang, Christopher W. MacOsko, Frank S. Bates

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The wetting properties of poly(butylene terephthalate) (PBT) melt blown fibers were tuned by alkaline hydrolysis and subsequent fluorination. Fiber mats were exposed to a NaOH methanol solution for controlled periods of time at several temperatures, resulting in surface hydrolysis (h-PBT). Subsequent simple solution chemistry was applied to the h-PBT fibers, leading to fluorination of the surface (f-PBT) and the transformation of the wetting properties of the material. Electron microscopy revealed that hydrolysis leads to a textured surface that is retained in the fluorinated product. Sessile drop wetting measurements demonstrated superhydrophilicity for the h-PBT fiber mats and sticky superhydrophobicity with the f-PBT fiber mat.

Original languageEnglish (US)
Pages (from-to)11640-11648
Number of pages9
JournalACS Applied Materials and Interfaces
Volume6
Issue number14
DOIs
StatePublished - Jul 23 2014

Keywords

  • PBT
  • fluorination
  • hydrolysis
  • melt blowing
  • sticky superhydrophobicity
  • superhydrophilicity

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