Design of an outstanding super-hydrophobic surface by electro-spinning

M.K. Sarkar, K. Bal, F. He, Jintu Fan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

30 Citations (Scopus)

Abstract

A duel-layer super-hydrophobic surface, comprising polyvinylidene fluoride (PVDF) and fluorinated silane molecules (FSM), was engineered using electro-spinning a coating onto the glass. Scanning electron microscopy was used to confirm that, by reducing the percentage of PVDF in the spraying solution, the aspect ratio of the nano-beads could be changed and a sharp bead profile obtained. Energy dispersive spectroscopy was employed to ensure the maximum amount of FSM was present on the surface, which assists in achieving a high Water Contact Angle. Using a two-step process, involving PVDF and FSM, nano-beads, with high aspect ratio, were formed on a rough surface which produced a super-hydrophobic surface with a Water Contact Angle of 170.2° and a very low Water Roll-off Angle (<1°). Such a coating facilitates the speedy run-off of water drops from a surface and has many potential applications in buildings and other areas. © 2011 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)7003-7009
Number of pages7
JournalApplied Surface Science
Volume257
Issue number15
DOIs
Publication statusPublished - 15 May 2011

Keywords

  • Aspect ratio
  • Electro-spinning
  • Nano-beads
  • Nano-fibers
  • Superhydrophobic
  • Water Contact Angle

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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