Fabrication of a super-hydrophobic nanofibrous zinc oxide film surface by electrospinning

Bin Ding, Tasuku Ogawa, Jinho Kim, Kouji Fujimoto, Seimei Shiratori

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

We report a new approach for fabricating a super-hydrophobic nanofibrous zinc oxide (ZnO) film surface. The pure poly(vinyl alcohol) (PVA) and composite PVA/ZnO nanofibrous films can be obtained by electrospinning the PVA and PVA/zinc acetate solutions, respectively. After the calcination of composite fibrous films, the inorganic fibrous ZnO films with a reduced fiber diameter were fabricated. The wettability of three kinds of fibrous film surfaces were modified with a simple coating of fluoroalkylsilane (FAS) in hexane. The resultant samples were characterized by field emission scanning electron microscopy (FE-SEM), water contact angle (WCA), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). It was found that the pure PVA fibrous films maintained the super-hydrophilic surface property even after the FAS modification. Additionally, the WCA of composite fibrous films was increased from 105 to 132° with the coating of FAS. Furthermore, the surface property of inorganic ZnO fibrous films was converted from super-hydrophilic (WCA of 0°) to super-hydrophobic (WCA of 165°) after the surface modification with FAS. Observed from XPS data, the hydrophobicity of FAS coated various film surfaces were found to be strongly affected by the ratio of fluoro:oxygen on the film surfaces.

Original languageEnglish
Pages (from-to)2495-2501
Number of pages7
JournalThin Solid Films
Volume516
Issue number9
DOIs
Publication statusPublished - 2008 Mar 3

Fingerprint

Zinc Oxide
Electrospinning
Zinc oxide
zinc oxides
Oxide films
oxide films
Fabrication
fabrication
Contact angle
Water
surface properties
water
Surface properties
composite materials
Composite materials
X ray photoelectron spectroscopy
Zinc Acetate
photoelectron spectroscopy
coatings
Coatings

Keywords

  • Electrospinning
  • Nanofiber
  • Super-hydrophobic film
  • ZnO

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Fabrication of a super-hydrophobic nanofibrous zinc oxide film surface by electrospinning. / Ding, Bin; Ogawa, Tasuku; Kim, Jinho; Fujimoto, Kouji; Shiratori, Seimei.

In: Thin Solid Films, Vol. 516, No. 9, 03.03.2008, p. 2495-2501.

Research output: Contribution to journalArticle

Ding, Bin ; Ogawa, Tasuku ; Kim, Jinho ; Fujimoto, Kouji ; Shiratori, Seimei. / Fabrication of a super-hydrophobic nanofibrous zinc oxide film surface by electrospinning. In: Thin Solid Films. 2008 ; Vol. 516, No. 9. pp. 2495-2501.
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