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Improved hydrophilicity of zinc oxide-incorporated layer-by-layer polyelectrolyte film fabricated by dip coating method

Authors
Journal
Journal of Industrial and Engineering Chemistry
1226-086X
Publisher
Elsevier
Publication Date
Volume
18
Issue
4
Identifiers
DOI: 10.1016/j.jiec.2012.02.003
Keywords
  • Zno
  • Polyelectrolyte
  • Layer-By-Layer
  • Hydrophilicity
  • Water Contact Angle

Abstract

Abstract ZnO nanoparticles suspended in poly(acrylic acid) (PAA) were deposited onto layer-by-layer (LBL) polyelectrolyte (PET) films fabricated from poly(allylamine hydrochloride) (PAH) and PAA by dip coating method. Effect of etching time and concentration of ZnO suspension on hydrophilicity of the LBL-PET films before and after UV irradiation was examined using water contact angle measurement. 2.0M PAH/PAA solutions with a dipping speed of 3.0cm/min provided stable LBL-PET films with thickness sufficient for HCl etching. Glass substrates with the etched LBL-PET film dipped into 0.2wt.% ZnO suspension exhibited the contact angle of 10° after irradiated by UV for 60min.

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