Spreading and structuring of water on superhydrophilic polyelectrolyte brush surfaces

Daiki Murakami, Motoyasu Kobayashi, Taro Moriwaki, Yuka Ikemoto, Hiroshi Jinnai, Atsushi Takahara

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The wetting behavior of superhydrophilic polyelectrolyte brushes was investigated. Reflection interference contrast microscopy demonstrated that the contact angles of water on the polyelectrolyte brushes were extremely low but remained finite in the range of <3. The presence of water molecules was evident, even outside the macroscopic water droplet. These water molecules were confined to the thin brush layers and contained a highly ordered hydrogen bond network, which was identified as structural water. The presence of the thin film and the structural water changed the surface energies, which prevented the complete wetting of the surface.

Original languageEnglish
Pages (from-to)1148-1151
Number of pages4
JournalLangmuir
Volume29
Issue number4
DOIs
Publication statusPublished - 2013 Jan 29
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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    Murakami, D., Kobayashi, M., Moriwaki, T., Ikemoto, Y., Jinnai, H., & Takahara, A. (2013). Spreading and structuring of water on superhydrophilic polyelectrolyte brush surfaces. Langmuir, 29(4), 1148-1151. https://doi.org/10.1021/la304697q