Effects of hydrophobizing methods of surfaces on the interaction in aqueous solutions

Naoyuki Ishida, Naotoshi Kinoshita, Minoru Miyahara, Ko Higashitani

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)

Abstract

The hydrophobic interaction between the surfaces hydrophobized by the adsorption of STAC in a STAC solution (system I) and the interaction between the surfaces hydrophobized by the reaction with OTS in water (system II) were investigated using an atomic force microscope, and their difference was compared. Clear differences of the interaction between systems I and II were found with respect to the force curves and the morphology of the surfactants adsorbed on the surfaces. It is postulated that the hydrophobic interaction for system II is attributable to the cavity bridging between the surfaces, but that for system I it is originated from a different mechanism. It is also implied that the existence of the surfactants in the bulk will play an important role for the hydrophobic interaction.

Original languageEnglish
Pages (from-to)387-393
Number of pages7
JournalJournal of Colloid And Interface Science
Volume216
Issue number2
DOIs
Publication statusPublished - Aug 15 1999
Externally publishedYes

Keywords

  • Adsorption
  • Atomic force microscope
  • Cavity bridging
  • Hydrophobic interaction
  • Modification

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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