Novel Petal Effect of Hafnia Films Prepared in an Aqueous Solution and Containing Hydroxy Acids

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概要

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• Transparent hafnia films containing glycolic acid or lactic acid as a hydroxy acid were successfully prepared in aqueous solutions. The films showed not only hydrophobicity but also high adhesive force to water droplets. The contact angles of the water droplets were 90--94°. Droplets on the surface maintained their shapes even when the films were turned upside down. It is concluded that the water droplets were bonded to the surface by the hydrogen bonding force of the COOH and OH groups of glycolic acid on the hydrophobic hafnia films, resulting in a novel petal effect because of the flat film surface.

• 2010-12-25

著者

• Nishide Toshikazu

  Department Of Industrial Chemistry College Of Engineering Nihon University

• Tonosaki Aki

  Department of Chemical Biology and Applied Chemistry, College of Engineering, Nihon University, Koriyama, Fukushima 963-8642, Japan

• Nishide Toshikazu

  Department of Chemistry, Faculty of Science, Tohoku University

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