Super Water-repellent Surfaces Resulting from Fractal Structure. II.
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- SHIBUICHI Satoshi
- Tokyo Research Center, Kao Corporation
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- ONDA Tomohiro
- Recording and Imaging Science Laboratories, Kao Corporation
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- SATOH Naoki
- Tokyo Research Center, Kao Corporation
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- TSUJII Kaoru
- Tokyo Research Center, Kao Corporation
Bibliographic Information
- Other Title
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- フラクタル構造による超はっ水表面 (第2報)
- フラクタル コウゾウ ニヨル チョウハッスイ ヒョウメン ダイ 2ホウ
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Abstract
A super water-repellent surface with maximum contact angle of 174° was previously obtained by solidifing a wax, alkyl ketene dimer, from a melt. This surface was fractal with dimension of D≈2.3. The surface area magnification factor became quite large due to the fractal structure and then the contact angle of a water droplet also very large. This paper is an extension of the study for clarifying why the alkyl ketene dimer forms a fractal surface. Crystallization of the alkyl ketene dimer from the melt was observed by polarizing optical microscope and DSC measurement. Attempt was also made to develop a super water-repellent paint containing the alkyl ketene dimer. Flake-like crystals of the alkyl ketene dimer were observed on the painted surface following drying of the paint-layer, and super water-repellency of the surface was noted. Through the use of triacylglycerols and dialkyl ketones, the super-water repellent surfaces have been also obtained. It has been experimentally shown that any wax with a contact angle exceeding 90° become super water repellent by making the surface sufficiently rough.
Journal
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- Journal of Japan Oil Chemists' Society
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Journal of Japan Oil Chemists' Society 46 (6), 649-659,713, 1997
Japan Oil Chemists' Society
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Details 詳細情報について
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- CRID
- 1390282679070158848
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- NII Article ID
- 10002272735
- 10003256355
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- NII Book ID
- AN10512582
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- ISSN
- 18841996
- 13418327
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- NDL BIB ID
- 4237601
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed