Bio-inspired highly hydrophobic surface with ecdysis behavior using an organic monolithic resin and titanium dioxide photocatalyst
作者： Tomoya Kato , Norio Ishizuka , Toshihiro Isobe , Akira Nakajima , Akira Fujishima
DOI: 10.1007/S10971-015-3851-9
关键词: Contact angle 、 Photocatalysis 、 Decomposition 、 Polytetrafluoroethylene 、 Composite material 、 Microstructure 、 Titanium dioxide 、 Materials science 、 Rubbing 、 Layer (electronics)
摘要: In order to develop a durable highly hydrophobic surface, biomimetic design was developed by combining an organic monolithic resin, TiO2 photocatalyst, and polytetrafluoroethylene particles. An accelerated weathering resistance examination revealed that the surface maintained water contact angle exceeding 140° for 6 years. Moreover, high antiwear performance confirmed rubbing test. Since resin had co-continual structures with interconnected pores, new microstructure appeared continually removal of damaged surface. On other hand, decomposition compounds photocatalyst enabled self-etching top layer resin. The flowing due rainfall or physical scraping contributed However, film thickness after restoration approximately constant. addition, dynamic hydrophobicity could be improved when pores resins were impregnated perfluorocarbon liquid. Thus, we have addressed essential issues proposed method designing surfaces durability.
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