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Wet self-cleaning of superhydrophobic microfiber adhesives formed from high density polyethylene

0720101014 添加于 2012-11-6 22:22 | 1269 次阅读 | 0 个评论

作者
Lee J, Fearing RS
摘要
Biologically inspired adhesives developed for switchable and controllable adhesion often require repetitive uses in general, dirty, environments. Superhydrophobic microstructures on the lotus leaf lead to exceptional self-cleaning of dirt particles on nonadhesive surfaces with water droplets. This paper describes the self-cleaning properties of a hard-polymer-based adhesive formed with high-aspect-ratio microfibers from high-density polyethylene (HDPE). The microfiber adhesive shows almost complete wet self-cleaning of dirt particles with water droplets, recovering 98% of the adhesion of the pristine microfiber adhesives. The low contact angle hysteresis indicates that the surface of microfiber adhesives is superhydrophobic. Theoretical and experimental studies reveal a design parameter, length, which can control the adhesion without affecting the superhydrophobicity. The results suggest some properties of biologically inspired adhesives can be controlled independently by adjusting design parameters.
详细资料
- 文献种类: Journal Article
- 期刊名称: Langmuir : the ACS Journal of Surfaces and Colloids
- 期刊缩写: Langmuir
- 期卷页: 2012年第28卷第43期 15372-15377页
- 地址: Mechatronics, Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, S. Korea
- ISBN: 0743-7463
学科领域自然科学 » 化学
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