Nanotechnology Center, Applied Science Department, Chemistry Department, University of Arkansas at Little Rock, Arkansas 72204, United States.
Langmuir. 2011 Aug 16;27(16):9936-43. doi: 10.1021/la201548k. Epub 2011 Jul 22.
We present a simple method to produce carbon nanotube-based films with exceptional superhydrophobicity and impact icephobicity by depositing acetone-treated single-walled carbon nanotubes on glass substrates. This method is scalable and can be adopted for any substrate, both flexible and rigid. These films have indicated a high contact angle, in the vicinity of 170°, proved both by static and dynamic analysis processes. The dynamic evaporation studies indicated that a droplet deposited on the treated films evaporated in the constant contact angle mode for more than 80% of the total evaporation time, which is definitely a characteristic of superhydrophobic surfaces. Furthermore, the acetone-functionalized films showed a strong ability to mitigate ice accretion from supercooled water droplets (-8 °C), when the droplets were found to bounce off the films tilted at 30°. The untreated nanotube films did not indicate similar behavior, and the supercooled water droplets remained attached to the films' surfaces. Such studies could be the foundation of highly versatile technologies for both water and ice mitigation.
我们提出了一种简单的方法，通过将经过丙酮处理的单壁碳纳米管沉积在玻璃基底上来制备具有优异超疏水性和抗冰冲击性的基于碳纳米管的薄膜。该方法具有可扩展性，可以应用于任何基底，无论是柔性的还是刚性的。这些薄膜的接触角非常高，接近 170°，这一点通过静态和动态分析过程都得到了证明。动态蒸发研究表明，在处理过的薄膜上沉积的液滴在超过 80%的总蒸发时间内以恒接触角模式蒸发，这绝对是超疏水表面的特征。此外，功能化的丙酮薄膜具有很强的抗从过冷水滴（-8°C）结冰的能力，当水滴在 30°倾斜时被发现从薄膜上弹开。未经处理的纳米管薄膜没有表现出类似的行为，过冷的水滴仍然附着在薄膜表面上。这些研究可能为水和冰缓解的多功能技术奠定基础。
