Omniphobic Etched Aluminum Surfaces with Anti-Icing Ability.,Langmuir

当前位置： X-MOL 学术 › Langmuir › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Omniphobic Etched Aluminum Surfaces with Anti-Icing Ability.
Langmuir ( IF 3.7 ) Pub Date : 2020-08-29 , DOI: 10.1021/acs.langmuir.0c01324
Marta Fenero ₁ , Mato Knez _{2,

3} , Iva Saric ₄ , Mladen Petravic ₄ , Hans Grande ₁ , Jesús Palenzuela ₁

Affiliation

In this work, omniphobic surfaces are developed by combining chemical etching and surface modification of aluminum. In the first step, hierarchical micro/nanostructuring is carried out by chemical etching. Thereafter, a perfluoropolyether is grafted onto the corrugated aluminum substrate, decreasing its surface free energy and turning the system omniphobic. The morphology and chemical composition of the developed surfaces are characterized. We observed a low affinity toward liquids, regardless of their chemical nature and surface tension. The surface shows superhydrophobic properties with a water contact angle of 160° and simultaneously strong oleophobic properties with a hexadecane contact angle of 141°. Furthermore, these omniphobic surfaces significantly delay the freezing time of water droplets to 5100 s, which is about 20-fold of the freezing time on pristine aluminum (260 s), and they even inhibit ice growth by repelling the incoming droplets prior to ice nucleation.

中文翻译：

具有防结冰功能的全蚀蚀刻铝表面。

在这项工作中，通过结合化学蚀刻和铝的表面改性来开发全憎表面。在第一步中，通过化学蚀刻进行分层的微/纳米结构化。此后，将全氟聚醚接枝到波纹铝基板上，从而降低其表面自由能，并使系统变得疏油。表征了显影表面的形态和化学组成。我们观察到对液体的亲和力低，无论其化学性质和表面张力如何。该表面显示出超疏水性，水接触角为160°，同时具有强疏油性，十六烷接触角为141°。此外，这些憎水表面大大降低了水滴的冻结时间至5100 s，

更新日期：2020-09-22

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11