期刊
CHEMICAL ENGINEERING JOURNAL
卷 415, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.128895
关键词
Extreme wettability; Robustness; Inhibition splash; Controllable transport
资金
- Fundamental Research Funds for the Central Universities [2020GFYD006]
- National Natural ScienceFoundation of China [52001062]
- Opening Project of State Key Laboratory of Light Alloy Casting Technology for Highend Equipment and Natural Science Foundation of Liaoning Province [2020KF1402]
Researchers have developed two complementary extreme wettability coatings with strong mechanical robustness, capable of controlled liquid transport and inhibiting liquid splash through dynamic control on the coating surface.
Extreme wettability coatings with repellent-liquids have attracted considerable attention due to their various advantages. Such coatings are not only restricted by poor robustness, but it is difficult to achieve for controlled liquid transport and inhibiting liquid splash due to allowing the droplet to roll-off and bounce, limiting functional applications. Here, we developed two opposite extreme wettability coaitngs with a superhydrophobicoleophilic coating (SC) and coexisting superoleophobic-superhydrophilic coating (CSC), by changing only the type of fluorination agent. These coatings have shown strong mechanical robustness under sandpaper abrasion, washing, finger-wipe, knife-scratch, and tape-peel due to the synergistic enhancement between native rosin and grafted nanoparticles. Surprisingly, the perfluorinated liquid-infused SC surface could achieve a smart interface for inhibiting splash and recovery of water droplets along with the five-pointed star/branch pattern. Besides, oil droplets could be transported controllable along the desired sinusoidal shape and letter ?YOU? wetted path on the water-infused CSC surface by dynamic control. Undoubtedly, these can have a broad applicability spectrum in the micro-fluidics and precision industry.
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