Author:
Li Yuzhu,Gao Hang,Ma Yunhai,Chen Donghui
Abstract
AbstractApplying hot-embossing technology, a simple and cost-effective method for the fabrication of microstructured High Density Polyethylene (HDPE) surfaces with a robust superhydrophobic wetting state is proposed. Micro-meshes and micro-grooves in the flexible template are filled by the PE melt in the hot embossing process. Subsequently, a two-stage microstructure on the PE film surface is formed. This PE film exhibits a contact angle of 151.8° ± 2° and roll-off angle of > 90° when a 5 µL water droplet is dropped on its surface. Water pinning ability on the surface is figured out and roll-off angles are as a quadratic function of specified water droplet volume. Specifically, a 356 µN water pinng force appears on the HDPE film due to the solid-vapor composite interface on its surface. Meanwhile, self-cleaning and immersion tests reveal that the HDPE surface with micro-pillars exhibit robust Cassie impregnating wetting state against external pressure. The proposed method for facial fabrication of microstructured surfaces is an appropriate candidate for the development of droplet manipulation and functional biomimetic polymer surfaces.
Publisher
Springer Science and Business Media LLC
Subject
Bioengineering,Biophysics,Biotechnology
Reference45 articles.
1. Koch, K, Barthlott W. Superhydrophobic and superhydrophilic plant surfaces: An inspiration for biomimetic materials. Philosophical Transactions of the Royal Society of London Series A, 2009, 367, 1487–1509.
2. Liu M J, Wang S T, Lei J. Nature-inspired superwettability systems. Nature Reviews Materials, 2017, 2, 17036.
3. Ensikat H J, Ditsche-Kuru P, Neinhuis C, Barthlott W. Superhydrophobicity in perfection: The outstanding properties of the lotus leaf. Beilstein Journal of Nanotechnology, 2011, 2, 152–161.
4. Poladian L, Wickham S, Lee K, Large M C. Iridescence from photonic crystals and its suppression in butterfly scales. Journal of the Royal Society Interface, 2009, 6, 233–242.
5. Bai F, Wu J T, Gong G M, Guo L. Biomimetic “water strider leg” with highly refined nanogroove structure and remarkable water-repellent performance. ACS Applied Materials & Interfaces, 2014, 6, 16237–16242.
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