Journal
POLYMER
Volume 251, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2022.124893
Keywords
Molding; Laser beam machining; Superhydrophobic surface; Carbon soot; Thermoplastic polymer
Categories
Funding
- National Research Foundation of Korea (NRF) [NRF-2021R1A2C1008248]
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Superhydrophobic surfaces with two-level micro-nano hierarchical polymer structures were successfully fabricated, showing superhydrophobicity with mechanical robustness.
The fragility of superhydrophobic surfaces limits applicability; therefore, development of hierarchical surface structure is an important strategy to achieve more robust superhydrophobic surfaces. Here, two-level micro-nano hierarchical polymer surfaces were fabricated by compression molding. Microstructured aluminum molds were produced through laser beam machining and then coated with carbon soot nanoparticles from acetone combustion. The nanostructure of soot nanoparticles combined with the mold microstructure was transferred onto the polypropylene sheet by compression molding. The replicated surface demonstrated superhydrophobicity with contact angles greater than 170 degrees and sliding angles less than 10 degrees. The mechanical robustness was confirmed with abrasion tests and adhesion tests.
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