ArticleJournal of colloid and interface science2021
Flexible-templated imprinting for fluorine-free, omniphobic plastics with re-entrant structures.
Article in Journal of colloid and interface science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Fluorine-free super-repellency to water and organic liquids.Nature reviews. Chemistry · 2026Review
- Durable, Photostable Omniphobic Synthetic Leather Surfaces with Anti-Biofouling Properties for Hygienic Applications.Polymers · 2024Article
- Enhanced Anti-Wetting Methods of Hydrophobic Membrane for Membrane Distillation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023Review
- Air bubble removal: Wettability contrast enabled microfluidic interconnects.Sensors and actuators. B, Chemical · 2022Article
- A High-adhesion Binding Strategy for Silica Nanoparticle-based Superhydrophobic Coatings.Colloids and surfaces. A, Physicochemical and engineering aspects · 2021Article
- A strategy for preparing controllable, superhydrophobic, strongly sticky surfaces using SiORSC advances · 2021Article
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Authors and funding
6 authors.
Funding
Abstract
hypothesisCompared to vertical micro-pillars, re-entrant micro-structures exhibited superior omniphobicity for suspending liquids to Cassie-Baxter state. However, the existing re-entrant structures rely on complex multi-step deposition and etching procedures. The conventional, rigid-templated imprinting would instead damage the re-entrant structures. This leads to the question: is it possible to preserve the re-entrant curvatures by a flexible-templated imprinting? EXPERIMENTS: We facilely imprinted the re-entrant structures on a plastic substrate using a flexible nylon-mesh template. The effect of imprinting time (15-35 min), temperature (110-120 °C) and pressure (15-50 Bar) was investigated. To further improve the liquid-repellency and abrasion resistance, the silica nanoparticles (30-650 nm) along with epoxy resin binder (10 mg/mL) were pre-coated.
findingsA one-step imprinting is sufficient to fabricate the re-entrant structures by utilizing flexible nylon-mesh template, without damaging the imprinted structures after the demolding process. The pre-coated silica nanoparticles and epoxy resin (1) improved liquid repellency by introducing hierarchical surface structures (e.g. contact angle hysteresis of olive oil reduced > 10°), and (2) acted as a protective layer against mechanical abrasion (omniphobicity maintained after 25 cycles, ~1.6 kPa sand paper abrasion). Additionally, the fluorine-free post-treatment was sufficient for the omniphobicity on the obtained plastic structures.
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