Abstract
Hydrophilic polypyrrole-coated copper nanoneedles (PPy-CuNDs) were synthesized and utilized to construct a superhydrophobic surface on a polyethylene terephthalate fabric (PET) by using the spray-coating technique. The morphology of the as-synthesized PPy-CuNDs can be facilely tuned by changing the concentration of the reducing agent: hydrazine monohydrate. The CuNDs with well-defined nanocrystalline structures and nanoscale thick, rough PPy coating layers were formed simultaneously in one pot. The PPy-CuNDs self-assembled into an entangled, stacking nanocarpet on the surface of the PET fabric, and they eventually formed a reentrant surface texture similar to that of chrysanthemum leaves. The PPy-CuND-PET surface initially showed good superhydrophobic properties, but a fast transition from the superhydrophobic state to the highly adhesive state was observed. The underlying mechanism of this transition and its potential applications were proposed in the context.
Original language | English |
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Article number | 347 |
Journal | Coatings |
Volume | 10 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Apr 2020 |
Keywords
- Bioinspired
- Copper
- Hydrophilic
- Nanoneedle
- Polypyrrole
- Superhydrophobic surface
ASJC Scopus subject areas
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry