Preparation of a biomimic superhydrophobic and anti-blood adhesion coating
Firstly, flower-like particles were fabricated by a facile one-step oxidation method. The particles were assembled with a large number of ordered crossed 10–20 nm thickness nano-sheets, and the particle diameter was about 2–3 μm, just like the microprotrusions of taro leaf.
Then flower-like particles together with electropositive chitosan were deposited on substrates via EPD. After further modified with a low surface energy reagent, the coatings showed excellent superhydrophobicity (contact angle about 157°, sliding angle 2.1°).
Anti-blood adhesion property
In addition, the superhydrophobic coating demonstrated mechanical durability, anti-bacteria adhesion and significantly anti-blood adhesion properties. The results indicated that the biomimic superhydrophobic coating might have the potential application in medical instruments for its significantly anti-blood adhesion property.
The study has been published in Progress in Organic Coatings, Volume 140, March 2020.