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Wednesday, 03 June 2020
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Raw materials & technologies, Technologies

Preparation of a biomimic superhydrophobic and anti-blood adhesion coating

Friday, 8 May 2020

A new work describes a biomimic superhydrophobic coating based on one new flower-like micro-nano particles via electrophoretic deposition (EPD) technique.

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.

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The superhydrophobic coating demonstrated mechanical durability, anti-bacteria adhesion and significantly anti-blood adhesion properties. Image source: branislavp - stock.adobe.com (symbol image).

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