Journal
PROGRESS IN ORGANIC COATINGS
Volume 140, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2019.105498
Keywords
Titanium phosphate; Micro-nano particle; Superhydrophobic; EPD; Anti-blood adhesion
Funding
- Shaanxi Natural Science Foundation [2018JM4043]
- Seed Foundation of Innovation and Creation for Graduate Students in Northwestern Polytechnical University [Z2016044]
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Bioinspired surfaces with special wettability have attracted considerable interest in both fundamental research and industry applications. This work described 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 mu m, just like the micro-protrusions of taro leaf. Furthermore, possible formation mechanism of the particles discussed. 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 degrees, sliding angle 2.1 degrees). 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.
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