Enhancing Icephobic Coatings: Exploring the Potential of Dopamine-Modified Epoxy Resin Inspired by Mussel Catechol Groups

A nature-inspired approach was employed through the development of dopamine-modified epoxy coating for anti-icing applications. The strong affinity of dopamine's catechol groups for hydrogen bonding with water molecules at the ice/coating interface was utilized to induce an aqueous quasi-liquid...

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Bibliographic Details
Published in:Biomimetics (Basel, Switzerland) Switzerland), 2024-06, Vol.9 (6), p.349
Main Authors: Koochaki, Mohammad Sadegh, Momen, Gelareh, Lavoie, Serge, Jafari, Reza
Format: Article
Language:English
Subjects:
Catechol
Coatings
Dopamine
Energy consumption
epoxy
Epoxy resins
Fourier transforms
Freezing
Hydrogen
Hydrogen bonding
ice adhesion
Ice nucleation
icephobic coating
Infrared spectroscopy
Low temperature
low-temperature ATR-FTIR
Magnetic resonance spectroscopy
Mechanical properties
Nitrogen
NMR
Nuclear magnetic resonance
Polyethylene glycol
Polymers
Precipitation
quasi-liquid layer
Silicones
Solvents
Spectrum analysis
Water temperature
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Summary:A nature-inspired approach was employed through the development of dopamine-modified epoxy coating for anti-icing applications. The strong affinity of dopamine's catechol groups for hydrogen bonding with water molecules at the ice/coating interface was utilized to induce an aqueous quasi-liquid layer (QLL) on the surface of the icephobic coatings, thereby reducing their ice adhesion strength. Epoxy resin modification was studied by attenuated total reflectance infrared spectroscopy (ATR-FTIR) and nuclear magnetic resonance spectroscopy (NMR). The surface and mechanical properties of the prepared coatings were studied by different characterization techniques. Low-temperature ATR-FTIR was employed to study the presence of QLL on the coating's surface. Moreover, the freezing delay time and temperature of water droplets on the coatings were evaluated along with push-off and centrifuge ice adhesion strength to evaluate their icephobic properties. The surface of dopamine-modified epoxy coating presented enhanced hydrophilicity and QLL formation, addressed as the main reason for its remarkable icephobicity. The results demonstrated the potential of dopamine-modified epoxy resin as an effective binder for icephobic coatings, offering notable ice nucleation delay time (1316 s) and temperature (-19.7 °C), reduced ice adhesion strength (less than 40 kPa), and an ice adhesion reduction factor of 7.2 compared to the unmodified coating.
ISSN:2313-7673
2313-7673
DOI:10.3390/biomimetics9060349