“…While the prepared SHP Ni-G-MA film retains its superhydrophobicity up to 65 cyclic tape peeling, indicating strong binding between the myristic acid and the deposited rough Ni-G coat. The prepared SHP Ni-G-MA has resistance to a cyclic tape peeling greater than many of the reported values 18 , 49 , 50 . Figure 5 Effect of cyclic tape peeling on the CAs and SAs of copper grafted by Ni-MA film and Ni-G-MA film.…”
Section: Resultsmentioning
confidence: 58%
“…On the other hand, electrodeposition is a simple way to produce SHP coatings on metals, metal oxides, and conducting polymers 13 , 14 . Electrodeposition has become a competitive method to produce superhydrophobic surfaces owing to its advantages, including scalability, ease of control, simplicity, low cost, and fabrication of a robust SHP coating 13 , 15 – 18 .…”
In this work, Ni and Ni-graphene, Ni-G, films were electrodeposited on copper substrate by potentiostatic deposition. To achieve superhydrophobicity, myristic acid, MA, was used to modify the surface of the electrodeposited coatings. The manufactured Ni film modified with myristic acid, Ni-MA, and the Ni-G film modified with myristic acid, Ni-G-MA, show excellent superhydrophobic, SHP, properties with a water contact angle of 159° and 162°, respectively. The surface morphology of the prepared SHP films was investigated using a Scanning Electron Microscope, and the results revealed micro-nano structures in both Ni-MA and Ni-G-MA films. The Fourier Transform Infrared Spectrophotometer data showed that the Ni-MA and Ni-G-MA films were successfully grafted on the copper metal. The Ni-G-MA film possessed higher chemical stability and mechanical abrasion resistance than Ni-MA. The Ni-MA and Ni-G-MA films exhibit long-term durability in the outdoor environment for more than four months. The potentiodynamic polarization and electrochemical impedance spectroscopy results demonstrated that the SHP films on the copper substrate exhibit remarkable corrosion resistance in 0.5 M NaCl.
“…While the prepared SHP Ni-G-MA film retains its superhydrophobicity up to 65 cyclic tape peeling, indicating strong binding between the myristic acid and the deposited rough Ni-G coat. The prepared SHP Ni-G-MA has resistance to a cyclic tape peeling greater than many of the reported values 18 , 49 , 50 . Figure 5 Effect of cyclic tape peeling on the CAs and SAs of copper grafted by Ni-MA film and Ni-G-MA film.…”
Section: Resultsmentioning
confidence: 58%
“…On the other hand, electrodeposition is a simple way to produce SHP coatings on metals, metal oxides, and conducting polymers 13 , 14 . Electrodeposition has become a competitive method to produce superhydrophobic surfaces owing to its advantages, including scalability, ease of control, simplicity, low cost, and fabrication of a robust SHP coating 13 , 15 – 18 .…”
In this work, Ni and Ni-graphene, Ni-G, films were electrodeposited on copper substrate by potentiostatic deposition. To achieve superhydrophobicity, myristic acid, MA, was used to modify the surface of the electrodeposited coatings. The manufactured Ni film modified with myristic acid, Ni-MA, and the Ni-G film modified with myristic acid, Ni-G-MA, show excellent superhydrophobic, SHP, properties with a water contact angle of 159° and 162°, respectively. The surface morphology of the prepared SHP films was investigated using a Scanning Electron Microscope, and the results revealed micro-nano structures in both Ni-MA and Ni-G-MA films. The Fourier Transform Infrared Spectrophotometer data showed that the Ni-MA and Ni-G-MA films were successfully grafted on the copper metal. The Ni-G-MA film possessed higher chemical stability and mechanical abrasion resistance than Ni-MA. The Ni-MA and Ni-G-MA films exhibit long-term durability in the outdoor environment for more than four months. The potentiodynamic polarization and electrochemical impedance spectroscopy results demonstrated that the SHP films on the copper substrate exhibit remarkable corrosion resistance in 0.5 M NaCl.
“…They formulated three key design components that underlie the construction of ideal protective coatings, including functional barrier at the coating surface, interfacial bonding between the passive coating and the substrate, and the transport control of corrosive substances inside the coating. Qing et al 24 developed a robust, eco-friendly, and fluorine-free superhydrophobic coating by hybrid synergistic assembly between natural rosin as an adhesive and TiO 2 hydrophobic nanoparticles. Such coatings allow for easy, large-scale application on arbitrary substrates by spraying or brushing with superior contaminant-repellent properties due to the combination of micro-/nanoscale structures.…”
Antifouling (AF) nanocoatings made of polydimethylsiloxane
(PDMS)
are more cost-efficient and eco-friendly substitutes for the already
outlawed tributyltin-based coatings. Here, a catalytic hydrosilation
approach was used to construct a design inspired by composite mosquito
eyes from non-toxic PDMS nanocomposites filled with graphene oxide
(GO) nanosheets decorated with magnetite nanospheres (GO–Fe3O4 nanospheres). Various GO–Fe3O4 hybrid nanofillers were dispersed into the PDMS resin
through a solution casting method to evaluate the structure–property
relationship. A simple coprecipitation procedure was used to fabricate
magnetite nanospheres with an average diameter of 30–50 nm,
a single crystal structure, and a predominant (311) lattice plane.
The uniform bioinspired superhydrophobic PDMS/GO–Fe3O4 nanocomposite surface produced had a micro-/nano-roughness,
low surface-free energy (SFE), and high fouling release (FR) efficiency.
It exhibited several advantages including simplicity, ease of large-area
fabrication, and a simultaneous offering of dual micro-/nano-scale
structures simply via a one-step solution casting process for a wide
variety of materials. The superhydrophobicity, SFE, and rough topology
have been studied as surface properties of the unfilled silicone and
the bioinspired PDMS/GO–Fe3O4 nanocomposites.
The coatings’ physical, mechanical, and anticorrosive features
were also taken into account. Several microorganisms were employed
to examine the fouling resistance of the coated specimens for 1 month.
Good dispersion of GO–Fe3O4 hybrid fillers
in the PDMS coating until 1 wt % achieved the highest water contact
angle (158° ± 2°), the lowest SFE (12.06 mN/m), micro-/nano-roughness,
and improved bulk mechanical and anticorrosion properties. The well-distributed
PDMS/GO–Fe3O4 (1 wt % nanofillers) bioinspired
nanocoating showed the least biodegradability against all the tested
microorganisms [Kocuria rhizophila (2.047%), Pseudomonas aeruginosa (1.961%), and Candida albicans (1.924%)]. We successfully developed
non-toxic, low-cost, and economical nanostructured superhydrophobic
FR composite coatings for long-term ship hull coatings. This study
may expand the applications of bio-inspired functional materials because
for multiple AF, durability and hydrophobicity are both important
features in several industrial applications.
“…Mobarakeh et al proved that after cycles of icing and deicing, the icephobicity and hydrophobicity of the coatings deteriorate [ 8 , 9 ]. There are also works in which durable hydrophobic coatings have been produced that retain their properties even after abrasion with sandpaper [ 10 , 11 ].…”
Anti-icing coatings have provided a very good alternative to current, uneconomic, active deicing methods, and their use would bring a number of significant benefits to many industries, such as aviation and energy. Some of the most promising icephobic surfaces are those with hydrophobic properties. However, the relationship between hydrophobicity and low ice adhesion is not yet clearly defined. In this work, chemical modification of an epoxy gelcoat with chemical modifiers from the group of double organofunctionalized polysiloxanes (generally called multifunctionalized organosilicon compounds (MFSCs)) was applied. The anti-icing properties of manufactured coatings were determined by means of measurements of shear strength between the ice layer and the modified surface, conducted using a tensile machine. In the work, tests were also performed on the roughness, wettability, and durability of the properties in an aging chamber. It was found that the performed modifications of the coating’s chemical composition by the addition of polysiloxanes enabled us to reduce ice adhesion by 51% and to increase the water contact angle by 14% in comparison to the neat gelcoat. A reduction in ice adhesion was also observed with the increasing water contact angle and with decreasing surface roughness. In addition, only one modification recorded an increase in ice adhesion after exposure in the aging chamber.
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