Nanostructured superhydrophobic polysiloxane coating for high barrier and anticorrosion applications in marine environment

Arukalam, Innocent O.; Oguzie, Emeka E.; Liu, Ying

doi:10.1016/j.jcis.2017.10.089

Cited by 99 publications

(27 citation statements)

References 45 publications

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“…Superhydrophobic surfaces are described as surfaces having contact angles larger than 150 0 with water and play significant roles in many scientific and industrial areas, such as, self-cleaning surfaces, [1][2][3][4] anti-ice surfaces, [5][6][7] anticorrosion, 8,9 oil-water separation, 10,11 and so on. Various approaches have been utilized to produce superhydrophobic surfaces containing plasma etching, 12 chemical vapor deposition, 13 electrospinning, 14,15 phase separation, 16,17 and so on.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces

Doğancı

2020

J of Applied Polymer Sci

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A superhydrophobic cyclic olefin copolymer (COC) nanocomposite coating was produced with a very simple and easy method. Self-cleaning superhydrophobic COC surfaces were obtained by only adding surface hydrophobized SiO 2 nanoparticles by dip coating method. The influence of concentration of SiO 2 and the coating temperatures on the wettability of the surfaces were investigated. The surface wettability of the coatings was examined with the contact angle measurements and the surface roughness and morphology were analyzed by using atomic force microscope and scanning electron microscopy analysis. Surfaces with certain amounts of COC and SiO 2 showed superhydrophobic character with high water contact angle of 169 0. Also, the obtained superhydrophobic surfaces show superior water repellent, high transparency, and self-cleaning characteristics.

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Section: Introductionmentioning

confidence: 99%

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces

Doğancı

2020

J of Applied Polymer Sci

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“…The integrated assembly, as it appeared in TEM images of CuO 3c potency, showed trapping of the active materials within the cross-linked polysiloxane bonds. It is well known that these bonds are hydrophobic 39,40 and can bind with air bubbles and enrich the top layer with active materials, the mechanism of which is shown in ►Fig. 8.…”

Section: Discussionmentioning

confidence: 99%

Dilution-Induced Physico-Chemical Changes of Metal Oxide Nanoparticles Due to Homeopathic Preparation Steps of Trituration and Succussion

et al. 2019

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Background Although the presence of starting materials in extreme dilutions of homeopathic medicines has been established, the physico-chemical changes of these materials induced by the manufacturing steps—that is, solid–solid mixing involving grinding (trituration) and slurry mixing involving impact (succussion), followed by dilution—are still unknown. Methods We subjected cupric oxide and zinc oxide nanoparticles (NPs) to the homeopathic processes of trituration and succussion, followed by dilution up to 6 cH. Particle image velocimetry was employed to analyze the fluid motion during succussion and its effect on the NPs. The resulting microstructural and chemical changes at different dilution steps were determined by X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy and transmission electron microscopy. Results The succussion triggered multi-sized bubble generation and turbulent fluid motion up to a duration of 400 ms, with maximum average velocity of 0.23 m/s. Due to 1% transfer of kinetic energy from a moving eddy with this velocity, upon collision, the rate of temperature change in a particle of size 1 µm and 1 nm was predicted to rise by approximately 102 K/s and 106 K/s respectively. During trituration, the oxide NPs reduced to metals and did not aggregate by remaining within lactose, but they converted to oxidized finer NPs after impact. Silicate chains leached from the vial cross-linked after third dilution, forming large macro-particles and encapsulating the NPs that were retained and carried at higher dilution steps. Conclusion The results showed that the NPs sustained significant rate of temperature change due to energy transfer from moving eddies during succussion. Different physico-chemical changes, such as size reduction, successive reduction and oxidation of NPs, and morphological changes, were achieved through trituration and succussion. The retention of NPs within cross-linked poly-siloxane chains reveals the importance of both the borosilicate glass vial and the ethanol solution during preparation of homeopathic medicines.

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“…Epoxy and polyurethane coatings exhibit inherently high surface energy. Thus, their performance against degradation is poor; to address this defect, nanostructured hydrophobic and superhydrophobic polysiloxane coatings have being proposed [109]. The coatings were prepared by sol-gel process using perfluorodecyltrichlorosilane (FDTS), nanoZnO particles, and poly(dimethylsiloxane) (PDMS).…”

Section: Sol-gelmentioning

confidence: 99%

A Review of Fabrication Methods, Properties and Applications of Superhydrophobic Metals

et al. 2021

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Hydrophobicity and superhydrophobicity with self-cleaning properties are well-known characteristics of several natural surfaces, such as the leaves of the sacred lotus plant (Nelumbo nucifera). To achieve a superhydrophobic state, micro- and nanometer scale topography should be realized on a low surface energy material, or a low surface energy coating should be deposited on top of the micro-nano topography if the material is inherently hydrophilic. Tailoring the surface chemistry and topography to control the wetting properties between extreme wetting states enables a palette of functionalities, such as self-cleaning, antifogging, anti-biofouling etc. A variety of surface topographies have been realized in polymers, ceramics, and metals. Metallic surfaces are particularly important in several engineering applications (e.g., naval, aircrafts, buildings, automobile) and their transformation to superhydrophobic can provide additional functionalities, such as corrosion protection, drag reduction, and anti-icing properties. This review paper focuses on the recent advances on superhydrophobic metals and alloys which can be applicable in real life applications and aims to provide an overview of the most promising methods to achieve sustainable superhydrophobicity.

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Nanostructured superhydrophobic polysiloxane coating for high barrier and anticorrosion applications in marine environment

Cited by 99 publications

References 45 publications

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces

Dilution-Induced Physico-Chemical Changes of Metal Oxide Nanoparticles Due to Homeopathic Preparation Steps of Trituration and Succussion

A Review of Fabrication Methods, Properties and Applications of Superhydrophobic Metals

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Nanostructured superhydrophobic polysiloxane coating for high barrier and anticorrosion applications in marine environment

Cited by 99 publications

References 45 publications

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO2 nanocomposite surfaces

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO2 nanocomposite surfaces

Dilution-Induced Physico-Chemical Changes of Metal Oxide Nanoparticles Due to Homeopathic Preparation Steps of Trituration and Succussion

A Review of Fabrication Methods, Properties and Applications of Superhydrophobic Metals

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Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces