Review of superoleophobic surfaces: Evaluation, fabrication methods, and industrial applications

Ghaffari, Sanaz; Aliofkhazraei, M.; Darband, Gh. Barati; Zakeri, Alireza; Ahmadi, Elham

doi:10.1016/j.surfin.2019.100340

Cited by 47 publications

(27 citation statements)

References 332 publications

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“…The stiff fluorine atoms along their structures make biofouling attachments, which they cannot be easily released. 135 However, a major drawback of the PDMS homopolymers is the poor mechanical features that can be achieved even at extremely-high Mw (500,000 g/mol). 136 This drawback can be overcome by insertion of inorganic nanofillers in the polymeric matrix to produce nanocomposites with improved superhydrophobicity and anti-biofouling.…”

Section: Silicone-polymer Coatingsmentioning

confidence: 99%

Progress in biomimetic leverages for marine antifouling using nanocomposite coatings

et al. 2020

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Section: Silicone-polymer Coatingsmentioning

confidence: 99%

Progress in biomimetic leverages for marine antifouling using nanocomposite coatings

et al. 2020

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“…[ 24 ] Additionally, although the contact angles between water/oil and pPFHDA coating are small relative to many superamphiphobic surfaces, the advantage is that the coatings do not require any nanoscale surface patterning which complicates the fabrication process and adds significant cost. [ 25 ]…”

Section: Resultsmentioning

confidence: 99%

Stretchable, Transparent, Permeation Barrier Layer for Flexible Optics

Zhao

Huo

et al. 2021

Advanced Optical Materials

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Flexible, compliant permeation barrier layers are critically needed in the optics/optoelectronics industry to protect deformable, polymer‐based optical elements, such as those found in variable focus lenses. To address these needs, a transparent and deformable polymeric permeation barrier coating consisting of poly(1H,1H,6H,6H‐perfluorohexyl diacrylate) (pPFHDA) is prepared by initiated chemical vapor deposition. pPFHDA is a highly crosslinked fluoropolymer, which is deposited onto temperature‐sensitive elastomeric membranes at ambient temperature with high uniformity and conformality. This is believed to be the first demonstration of vapor deposition of the PFHDA monomer. Coatings with thicknesses nominally ranging from 200 to 750 nm are prepared and shown to be impermeable to high‐index optical fluid (polyphenyl thioether) over 2 months at 70 °C, which translates to more than 4 year lifespan at room temperature, even after being subjected to 0.26% biaxial strain. Moreover, due to its amorphous nature, the pPFHDA is transparent from wavelengths of 300–1690 nm and also thermally stable to temperatures of 300 °C. These properties should make pPFHDA coating a particularly compelling candidate for flexible optical/optoelectronic devices requiring transparent and compliant barrier layers.

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“…Even though the preparation of superhydrophobic surfaces is currently well-assessed, at least at research level, superoleophobic surfaces are still more complex to fabricate even at lab scale. The liquid repellence requirements appear to be more restrictive in comparison with water, because the coating material should feature high de-wetting properties for nonpolar alkane liquids with low surface tensions particular, lower than 27 dyn cm −1 ), usually with small (few µL) droplets and low hysteresis [88].…”

Section: Oleophobic Sustainable Coatingsmentioning

confidence: 99%

Sustainable Materials for Liquid Repellent Coatings

Cirisano

Ferrari

2021

Coatings

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A modern environmental safety approach requires the implementation of green or sustainable strategies, such as banning or significantly lowering the presence of harmful substances on the market or in the industrial environment. To date, the majority of highly performing solutions are still based on fluorine chemistry, even with a growing effort to lower its impact. Economic costs, but also persistence, long-term degradation, and transformation in the environment can raise issues about medium- and long-term effects on human health and wildlife. Coatings with high water and oil repellence are used worldwide in daily life and in industrial and research fields, such as self-cleansing, anti-icing, and anti-biofouling. The combination of a particular geometry or surface structure and low-energy materials results in unique properties related to a range of materials in natural or synthetic categories aiming to build, when possible, a fluorine-free world. This work revises recent and key literature to propose valid alternatives to fluoro compounds in terms of water and oil repellence, as well as stability and resistance to physico-chemical agents. In this paper, natural compounds like fatty acids and waxes are addressed together with more synthetic systems like silicon-based solutions, and polymeric and inorganic nanostructured coatings. Most of the revised papers deal with topics fulfilling environmental requirements but are mainly restricted to highly repellent water and aqueous systems. Nevertheless, new and sustainable strategies for providing suitable, highly oleophobic surfaces to lower fluorine presence have been reported from a small but growing body of literature.

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Review of superoleophobic surfaces: Evaluation, fabrication methods, and industrial applications

Cited by 47 publications

References 332 publications

Progress in biomimetic leverages for marine antifouling using nanocomposite coatings

Progress in biomimetic leverages for marine antifouling using nanocomposite coatings

Stretchable, Transparent, Permeation Barrier Layer for Flexible Optics

Sustainable Materials for Liquid Repellent Coatings

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