Superhydrophobic fluorinated acylonitrile coatings via electrospraying

Çanak, Tuba Çakır; Unsal, Cem; Serhatlı, İ. Ersin; Sarac, A. Sezai̇

doi:10.1016/j.porgcoat.2017.01.013

Cited by 16 publications

(4 citation statements)

References 65 publications

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“…The electrospraying of copolymers containing fluorinated acrylate and arylonitrile with different composition ratios was performed by Çanak et al Electrospraying process gave heterogeneity to the surface of the coating and this heterogeneity affects the interaction energy between the surface and the liquid. Thus, more hydrophobicity was shown on the surface of the copolymer coatings than spin‐cast films.…”

Section: Fabrication Of Superhydrophobic Surfacementioning

confidence: 99%

Wetting Models and Working Mechanisms of Typical Surfaces Existing in Nature and Their Application on Superhydrophobic Surfaces: A Review

Jiaqiang

Deng

et al. 2017

Adv Materials Inter

105

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decades, researchers have shown great interests in bionics, which was a new multidisciplinary subject inspired by biological characteristics and features to imitate it to build technology devices. [1] With the rise of biomimetic biomaterial researches, a lot of attention was paid on the observation of living organism, especially on plant leaves, such as lotus, rice, taro leaves, etc. [2] As the development of scanning electron microscope (SEM), a wealth of data dealing with SEM of plant surface has been published since 1960s. [3] The cuticular structure was investigated with regard to function, and substances that were secreted onto the cuticle had great effects on the surface properties, while intracuticular waxes were the main barrier to wettability. [4] Some kinds of special wettability like superhydrophobicity and superhydrophilicity were also found in other surfaces, such as self-cleaning lotus leaf, [5] hydrophilicity of red rose petals, [6,7] the anisotropic dewetting behavior on rice leaf, [8,9] hydrophobicity of shark skin, [10] gecko toe, [11] insect wings, [12] etc., and striking superhydrophobic force provided by a water strider's legs, [13] and they were all related to the unique microstructures on their surface. In fact, the special wettability of surfaces is attributed to the interaction of both the surface microstructures and surface covers. As the development and progress of the observation device, smaller nanosized structures were found on the microstructure, and better properties of multiscale hierarchical structure was shown then. [14] Wetting is a phenomenon that solid interface was transferred from solid-gas interface to solid-liquid interface, wettability was a kind of ability that a liquid could be unfolded on one solid surface. The wettability of surface could be characterized by contact angle (CA) of interface. Sliding angle (SA) and contact angle hysteresis were introduced to evaluate the highly valued superhydrophobicity and superhydrophilicity of surfaces. Superhydrophilicity was defied as that of CA was smaller than 5°, superhydrophobicity was defied as that of CA was greater than 150°, as well as a really small sliding angle. It is worth noting that many researchers applied themselves to excavate the theories under the phenomena. Young's equation, Wenzel equation, and Cassie-Baxter equation [15,16] were the representations of hundreds years of research results. Improving and developing Surfaces of plants and animals are evolved to optimal states to accommodate environments better after billions of years of natural selection. As the development of further study on bionics, surfaces with special wetting properties in nature are discovered, extremely related to the micro-/nanostructures on surface. The wetting models and wetting mechanism of several surfaces in nature are investigated, followed by lifting the veil of superhydrophobic field. Various facile, effective, and convenient methods for fabricating superhydrophobic surfaces are obtained and optimized in scientific research and ...

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Section: Fabrication Of Superhydrophobic Surfacementioning

confidence: 99%

Wetting Models and Working Mechanisms of Typical Surfaces Existing in Nature and Their Application on Superhydrophobic Surfaces: A Review

Jiaqiang

Deng

et al. 2017

Adv Materials Inter

105

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“…Such sol-gel coatings are based on the use of SiO 2 nanoparticles and silanes in a solvent. Either by dip coating or by spraying, robust, transparent and superhydrophobic coatings have been prepared on glass [4][5][6][7][8][9][10]. The approaches mainly vary in the solvent, the specific selected silane and the coating procedure.…”

Section: Introductionmentioning

confidence: 99%

Development of superhydrophobic coatings on AISI 304 austenitic stainless steel with different surface pretreatments

et al. 2019

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In the context of increasing industrial importance of superhydrophobic surfaces, three different pretreatments on an austenitic stainless steel surface have been tested to be coated with a silane-based solution containing SiO 2 nanoparticles, in order to obtain superhydrophobic surfaces. The pretreatments are (i) an acetone degreaser, (ii) this one followed by a hot air treatment and acid pickling, and (iii) the previous one followed by an alkaline etching. Pretreated surfaces have been characterized by X-ray photoelectron spectroscopy, tapping-mode atomic force microscopy and contact angle measurements. After the three pretreatments, a solution of methyltrimethoxysilane and tetraethoxysilane in white spirit solvent and 1% of SiO 2 (% by wt.) has been used to prepare a superhydrophobic coating on them. The hydrophobicity of the developed coatings has been studied using water contact angle measurements (static angles and advancing and receding angles). Besides, scanning electron microscope has been used to study the coatings. The results show that different tailored surfaces can be obtained in stainless steels using these pretreatments, obtaining surfaces that exhibit different physicochemical characteristics that may condition the formation of superhydrophobic coatings on them.

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“…Huang et al successfully fabricated various hierarchical structure microspheres and fibers of PCL by electrospraying or electrospinning and used for superhydrophobic coatings. Serhatli et al fabricated superhydrophobic fluorinated acylonitrile coatings via electrospraying. However, there lack adhesion between microspheres and fabrics, which limits application in textile field.…”

Section: Introdutionmentioning

confidence: 99%

Hierarchical structure microspheres of PCL block copolymers via electrospraying as coatings for fabric with mechanical durability and self‐cleaning ability

Wang

2019

Polymers for Advanced Techs

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The various morphology and structure microspheres were fabricated via one-step single-solvent electrospraying of hydrophilic and hydrophobic block modified copolymer of polycaprolactone (PCL). A honeycomb-like hierarchical structure microspheres of PCL-b-PTFOA(4h) and abundant nanometer pores of PCL-b-PEG400 microspheres were obtained due to the solvent evaporation, thermally and polymer diffusioninduced phase separation effect. Furthermore, a superhydrophobic coatings and robust superhydrophobic-coated cotton woven fabric surfaces were prepared by using PCL-b-PTFOA(4h) microspheres with hierarchical structure and low surface energy. The contact angle (CA) and sliding angle (SA) of PCL-b-PTFOA (4h) microspheres-coated cotton woven fabric surfaces reached 164.4 ± 5.5°and6.8 ± 0.5°, respectively, which allows for self-cleaning. The self-cleaning test demonstrated that the coated superhydrophobic surface could shed aqueous dyes and dust without any trace. The superhydrophobic-coated fabric shows good soaping fastness against mechanical abrasion without significant reduction of CA. This electrospraying coating of block copolymers can provide a simple, facile, and promising technique for producing multifunctional textiles.

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Superhydrophobic fluorinated acylonitrile coatings via electrospraying

Cited by 16 publications

References 65 publications

Wetting Models and Working Mechanisms of Typical Surfaces Existing in Nature and Their Application on Superhydrophobic Surfaces: A Review

Wetting Models and Working Mechanisms of Typical Surfaces Existing in Nature and Their Application on Superhydrophobic Surfaces: A Review

Development of superhydrophobic coatings on AISI 304 austenitic stainless steel with different surface pretreatments

Hierarchical structure microspheres of PCL block copolymers via electrospraying as coatings for fabric with mechanical durability and self‐cleaning ability

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