Electrospun polystyrene coatings with tunable wettability

Ghochaghi, Negar; Taiwo, Adetoun; Winkel, Matthew; Dodd, Brandon M.; Mossi, Karla; Tepper, Gary

doi:10.1002/app.41592

Cited by 10 publications

(11 citation statements)

References 41 publications

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“…However, most of the fibers prepared by the traditional electrospinning were typically randomly oriented in the form of nonwoven mats. In comparison to randomly oriented fibers, well-aligned and highly ordered fibers have always advantages in advanced applications [2,3].…”

Section: Introductionmentioning

confidence: 99%

Hierarchical aligned ZnO nanorods on surface of PVDF/Fe2O3 nanofibers by electrospinning in a magnetic field

Tian

Liu

2021

THERM SCI

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The electrospinning was applied to fabricate aligned nanofibers in a magnetic field. Fe2O3 nanoparticles were added to PVDF/Zn(CHCOOH)2solution, and heat treatment of the nanofiber mats was made to produce PVDF/Fe2O3nanofibers containing ZnO nanoparticles. Hierarchical composites were obtained via a facile hydrothermal growth process, where radially oriented ZnO nanorods were found. The morphology of the as-synthesized samples were investigated by using the scanning electron micrograph (SEM).

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Section: Introductionmentioning

confidence: 99%

Hierarchical aligned ZnO nanorods on surface of PVDF/Fe2O3 nanofibers by electrospinning in a magnetic field

Tian

Liu

2021

THERM SCI

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“…A clear example related to these previous advantages can be found in [17] where electrospun functionalized films with an enhancement corrosion resistance and hydrophobicity has been obtained by using a combination of electrospinning and another deposition technique, such as chemical vapor deposition (CVD). According to this, in other works, hydrophobic or even superhydrophobic materials with tunable wettability have been developed as a function of a polymeric precursor with functional groups with a clearly water-repellent behavior, such as polystyrene (PS) or polyvinyl chloride (PVC) [18,19]. The main reason of this higher non-wettability property is associated to the fabrication of rougher surfaces in comparison with flat film deposition [13,20].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Multifunctional Coatings Based on Electrospun Fibers with Incorporated ZnO Nanoparticles

et al. 2019

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In this work, polymeric fibers of polystyrene (PS) with incorporated ZnO nanoparticles have been deposited onto an aluminum alloy substrate (6061T6) by using the electrospinning technique. In order to optimize the deposition process, the applied voltage and flow rate have been evaluated in order to obtain micrometric electrospun fibers with a high average roughness and superhydrophobic behavior. Thermogravimetric analysis (TGA) has also been employed in order to corroborate the amount of ZnO incorporated into the electrospun fibers, whereas differential scanning calorimetry (DSC) has been performed in order to determine the glass transition temperature (T g ) of the polymeric electrospun fibers. In addition, a specific thermal treatment (T g + 20 • C) of the synthesized electrospun fibers has been evaluated in the resultant corrosion resistance. A comparative study with previously reported results corresponding to polyvinyl chloride (PVC) fibers is carried out along this paper to show the changes in behavior due to the different compositions and fiber diameters. The coating has produced an important reduction of the corrosion current of the aluminum substrate in two orders of magnitude, showing also an important enhancement against pitting corrosion resistance. Finally, this deposition technique can be used as an innovative way for the design of both superhydrophobic and anticorrosive surfaces in one unique step over metallic substrates with arbitrary geometry.

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“…1 provides a means for engineering superhydrophobic coatings with more predictable performance. The example SEM image shown in this figure is from an electrospun superhydrophobic polystyrene mat with orthogonal fibers having an average fiber diameter of 2.4 μm and a mat solid volume fraction (SVF) of 7.5% [22,23]. Unlike coatings with random fiber orientations, orthogonally layered fiber mats have a degree of order to them that allows one to predict their overall performance based on an analysis conducted on a small portion of their structure, i.e., the spaces between the fibers conforming to a grid of rectangular cells.…”

Section: Introductionmentioning

confidence: 99%

Wetting resistance of heterogeneous superhydrophobic coatings with orthogonally layered fibers

Bucher

Amrei

Tafreshi

2015

Surface and Coatings Technology

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a b s t r a c tSuperhydrophobic coatings comprised of electrospun nanofibers are a low-cost alternative to micro-fabricated surfaces, and can be applied to substrates of any arbitrary geometry. Such coatings with orthogonally oriented layers have properties that allow their wetting resistance to be predictable for a range of solid volume fractions, fiber diameters, and contact angles. In this paper, we have presented a modeling strategy that solves for the airwater interface shape over several layers of such coatings to predict the resistance of superhydrophobic fiber coatings to hydrostatic pressures and to quantify the relationship between microstructure, meniscus penetration depth, and wetted surface area of the fibers. Slip length predictions are also provided to shed some light on the performance of such coatings in drag reduction applications. It was found that while failure pressure for a coating rises with reducing fiber spacing, there is a tradeoff with wetted fiber surface area relative to a bare substrate. This tradeoff can be offset, however, by using smaller fibers for an intended coating. This results in a higher failure pressure for the same wetted area fraction. The results generated in this work are discussed in relation to those reported in the literature whenever possible.

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Electrospun polystyrene coatings with tunable wettability

Cited by 10 publications

References 41 publications

Hierarchical aligned ZnO nanorods on surface of PVDF/Fe2O3 nanofibers by electrospinning in a magnetic field

Hierarchical aligned ZnO nanorods on surface of PVDF/Fe2O3 nanofibers by electrospinning in a magnetic field

A Comparative Study of Multifunctional Coatings Based on Electrospun Fibers with Incorporated ZnO Nanoparticles

Wetting resistance of heterogeneous superhydrophobic coatings with orthogonally layered fibers

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