Polyurethane-acrylate-based hydrophobic film: Facile fabrication, characterization, and application

Park, Jong Sung; Nguyen, Bui Quoc Huy; Kim, Ji-Kwan; Shanmugasundaram, Arunkumar

doi:10.7567/jjap.57.06hj09

Cited by 5 publications

(6 citation statements)

References 30 publications

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“…A HTFS film requires an optimized surface roughness, a passivation layer comprising functional materials with low surface energy, and a transparent substrate. Recently, several polymer materials like polyethylene terephthalate (PET), [ 12,13 ] poly(methyl methacrylate) (PMMA), [ 14 ] polydimethylsiloxane (PDMS), [ 15 ] and poly(urethane acrylate) (PUA) [ 16,17 ] have been used to prepare transparent and flexible superhydrophobic films. For example, Teshima et al.…”

Section: Introductionmentioning

confidence: 99%

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Highly Flexible Superhydrophobic Poly(Urethane Acrylate) Film for Applications Requiring High Optical Transparency

Hou

Shanmugasundaram

Kim

et al. 2020

Macro Materials & Eng

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The importance of superhydrophobic surfaces has been potentially demonstrated in several applications such as anti-fouling, [4] self-cleaning, [5] antifriction, [6] oil/water separation, [7] microfluidics, [8] biomedical devices, [9] and solar cell protection. [10] However, most proposed superhydrophobic surfaces are nontransparent and inflexible, thereby restricting their use in certain applications such as smart screens for solar panels, camera lens, organic light-emitting diodes, safety goggles, and automobiles. [11] Therefore, research has focused on realizing a highly transparent, and flexible superhydrophobic (HTFS) surface to overcome these limitations, as well as the drawbacks of the current stateof-the-art flexible transparent films, and thus, expand the range of applications. A HTFS film requires an optimized surface roughness, a passivation layer comprising functional materials with low surface energy, and a transparent substrate. Recently, several polymer materials like polyethylene terephthalate (PET), [12,13] poly(methyl methacrylate) (PMMA), [14] polydimethylsiloxane (PDMS), [15] and poly(urethane acrylate) (PUA) [16,17] have been used to prepare transparent and flexible superhydrophobic films. For example, Teshima et al. fabricated a HTFS substrate via oxygen plasma treatment followed by the deposition of an organosilane hydrophobic coating. [13] Vourdas et al. prepared a nanotextured superhydrophobic transparent PMMA substrate using a high-density plasma processing method. [18] However, most PET-and PMMA-based studies conducted oxygen plasma treatment, which is not conducive to large-scale production. On the other hand, PDMS has been widely used to fabricate transparent and flexible superhydrophobic substrates owing to its high fidelity for microstructure development and rapid prototyping. However, it is difficult to prepare a thin PDMS film (tens of micrometers) as a freestanding film or deposit PDMS on other substrates because of its high viscosity and poor adhesion to other substrates. PUA presents excellent physicochemical and optical properties, such as high deformability, ultraviolet (UV) curability at room temperature, excellent impact strength, and high transparency in the visible region. Despite these beneficial features, to date, experimentally realizing a PUA-based superhydrophobic substrate has seen limited success because of its high surface energy. To the best of our knowledge, only three reports The present work elucidates the successful attempts toward the development of a highly transparent, flexible, and superhydrophobic (HTFS) film. The HTFS film is obtained by introducing graphene oxide (GO) into micropillar-patterned poly(urethane acrylate) (PUA), followed by siloxane functionalization via chemical vapor deposition. The fabricated SPG 2 film (siloxane-functionalized PUA incorporated with 0.1 wt% of GO) exhibits a water advancing contact angle, water receding contact angle, and sliding angle of 155.5 ± 0.3°, 143.4 ± 0.6°, and 9 ± 0.4°, respectively. The SPG 2 film also exhibit...

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Section: Introductionmentioning

confidence: 99%

“…[ 19,20 ] Park et al. [ 16 ] fabricated a hydrophobic film using microstructured PUA and a nanosilica spray‐coating. The nanosilica‐coated PUA film showed high flexibility and transparency with a WCA of ≈140°, but presented poor long‐term stability due to insufficient adhesion between the nanosilica and PUA substrate.…”

Section: Introductionmentioning

confidence: 99%

Highly Flexible Superhydrophobic Poly(Urethane Acrylate) Film for Applications Requiring High Optical Transparency

Hou

Shanmugasundaram

Kim

et al. 2020

Macro Materials & Eng

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“…The extensive attention received by flexible hydrophobic film materials is due to their broad application prospects in areas such as self-cleaning, waterproofing, and anticorrosion. [1][2][3][4] In recent years, researchers have become increasingly interested in the unique self-cleaning properties of hydrophobic materials, that is, materials that repel water. 5 These materials are inspired by natural lotus leaves, which allow water droplets to quickly roll off and take pollutants with them.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and performance of hydroxyl‐terminated polysiloxane‐modified polyurethane acrylate films as potential flexible hydrophobic materials

Zhao

Yang

Omoniyi

et al. 2023

J of Applied Polymer Sci

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Hydrophobic materials possess exceptional properties, making them extensively useful in daily production and life. However, developing low-cost and flexible hydrophobic materials remains a challenging task. In this study, a series of composite emulsions were prepared by introducing hydroxylterminated polydimethylsiloxane as a modifier into polyurethane acrylate via a solvent-free approach. The composite emulsions were then used to fabricate polymer films using the solvent evaporation technique. The effects of varying siloxane content on the properties of composite emulsions and polymer membranes were examined. The results showed that increasing the siloxane content improved the hydrophobic properties and flexibility of the film materials. Fourier transform infrared spectroscopy confirmed the introduction of the Si O Si group into the polyurethane chain structure, the absorption peak for asymmetric stretching vibration of Si O Si is at 1100 cm À1 . The mechanical properties test revealed that the film had excellent elongation at break (278.96 ± 0.01%), and a hydrophobic surface with a contact angle of 101.94 was obtained. The composite materials showed improved water resistance and thermal stability with the increase in siloxane content. The hydrophobic film is a promising material for application in decoration, architecture, and flexible wearable devices.

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“…As we showed the result, PUA having flexible, optical transparency and applications of UV-curable PUA mold. Furthermore, our previous findings [21], was evaluated considering mechanical friction or scratches that may occur in everyday life. For the enhanced durability, we were employing PUA material and optimized micro post distance or additional nano-silica coating process.…”

Section: Introductionmentioning

confidence: 99%

“…(v) Nano-silica coating on the surface of the micropatterned PUA based hydrophobic film. The nano-silica coating improved the hydrophobicity and increased the durability of the film [21]. The fabricated material was characterized in detail by field emission scanning electron microscope (FESEM), energy dispersive x-ray (EDX), x-ray photoelectron spectra (XPS), and ultraviolet diffused reflectance (UVDRS) analysis.…”

Section: Introductionmentioning

confidence: 99%

Large scale roll-to-roll production of polyurethane-acrylate-based hydrophobic film: a next-generation protection layer for solar devices

Park¹,

Kim²,

Kim³

et al. 2020

J. Micromech. Microeng.

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In the present study, we fabricate a hydrophobic film using a roll-to-roll technique capable of large-area continuous production and examine the film’s applicability to solar panels. The hydrophobic film was fabricated using a polyurethane-acrylate (PUA)-based UV-curable material, which has high optical transmittance and high releasability. The roll-to-roll system used in this study was custom manufactured to transfer micro-patterns of 20 μm in size onto the PUA-based film. In addition, a UV irradiation device was attached to the system to enable production of the hydrophobic film at a rate of 150 mm min-1. Through experiments, we confirmed that attaching the fabricated hydrophobic film not only enabled surface self-cleaning on the solar panels, but also ensured stable solar power generation. Thus, the hydrophobic film can be applied to installations that require external periodic cleaning and management, such as the exterior walls of buildings and solar panels.

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Polyurethane-acrylate-based hydrophobic film: Facile fabrication, characterization, and application

Cited by 5 publications

References 30 publications

Highly Flexible Superhydrophobic Poly(Urethane Acrylate) Film for Applications Requiring High Optical Transparency

Highly Flexible Superhydrophobic Poly(Urethane Acrylate) Film for Applications Requiring High Optical Transparency

Synthesis and performance of hydroxyl‐terminated polysiloxane‐modified polyurethane acrylate films as potential flexible hydrophobic materials

Large scale roll-to-roll production of polyurethane-acrylate-based hydrophobic film: a next-generation protection layer for solar devices

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