Efficient fabrication of lightweight polyethylene foam with robust and durable superhydrophobicity for self-cleaning and anti-icing applications

Wu, Ting; Xu, Wanhai; Guo, Kai; Xie, Heng; Qu, Jinping

doi:10.1016/j.cej.2020.127100

Cited by 84 publications

(40 citation statements)

References 56 publications

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“…Thus, the water droplet could maintain a nonimpregnated Cassie–Baxter state on the etched UFs. However, the original UF and etched UFs at low temperature (e.g., 40 and 60 °C) had lower WCAs and much higher SAs due to insufficient crystallites on the surface, leading to the sagging of the water profile and an impregnated Wenzel or Cassie–Baxter wetting state, as schematically illustrated in Figure h …”

Section: Results and Discussionmentioning

confidence: 99%

Superhydrophobic UHMWPE Foams with High Mechanical Robustness and Durability Fabricated by Supercritical CO₂ Foaming

Sun

Guo

et al. 2021

ACS Sustainable Chem. Eng.

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The low durability and stability of superhydrophobic foams and high fabrication costs are the main reasons that limit their practical applications in water remediation and oil recycling. Herein, an extremely superhydrophobic and exceptionally robust foam was developed based on ultrahigh-molecular weight polyethylene (UHMWPE) by supercritical carbon dioxide (scCO2) foaming and subsequent surface modification. The developed foam comprises a highly porous structure decorated with hydrophobic silica nanoparticles and aligned UHMWPE crystallites, constructing a complex micro–nanosized hierarchical morphology, which contributed to an unprecedented water contact angle (WCA) of 162° and a sliding angle of 1°. When used in selective oil absorption and oil/water separation, the foam demonstrated about 100% separation efficiency in repetitive use and even under a vacuum of −70 Kpa due to its high water repellency. More importantly, the foam has outstanding tolerance against mechanical damages such as ultrasonication, bending and twisting, tape peeling, steel wool abrasion, and knife scratching. The surface could maintain the hierarchical structure and a WCA of over 156° after enduring different damages. Moreover, when the surface is clogged, the foam could restore its superhydrophobicity by arbitrary fracturing and cutting, resulting in a theoretically unlimited lifespan. This work not only proposes a UHMWPE-based superhydrophobic foam with extremely high superhydrophobicity, durability, and separation efficiency but also provides insights into the design and mass production of ultraefficient and robust superhydrophobic porous materials for practical applications.

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Section: Results and Discussionmentioning

confidence: 99%

Superhydrophobic UHMWPE Foams with High Mechanical Robustness and Durability Fabricated by Supercritical CO₂ Foaming

Sun

Guo

et al. 2021

ACS Sustainable Chem. Eng.

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“…This novel design has potential applications in the field of anti-icing. [32][33][34] The porous interlayer can provide a sufficient amount of air, which enhances its thermal isolation performance. In addition, the gradient porous interlayer can effectively play the role of thermal insulation.…”

Section: Thermal Isolationmentioning

confidence: 99%

Integrating Design of Flexible Surface and Gradient Porosity Interlayer for Improving Impact Resistance and Thermal Isolation

Wang

Zhang

Zhao³

et al. 2021

Adv Eng Mater

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“…A kind of solid surface with a water contact angle (WCA) greater than 1501 and a rolling angle (SA) less than 101 is usually defined as a superhydrophobic surface. 12,13 To adjust the wettability of materials, it is usually necessary to optimize the surface chemical composition and microstructure through chemical or physical methods. 14,15 Unfortunately, superhydrophobic surfaces are vulnerable and have poor stability in most cases.…”

Section: Introductionmentioning

confidence: 99%

Achieving sandwich-like laminated composite materials for robust superhydrophobicity, rapid photochromism and photo-mask writable media

Huang

Yang

2022

Mater. Chem. Front.

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Efficient fabrication of lightweight polyethylene foam with robust and durable superhydrophobicity for self-cleaning and anti-icing applications

Cited by 84 publications

References 56 publications

Superhydrophobic UHMWPE Foams with High Mechanical Robustness and Durability Fabricated by Supercritical CO₂ Foaming

Superhydrophobic UHMWPE Foams with High Mechanical Robustness and Durability Fabricated by Supercritical CO₂ Foaming

Integrating Design of Flexible Surface and Gradient Porosity Interlayer for Improving Impact Resistance and Thermal Isolation

Achieving sandwich-like laminated composite materials for robust superhydrophobicity, rapid photochromism and photo-mask writable media

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Efficient fabrication of lightweight polyethylene foam with robust and durable superhydrophobicity for self-cleaning and anti-icing applications

Cited by 84 publications

References 56 publications

Superhydrophobic UHMWPE Foams with High Mechanical Robustness and Durability Fabricated by Supercritical CO2 Foaming

Superhydrophobic UHMWPE Foams with High Mechanical Robustness and Durability Fabricated by Supercritical CO2 Foaming

Integrating Design of Flexible Surface and Gradient Porosity Interlayer for Improving Impact Resistance and Thermal Isolation

Achieving sandwich-like laminated composite materials for robust superhydrophobicity, rapid photochromism and photo-mask writable media

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Product

Resources

About

Superhydrophobic UHMWPE Foams with High Mechanical Robustness and Durability Fabricated by Supercritical CO₂ Foaming

Superhydrophobic UHMWPE Foams with High Mechanical Robustness and Durability Fabricated by Supercritical CO₂ Foaming