A facile and novel emulsion for efficient and convenient fabrication of durable superhydrophobic materials

Wu, Yiqiang; Jia, Shanshan; Wang, Shuang; Qing, Yan; Yan, Ning; Wang, Qihang; Meng, Taotao

doi:10.1016/j.cej.2017.07.023

Cited by 98 publications

(51 citation statements)

References 55 publications

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“…It is well known that the formation of superhydrophobic surfaces is attributed to the dual function of micro/nano- hierarchical roughness and low surface energy [ 6 ]. Up to now, a variety of methods have been developed to fabricate superhydrophobic surfaces on wood-based materials, such as hydrothermal treatment [ 7 , 8 ], sol-gel method [ 9 , 10 ], dip or spray-coating [ 11 , 12 , 13 , 14 ], soft lithography [ 15 , 16 ], “paint + adhesive” method [ 17 , 18 ], and so on. Among “paint + adhesive” methods, PDMS as adhesive has been successfully used to fabricate various robust and durable superhydrophobic surfaces [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of a PDMS@Stearic Acid-Kaolin Coating on Lignocellulose Composites with Superhydrophobicity and Flame Retardancy

et al. 2018

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The disadvantages such as swelling after absorbing water and flammability restrict the widespread applications of lignocellulose composites (LC). Herein, a facile and effective method to fabricate superhydrophobic surfaces with flame retardancy on LC has been investigated by coating polydimethylsiloxane (PDMS) and stearic acid (STA) modified kaolin (KL) particles. The as-prepared coatings on the LC exhibited a good repellency to water (a contact angle = 156°). Owing to the excellent flame retardancy of kaolin particles, the LC coated with PDMS@STA-KL displayed a good flame retardancy during limiting oxygen index and cone calorimeter tests. After the coating treatment, the limiting oxygen index value of the LC increased to 41.0. Cone calorimetry results indicated that the ignition time of the LC coated with PDMS@STA-KL increased by 40 s compared with that of uncoated LC. Moreover, the peak heat release rate (PHRR) and the total heat release (THR) of LC coated with PDMS@STA-KL reduced by 18.7% and 19.2% compared with those of uncoated LC, respectively. This LC coating with improved water repellency and flame retardancy can be considered as a potential alternative to protect the lignocellulose composite.

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Section: Introductionmentioning

confidence: 99%

Facile Fabrication of a PDMS@Stearic Acid-Kaolin Coating on Lignocellulose Composites with Superhydrophobicity and Flame Retardancy

et al. 2018

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“…Previous efforts usually render superhydrophobic surfaces that cannot last long under contamination or mechanical pressure. [15][16][17][18] A promising strategy to circumvent the above problems is to engineer superhydrophobic surfaces that can self-heal after being damaged. [19][20] The famous concept to construct self-healing superhydrophobic surfaces onto lignocellulostic materials is embedding healing agents (i.e., low surface energy materials) into the porous substrates.…”

Section: Introductionmentioning

confidence: 99%

Thermally-induced all-damage-healable superhydrophobic surface with photocatalytic performance from hierarchical BiOCl

Jia

Luo

et al. 2019

Chemical Engineering Journal

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Preparation of superhydrophobic surfaces capable of recovering both the surface chemistry and hierarchical structure is still a challenge. In this work, all-damage-healable superhydrophobic surface was fabricated by assembly of superhydrophobic and hierarchical BiOCl on lignocellulosic substrates. Fibers having thermally responsive behavior, the main component of lignocellulosic materials, act as the underlying movable substrates. By a simple heating treatment, fibers can convey the undamaged neighbored superhydrophobic coating to the damaged area. In 2 this way, the loss of superhydrophobicity caused by rigorous mechanical destructions, even deep cuts of one hundred of micrometers wide, can be restored, mimicking the self-healing mechanism of human skin. Superior self-healing ability in surface chemistry was also confirmed. Meanwhile, the as-prepared superhydrophobic surfaces demonstrated reliable photocatalytic ability, a useful property for resisting organic contaminations. Interestingly, it was found that the photocatalytic activity can be enhanced by tuning the surface wettability. This work reported the first use of substrate material's inherently thermally responsive property to demonstrate self-healing superhydrophobic surface with photoctalyticity, which not only promotes the application of superhydrophobic materials in complex environment, but also opens up a new perspective in designing durable superhydrophobic materials.

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“…Reducing leachability of Cu-based wood preservatives is still a challenge. Water repellants, polymers, and nanoparticles have been used to lower water uptake of wood surfaces [8,[10][11][12][13]. Thicker coatings or paints have also been applied for this purpose [14,15].…”

Section: Introductionmentioning

confidence: 99%

Mold resistance of bamboo treated with copper complexes-grafted silica gel and its microdistribution in treated bamboo

et al. 2019

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Bamboo is readily discolored by mold fungi, which greatly limits its applications. An effective antifungal agent, copper(II) chloride (CuCl 2 )-grafted silica gel, was prepared by a sol-gel process using tetraethoxysilane (TEOS)/3-aminopropyltriethoxysilane (APTES) mixtures. The elemental composition and the chemical combinations of homogeneous sol mixture (HSM) and bamboo were determined via Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy with energy-dispersive X-ray spectrometry (SEM-EDS). The mold resistance of bamboo treated with HSM, alkaline copper quat (ACQ), chromated copper arsenate (CCA), and purified water was characterized by an indoor mold test. The micro-morphology of bamboo treated with HSM was investigated using scanning electron microscopy (SEM). HSM penetrated into the bamboo vessels, and formed xerogels, which was able to coordinate copper(II) cations. SEM-EDS investigations suggest that Si-O-Cu linkages may be formed through an exchange reaction between silanol groups and copper complexes. The bamboo samples treated with HSM showed highly efficient mold resistance due to a good penetration of HSM. Furthermore, no fungal hyphae were found in the structure of HSM-treated bamboo after a 5-week mold test. The copper complexes grafted to silica gel developed in this work provide an efficient antifungal agent for a wide range of potential applications in bamboo protection. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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A facile and novel emulsion for efficient and convenient fabrication of durable superhydrophobic materials

Cited by 98 publications

References 55 publications

Facile Fabrication of a PDMS@Stearic Acid-Kaolin Coating on Lignocellulose Composites with Superhydrophobicity and Flame Retardancy

Facile Fabrication of a PDMS@Stearic Acid-Kaolin Coating on Lignocellulose Composites with Superhydrophobicity and Flame Retardancy

Thermally-induced all-damage-healable superhydrophobic surface with photocatalytic performance from hierarchical BiOCl

Mold resistance of bamboo treated with copper complexes-grafted silica gel and its microdistribution in treated bamboo

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