Hydrophobic materials and coatings: principles of design, properties and applications

Бойнович, Л. Б.; Emelyanenko, Alexandre M.

doi:10.1070/rc2008v077n07abeh003775

Cited by 312 publications

(134 citation statements)

References 8 publications

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“…Liquid drops can also remain suspended on many rough and textured surfaces of hydrophilic materials if the three-phase system is trapped in a metastable state (see Figure 5). 64,65 The invasion of liquid can be inhibited on material surfaces through careful selection of the design, geometry, size and contour of surface features and protrusions. 64,[66][67][68] An energy barrier unfavorable to liquid wicking may be maximized in this manner.…”

Section: Defining Superhydrophobicity and Superhydrophilicitymentioning

confidence: 99%

Physics and applications of superhydrophobic and superhydrophilic surfaces and coatings

Drelich

Marmur

2014

Surface Innovations

156

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The terms superhydrophobicity and superhydrophilicity were introduced not very long ago, in 1996 and 2000, respectively.The former is used to describe exceptionally weak and the latter used to indicate strong interactions of materials and IntroductionAfter more than two centuries of research, capillarity and wetting phenomena still remain popular topics of investigation in many modern surface chemistry laboratories. Curiosity and fascination with rain droplets splashing in a puddle, water droplets decorating flowers, leaves of plants and fruits after rain or watering and colorful soap bubbles shaped at the end of wheat straw have never been stronger and go beyond scientific laboratories. Colorful images of liquid droplets and puddles, illustrating their behavior on a variety of surfaces, thrive in professional journals, popular magazines and Internet. However, terms such as wetting, spreading and contact angle are still puzzling to the layman and beginner researcher. To facilitate

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Section: Defining Superhydrophobicity and Superhydrophilicitymentioning

confidence: 99%

Physics and applications of superhydrophobic and superhydrophilic surfaces and coatings

Drelich

Marmur

2014

Surface Innovations

156

View full text Add to dashboard Cite

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“…Additionally, surface irregularities and, as a result, air contained in the surface layer, are factors, which contribute to the heterogeneous regime wetting (the wetting model of Cassie-Baxter). The latter refers to one of the necessary conditions for achieving the hydrophobicity of the surface [10][11][12]. Investigation of leather morphology with a rough, heterogeneous facial layer and its influence on the hydrophobic-hydrophilic properties will set the peculiarities of the formation of water-repellent characteristics and conditions of hydrophobic treatment.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Morphology of Leather Surface on the Hydrophobic-Hydrophilic Properties

Серенко¹,

Nizamova²,

Kalinin³

et al. 2014

AMPC

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Natural leathers (split, velour split, nubuck) ware investigated. Solution of fluorine silane in ethanol was applied as the hydrophobic agent. It is shown that the microstructure of the leather surface, provided its structural elements possess hydrophilic properties, determines the wetting regime and duration of the induction period of changeover from heterogeneous to homogeneous wetting. The heterogeneous regime of wetting is distinguished by low rates of spreading and absorbing. The homogeneous wetting is characterized by high rates of spreading and absorbing of a water drop. A necessary condition of the stable heterogeneous wetting regime and achieving hydrophobicity of leather with structurally inhomogeneous face layer is to preserve the microstructure features of their surface at hydrophobic treatment. The morphological peculiarities of split and ground leather ensure stable hydrophobic properties after application of efficient hydrophobizators.

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“…[8][9][10][11] By grasping the mechanism that governs liquid-solid interactions, solid surfaces can be designed and fabricated to meet demands in industrial applications, such as slippery superhydrophobic surfaces for self-cleaning, 12,13 anti-icing, [14][15][16] drag reduction 13 and enhanced condensation, 17 sticky superhydrophobic surfaces for liquid capturing, [18][19][20] superhydrophobic fabric for water and dirt resistance, 21 superhydrophilic surfaces for boiling 22 and water collection 23 and other surfaces. 24 Adhesion force measurement is an effective way to quantify the interactions between liquid and solid surfaces. Measurements of capillary and surface tension forces by using tensiometry date back centuries.…”

Section: Introductionmentioning

confidence: 99%

Direct Measurements of Adhesion Forces for Water Droplets in Contact with Smooth and Patterned Polymers

SunYujin

Jiang

ChoiChang-Hwan

et al. 2017

Surface Innovations

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A microelectronic balance system was employed to measure the force of spreading (snap-in force) during water droplet attachment and spreading on polymer surfaces and the water-polymer adhesion forces (maximum adhesion and pulloff forces) after droplet compression, retreat and detachment. Equipped with a charge-coupled device camera and data acquisition software, the instrument measured directly the forces; monitored droplet-surface separation, including distances over which droplet stretched; and collected optical images simultaneously. The images were used to analyze capillary and surface tension forces based on measured droplet shape, surface curvature, droplet base radius and values of contact angles. The forces measured with the microbalance were compared to calculated capillary/surface tension forces. Nearly excellent agreement between directly measured and calculated forces was verified for polymers with smooth surfaces. Experiments with patterned polymers with pores and pillars revealed that interpretation of forces requires knowledge of a triple-contact-line characteristic. One relevant parameter, named normalized contact line length, was introduced to surface tension forces to quantify forces measured directly with a microbalance.

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Hydrophobic materials and coatings: principles of design, properties and applications

Cited by 312 publications

References 8 publications

Physics and applications of superhydrophobic and superhydrophilic surfaces and coatings

Physics and applications of superhydrophobic and superhydrophilic surfaces and coatings

Effect of the Morphology of Leather Surface on the Hydrophobic-Hydrophilic Properties

Direct Measurements of Adhesion Forces for Water Droplets in Contact with Smooth and Patterned Polymers

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