Can superhydrophobic surfaces repel hot water?

Liu, Yuyang; Chen, Xianqiong; Xin, John Haozhong

doi:10.1039/b822168e

Cited by 211 publications

(156 citation statements)

References 22 publications

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“…49 An interesting variation on this has been to coat cotton fibers with carbon nanofibers with a polymer linkage. 50 This has shown good properties against washing and similar surfaces have resisted hot water, 51 factors often causing problems for superhydrophobic textiles. This extreme resistance is probably due to the multiple length scale overhanging fiber structure for reasons described later.…”

Section: Other Fiber Surfacesmentioning

confidence: 99%

The superhydrophobicity of polymer surfaces: Recent developments

Shirtcliffe

McHale

Newton

2011

J Polym Sci B Polym Phys

168

108

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Superhydrophobicity is the extreme water repellence of highly textured surfaces. The field of superhydrophobicity research has reached a stage where huge numbers of candidate treatments have been proposed and jumps have been made in theoretically describing them. There now seems to be a move to more practical concerns and to considering the demands of individual applications instead of more general cases. With these developments, polymeric surfaces with their huge variety of properties have come to the fore and are fast becoming the material of choice for designing, developing, and producing superhydrophobic surfaces.

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Section: Other Fiber Surfacesmentioning

confidence: 99%

The superhydrophobicity of polymer surfaces: Recent developments

Shirtcliffe

McHale

Newton

2011

J Polym Sci B Polym Phys

168

108

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“…omniphobicity) at elevated temperatures have broad practical applications in refinery processes, ethanol concentration, fuel transportation, district heating, and protective fabrics. 1,2 been based on the 'lotus' effect, where micro/nano-structures are carefully designed to maintain an air layer between the structures, forming a stable interface between the substrate and the applied liquid. 3,4 This superhydrophobic interface, however, becomes unstable for low-surface-tension liquids due to their enhanced ability to wet surfaces.…”

mentioning

confidence: 99%

Lubricant-infused micro/nano-structured surfaces with tunable dynamic omniphobicity at high temperatures

Daniel

Mankin

Belisle

et al. 2013

Applied Physics Letters

138

125

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Omniphobic surfaces that can repel fluids at temperatures higher than 100 °C are rare. Most state-of-the-art liquid-repellent materials are based on the lotus effect, where a thin air layer is maintained throughout micro/nanotextures leading to high mobility of liquids. However, such behavior eventually fails at elevated temperatures when the surface tension of test liquids decreases significantly. Here, we demonstrate a class of lubricant-infused structured surfaces that can maintain a robust omniphobic state even for low-surface-tension liquids at temperatures up to at least 200 °C. We also demonstrate how liquid mobility on such surfaces can be tuned by a factor of 1000.

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“…Teflon ® finishes may be applied to fabrics to make them hydrophobic and offer repellency to both water and oil. Repellency of the Teflon ® treated surface to cold water has been well documented (Nilsson et al 2010;Wi et al 2009), but less so to hot water (Liu et al 2009). In fact, Liu et al (2009) found that a reduction in water repellency occurred as the water temperature was increased, which was due to the decrease in surface tension of hot water (Liu et al 2009).…”

Section: Resultsmentioning

confidence: 99%

“…For textiles to be used in scald protection, they should possess high water contact angles and low sliding angles so that the surface of the fabrics are slippery causing the water droplets to roll off from the surface of the fabric. These superhydrophobic fabrics are known to exhibit high repellency to cool water (25 °C), but with increasing water temperature, the surface tension decreases and hence repellency can be significantly lowered particularly to pressurized hot liquid (Liu et al 2009). This was evident in the research by Lu et al (2014), who found that liquid penetration (distilled water, canola oil, drilling fluid) through selected industrial fabrics increased as temperature increased (27, 55, 85 °C).…”

Section: Introductionmentioning

confidence: 99%

Can common finishing treatments used in chef jacket fabrics improve protection against scald injury?

2017

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Chefs and other food preparation workers are at a high risk of scald injuries from hot liquids. Chefs’ clothing has the potential to act as a protective barrier between the skin and the thermal hazard. Although, impermeable barriers coupled with an insulating layer of fabric tend to offer the greatest protection against hot liquid penetration, the potential for heat strain and discomfort to workers may make them impractical in the kitchen environment. This study examined the effects of common finishing treatments used in chef jacket fabrics and the impact of layers on the protection offered against hot water burn injuries. The Teflon® treated fabrics offering combined stain and water repellency, provided the greatest protection with the lowest absorbed energy and longest times to second degree burn injury compared with the other finishes (i.e., regular, water repellent and soil release). Findings also showed that in most cases, increasing the number of layers improved protection provided by the fabric systems, with the Teflon® finished fabrics providing the highest protection against scald injuries as fabric layers increased.

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Can superhydrophobic surfaces repel hot water?

Cited by 211 publications

References 22 publications

The superhydrophobicity of polymer surfaces: Recent developments

The superhydrophobicity of polymer surfaces: Recent developments

Lubricant-infused micro/nano-structured surfaces with tunable dynamic omniphobicity at high temperatures

Can common finishing treatments used in chef jacket fabrics improve protection against scald injury?

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