Tailoring cotton fabric with wettability gradient and anisotropic penetration of liquid by spray coating

Widodo, Mohamad; Handayani, Atih Fauzi; Sumaryadi, Gugun

doi:10.1080/00405000.2019.1676509

Cited by 6 publications

(5 citation statements)

References 23 publications

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“…Liquid-diode behavior across a permeable porous medium has been demonstrated by Wu et al and Mates et al, who demonstrated that when a nonwoven porous material was rendered hydrophobic on one side and hydrophilic on the other, a liquid droplet dispensed on the hydrophobic side could penetrate to the opposite side (provided the Laplace pressure inside the droplet exceeded the threshold penetration pressures of the porous structure), but a similar transport in the reverse direction (i.e., from the hydrophilic side to the hydrophobic one) was prevented. Widodo et al demonstrated similar directional penetration across cotton fabrics by spraying a commercially available hydrophobizing spray on one side and leveraging the intrinsic wettable nature of cotton on the other. Shou and Fan proposed an all-hydrophilic fluid diode using porous materials having asymmetric pores.…”

Section: Passive Liquid-transport Mechanismsmentioning

confidence: 99%

Patterning Wettability for Open-Surface Fluidic Manipulation: Fundamentals and Applications

et al. 2022

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Effective manipulation of liquids on open surfaces without external energy input is indispensable for the advancement of point-of-care diagnostic devices. Open-surface microfluidics has the potential to benefit health care, especially in the developing world. This review highlights the prospects for harnessing capillary forces on surface-microfluidic platforms, chiefly by inducing smooth gradients or sharp steps of wettability on substrates, to elicit passive liquid transport and higher-order fluidic manipulations without off-the-chip energy sources. A broad spectrum of the recent progress in the emerging field of passive surface microfluidics is highlighted, and its promise for developing facile, low-cost, easy-to-operate microfluidic devices is discussed in light of recent applications, not only in the domain of biomedical microfluidics but also in the general areas of energy and water conservation.

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Section: Passive Liquid-transport Mechanismsmentioning

confidence: 99%

Patterning Wettability for Open-Surface Fluidic Manipulation: Fundamentals and Applications

et al. 2022

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“…DWT fabrics with structural design do not use chemical reagents, which can directly come into contact with the human skin and provide stable directional water transfer performance. Many studies have reported that asymmetric wettability could be achieved by adjusting the thickness of the hydrophilic or hydrophobic layer of the fabric [31][32][33].…”

Section: Structural Designmentioning

confidence: 99%

Review on the Development and Application of Directional Water Transport Textile Materials

Xiao

Kan

2022

Coatings

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Moisture (sweat) management in textile products is crucial to regulate human thermo-physiological comfort. Traditional hydrophilic textiles, such as cotton, can absorb sweat, but they retain it, leading to undesired wet adhesion sensation and even excessive cooling. To address such issues, the development of functional textiles with directional water transport (DWT) has garnered great deal of interest. DWT textile materials can realize directional water transport and prevent water penetration in the reverse direction, which is a great application for sweat release in daily life. In this review article, the mechanism of directional water transport is analyzed. Then, three key methods to achieve DWT performance are reviewed, including the design of the fabric structure, surface modification and electrospinning. In addition, the applications of DWT textile materials in functional clothing, electronic textiles, and wound dressing are introduced. Finally, the challenges and future development trends of DWT textile materials in the textile field are discussed.

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“…Wei et al 19 (2019) produced a nonwoven filter with asymmetric wettability in the thickness direction by applying various oleophobic coatings to one side of a superoleophilic filter. Widodo et al 20 (2020) prepared cotton fabric with various chemical concentration gradients along the thickness direction by controlling process parameters such as the size of the droplets and the amount of water-repellent chemical used during a spray coating process. These studies provided useful fabrication strategies for the development of fabrics with asymmetric wettability for specific applications by adjusting the thickness of the hydrophilic or hydrophobic layer on one side of the fabric.…”

Section: Introductionmentioning

confidence: 99%

Wettability Gradient-Structured Bicomponent Polylactic Acid–Viscose Composite Fabrics with Enhanced Asymmetric Water Penetration Characteristics

Zhen

Zhang

et al. 2021

ACS Appl. Polym. Mater.

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Fabrics with asymmetric water penetration characteristics play an important role in our daily lives because they are often used in hygiene and medical applications. However, the existing materials have serious limitations, such as low durability and complex manufacturing processes. Herein, we report a bicomponent polylactic acid−viscose (PLA-VIS) composite fabric with a wettability gradient. The fabric can be manufactured industrially by a simple process that combines two compatible methods: needle punching and through air bonding. Five-layer cross-laid fibrous webs with various mass ratios of VIS fiber distribution were laminated in the thickness direction to produce a wettability gradient. Owing to its wettability gradient index (R v ) and porosity, the resulting composite fabric had enhanced asymmetric water penetration characteristics. Its accumulative one-way transport index (AOTI) increased from 77.8 to 165.6% as the R v value increased from 0 to 1.5; its saturated water adsorption rate increased by 14.1 times and its water retention rate increased by 11.6 times as the porosity increased from 90 to 96%. Moreover, its water wicking performance clearly demonstrated that there was a large difference in water wetting capacity between the two sides of the fabric. The PLA-VIS composite fabric described herein has potential for use in hygiene and medical applications.

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Tailoring cotton fabric with wettability gradient and anisotropic penetration of liquid by spray coating

Cited by 6 publications

References 23 publications

Patterning Wettability for Open-Surface Fluidic Manipulation: Fundamentals and Applications

Patterning Wettability for Open-Surface Fluidic Manipulation: Fundamentals and Applications

Review on the Development and Application of Directional Water Transport Textile Materials

Wettability Gradient-Structured Bicomponent Polylactic Acid–Viscose Composite Fabrics with Enhanced Asymmetric Water Penetration Characteristics

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