The Experts below are selected from a list of 4296 Experts worldwide ranked by ideXlab platform
Kyung Hwa Hong - One of the best experts on this subject based on the ideXlab platform.
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Crosslinking phenolic compounds with cotton fabrics using succinic acid to develop Functional Clothing materials
Fibers and Polymers, 2016Co-Authors: Kyung Hwa HongAbstract:There is currently much interest in natural compounds as bioactive Functional components to replace synthetic Functional agents in many industrial fields. This trend has also arisen in the textile industry. Phenolic compounds, existing in many fruits and vegetables, are a well-known group of secondary metabolites with a wide range of pharmacological activities. Thus, they have been attracting attention as part of the effort to realize environmentally friendly Functional agents for textile finishing. In current research, cotton fabrics were treated with several phenolic compounds to transpose their beneficial characteristics onto Clothing material. In particular, the treatment was conducted in two steps; the first to incorporate a crosslinker onto cotton cellulose, and the second to bond the phenolic compound to the crosslinker already anchored onto the cotton fabrics. A more efficient textile treatment was expected after employing the two-step process. After the finishing process, the cotton fabrics treated with phenolic compounds were investigated by FT-IR, SEM, an antibacterial test, and an antioxidant test. It was discovered that cotton fabrics treated with the two-step process showed >99.9 % of antibacterial ability and >80 % of antioxidant ability, even at lower concentrations of the crosslinker and phenolic compounds compared to those in earlier work.
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Phenol compounds treated cotton and wool fabrics for developing multi-Functional Clothing materials
Fibers and Polymers, 2015Co-Authors: Kyung Hwa HongAbstract:Phenolic compounds found in many plant-based natural antioxidants inhibit pathogenic growth and are not normally toxic to humans. Therefore, in this study we treated cotton and wool fabrics with phenolic compounds through a pad-dry-cure process and investigated the mechanical properties, antibacterial ability, and antioxidant ability of the fabric samples. Polycarboxylic acid was used to cross-link the phenolic compounds to cellulose, whereas wool fabric did not need a cross-linker because the phenolic compounds easily bond to protein naturally. Consequently, both the cotton and wool fabric samples treated with phenolic compounds revealed excellent antibacterial ability against gram-positive bacteria (>99.9 %) as well as gram-negative bacteria (>99.5). However, with regard to the antioxidant ability, all of the wool fabrics treated with phenolic compounds showed significant antioxidant ability (>90 %); however, the antioxidant ability of most of the cotton fabrics treated with phenolic compounds were insufficient (>35 %). This suggests that the cotton fabrics treated with phenolic compounds lost their hydroxyl groups by cross-linking with polycarboxylic acid, causing phenolic moieties also to lose their antioxidant function.
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Gallnut extract-treated wool and cotton for developing green Functional textiles
Dyes and Pigments, 2014Co-Authors: Eun-mi Koh, Kyung Hwa HongAbstract:Abstract Gallnuts are known to exert various pharmaceutical effects, including anti-inflammatory, antimicrobial, antioxidant, and detoxifying effects. In particular, the gallnut extract is thought to be a safe antimicrobial agent for textile application, since it is of natural origin. Hence, wool and cotton fabrics were treated with the gallnut extract, by using a pad-dry-cure process to develop multi-Functional Clothing material with no harmful effects. Additionally, fabrics were plasma-treated to improve the finishing effect. This study thoroughly investigated the surface appearance, mechanical properties, antimicrobial ability, and antioxidant performance of gallnut extract-treated wool and cotton fabrics. Gallnut extract treatment was found to impose the antimicrobial and antioxidant properties on the wool and cotton fabrics.
S.s. Yadaw - One of the best experts on this subject based on the ideXlab platform.
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Study on moisture vapor transmission characteristics of woven fabrics from cotton-acrylic bulked yarns
Journal of The Textile Institute, 2013Co-Authors: S.s. YadawAbstract:The fabrics made from bulked yarn are commonly used in Functional Clothing. It is very important to understand the moisture vapor transmission characteristics through these fabrics. The present paper deals with a detailed study to understand the phenomenon of moisture vapor transmission through bulked fabrics, which may affect the heat stress and the performance of wearer. Cotton-acrylic bulked yarns of different linear densities, proportion of shrinkable acrylic fiber, and twist levels have been developed as per the three-variable three-level factorial design technique proposed by Box and Behnken. The interaction effects of these variables on the moisture vapor transmission rate (MVTR) of fabrics have been studied. The influence of these three variables on the MVTR at different time intervals was also studied in details. The response surface equations for all the microclimate parameters have been derived and the surface and contour plots were obtained to analyze the interactive effect of all the variable...
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Study on moisture vapor transmission characteristics of woven fabrics from cotton-acrylic bulked yarns
Journal of the Textile Institute, 2013Co-Authors: Apurba Das, S.s. YadawAbstract:The fabrics made from bulked yarn are commonly used in Functional Clothing. It is very important to understand the moisture vapor transmission characteristics through these fabrics. The present pap...
Bastian E. Rapp - One of the best experts on this subject based on the ideXlab platform.
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Transparent, abrasion-insensitive superhydrophobic coatings for real-world applications
Scientific Reports, 2017Co-Authors: Dorothea Helmer, Nico Keller, Frederik Kotz, Friederike Stolz, Christian Greiner, Tobias M. Nargang, Kai Sachsenheimer, Bastian E. RappAbstract:Superhydrophobic surfaces and surface coatings are of high interest for many applications in everyday life including non-wetting and low-friction coatings as well as Functional Clothing. Manufacturing of these surfaces is intricate since superhydrophobicity requires structuring of surfaces on a nano- to microscale. This delicate surface structuring makes most superhydrophobic surfaces very sensitive to abrasion and renders them impractical for real-life applications. In this paper we present a transparent fluorinated polymer foam that is synthesized by a simple one-step photoinitiated radical polymerization. We term this material “Fluoropor”. It possesses an inherent nano-/microstructure throughout the whole bulk material and is thus insensitive to abrasion as its superhydrophobic properties are not merely due to a thin-layer surface-effect. Due to its foam-like structure with pore sizes below the wavelength of visible light Fluoropor appears optically transparent. We determined contact angles, surface energy, wear resistance and Vickers hardness to highlight Fluoropor’s applicability for real-word applications.
Jintu Fan - One of the best experts on this subject based on the ideXlab platform.
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"Skin-like" fabric for personal moisture management.
Science Advances, 2020Co-Authors: Lihong Lao, Dahua Shou, Jintu FanAbstract:Personal moisture management fabrics that facilitate sweat transport away from the skin are highly desirable for wearer’s comfort and performance. Here, we demonstrate a “skin-like” directional liquid transport fabric, which enables continuous one-way liquid flow through spatially distributed channels acting like “sweating glands” yet repels external liquid contaminants. The water transmission rate can be 15 times greater than that of best commercial breathable fabrics. This exceptional property is achieved by creating gradient wettability channels across a predominantly superhydrophobic substrate. The flow directionality is explained by the Gibbs pinning criterion. The permeability, mechanical property, and abrasion resistance (up to 10,000 cycles) of the fabric were not affected by the treatment. In addition to Functional Clothing, this concept can be extended for developing materials for oil-water separation, wound dressing, geotechnical engineering, flexible microfluidics, and fuel cell membranes.
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The gravitational effect on the geometric profiles of droplets on horizontal fibers
Soft Matter, 2013Co-Authors: Maofei Mei, Jintu Fan, Dahua ShouAbstract:Understanding the growth or reduction of droplets on fibers during condensation or evaporation is fundamental to many applications of fibrous materials including fiber filters, water harvesting, and Functional Clothing. However, the effect of gravity on the geometry of droplets is still unclear. In this work, the shape change of droplets hanging from a horizontally cylindrical fiber was investigated experimentally. It was found that the relative size (as measured by the characteristic maximum height) of the NRS droplet relative to the fiber radius is inversely related to the fiber radius, meaning that (1) finer fibers can hold relatively large droplets and are therefore preferred for filtration and Functional Clothing, (2) the profile of the contact line between the NRS droplet and the fiber, which is crucial to understanding the gravitational effect on the shape of the droplet on the fiber, is most likely to be a spiral line in 3-D space.
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Clothing Thermal Insulation During Sweating
Textile Research Journal, 2003Co-Authors: Y.s. Chen, Jintu Fan, W. ZhangAbstract:Heat transfer through Clothing is an important topic related to thermal comfort in environmental engineering and Functional Clothing design. The total heat transmitted through Clothing is commonly ...
Tailiang Guo - One of the best experts on this subject based on the ideXlab platform.
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Wearable ultra-lightweight solar textiles based on transparent electronic fabrics
Nano Energy, 2017Co-Authors: Tae Whan Kim, Tailiang GuoAbstract:Abstract Wearable solar textiles have currently emerged as excellent candidates for potential applications in next-generation wearable Functional Clothing. Here, we report a wearable ultra-lightweight polymer solar textile based on transparent electronic fabrics (e-fabrics). The transparent e-fabrics with a structure of polyester/Ag nanowires/graphene core-shell have been used as anodes, as well as transparent substrates, for solar textiles. The anode buffer layer and the bulk heterojunction layer were deposited by blade-coating them onto the e-fabrics. The fabricated solar textiles show a power conversion efficiency of 2.27%, a low areal density of 5.0 mg/cm 2 , good endurance against mechanical deformations, and high compatibility with Clothing. These results indicate that these novel solar textiles hold potential applications in the field of wearable self-powered portable electronics.
