Quantifying Wetting and Wicking Phenomena in Cotton Terry as Affected by Fabric Conditioner Treatment

Meeren, Paul Van der; Cocquyt, Jan; Flores, Silvia; Demeyere, Hugo; Declercq, Marc

doi:10.1177/004051750207200509

Cited by 21 publications

(6 citation statements)

References 11 publications

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“…This is not surprising for the former, since the first layer of that system is hydrophobic, forcing water to remain on the warm sample holder for efficient evaporation. We deduce that the cotton employed here in the Hygro sample also behaved hydrophobically at the beginning of the wetting process, requiring a sufficiently large quantity of moisture to attain its characteristic hygroscopicity [8,14].…”

Section: Discussionmentioning

confidence: 84%

X-Ray Tomography Measurements of the Moisture Distribution in Multilayered Clothing Systems

Weder

Brühwiler

Laib

2006

Textile Research Journal

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The transport of moisture in textile layers plays an important role in the conveyance of thermal energy through those layers. During physical activity, a constant core temperature can in general only be maintained through the dissipation of thermal energy. As is well known, this can take place through radiation, conduction or convection, but for vigorous activity requires perspiration, namely evaporative cooling. If the perspired moisture evaporates directly on the skin, considerably more energy is extracted from the body than when it is transported in a liquid state to outer layers of the clothing, in which case evaporation merely cools the ambient air instead. In a cold climate, dry skin is important for comfort at rest, whereas during activity a more complicated behavior is desirable: Evaporation of moisture on or near the skin while it produces enough perspiration to maintain a wet clothing layer in contact with it, which is when the need for cooling is greatest, followed by rapid removal of the liquid perspiration from the immediate vicinity of the skin as the perspiration rate declines, to avoid overcooling (post-exercise chill). In a warm climate, on the other hand, all liquid perspiration should be evaporated as close to the skin as possible to maximize the cooling effect. To achieve these different moisture-management behaviors in textiles, multilayer configurations are often used, and it becomes important to characterize the distribution of moisture, especially in liquid form, in such multilayers as a function of time.The transport of moisture through multilayer textile combinations has frequently been studied by means of gravimetric analysis in earlier work [1,2,4,5,15]. A major disadvantage of such methods is that a part of the moisture escapes into the ambient air within a few seconds when the layers of clothing are separated for weighing. This is especially the case for materials such as polyester or polypropylene, that store very little moisture themselves and where the moisture can be localized in the capillaries of the intermediate spaces. A second problem is that following the time dependence of the moisture transport requires restarting the entire conditioning and wetting process of the sample for each measurement, which is time-consuming. The inplane distribution of moisture is another important aspect of the problem for which gravimetric analysis is inadequate. 1One method which has largely met these challenges is neutron radiography, which has been shown to be able to give a two-dimensional profile of the moisture distribution of each layer in a multilayer configuration at distinct time intervals [16]. There it was possible to observe the gross temporal progress of the moisture transport, without having to manipulate the clothing systems. While there were Abstract X-ray-tomography was used to investigate the moisture distribution of multilayered textiles under praxis conditions. It was possible to follow the dynamics of the moisture transport without disturbing an ensemble during measuremen...

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Section: Discussionmentioning

confidence: 84%

X-Ray Tomography Measurements of the Moisture Distribution in Multilayered Clothing Systems

Weder

Brühwiler

Laib

2006

Textile Research Journal

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“…A Triton X-114/Tris-HCl buffer coexistence curve was established according to the mist point [24]. Systems were subjected to established temperatures in a water bath for 1 h, and then remained at room temperature for 30 min until complete separation of phases.…”

Section: Aqueous Two-phase Micellar Systemmentioning

confidence: 99%

Optimization of aqueous two-phase micellar system for partial purification of L-asparaginase from Penicillium sp. grown in wheat bran as agro-industrial residue

et al. 2020

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L-asparaginase has been used in the remission of malignant neoplasms such as acute lymphoblastic leukemia. The search for new sources of this enzyme has become attractive for therapeutics. Traditional methods for biomolecule purification involve several steps. A two-phase system may be a good strategy to anticipate one of these stages. This study aimed to produce and purify a fungal L-asparaginase through an aqueous two-phase micellar system (ATPMS) using Triton X-114. The fungus Penicillium sp.-encoded 2DSST1 was isolated from Cerrado soil. Plackett-Burman design followed by a 2 4 full factorial design was used to determine the best conditions to produce L-asparaginase. The evaluated variables were L-asparagine, L-proline, wheat bran, potato dextrose broth, ammonium sulfate, yeast extract, sucrose and glucose concentrations, incubation temperature, incubation period, and initial pH of the culture medium. L-asparaginase quantification was valued by the formation of β-aspartyl hydroxamate. The significant positive variables, L-asparagine, L-proline, potato dextrose broth, and sucrose concentrations, were evaluated at 2 levels (+ 1 and − 1) with triplicate of the central point. After 34 runs, maximum activity (2.33 IU/mL) was achieved at the factorial design central point. A central composite design was performed in ATPMS at two levels (+ 1 and − 1) varying Triton X-114 concentration (w/v), separation phase temperature, and crude extract concentration (w/v). The Lasparaginase partition coefficient (K) was considered the experimental design response. Out of the 16 systems that were examined, the most promising presented a purification factor of 1.4 and a yield of 100%.

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“…A lower contact angle results in higher wicking rates. Hartzell [9], Hsieh [10], Navaneetha and Selvarajan [11], and Van Der Meeren et al [12] investigated methods to improve cotton fabric wettability. However, in materials based on natural fibers, wetting causes the fabric to swell, changing the capillary space position Abstract Liquid transporting and drying rate are two vital factors affecting the physiological comfort of sport garments.…”

Section: Introductionmentioning

confidence: 99%

Wicking Behavior and Drying Capability of Functional Knitted Fabrics

Fangueiro

Filgueiras

Soutinho

et al. 2010

Textile Research Journal

120

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 This research focuses on making double-layer complex wrapped yarn using stainless steel fiber (S), rayon yarn, and PET bamboo charcoal yarn in rotor twister. During the process, the twisting speed of the rotor twister was changed. The functional complex thermal-regulating/wicking conductive wrapped yarn of different twisting speeds (2~6 turns/cm) were fabricated using the Fully Computerized Hosiery Machine. The effects of different twisting speeds on the far-infrared emissivity, air permeability, and water absorption of the functional complex thermal-regulating/wicking conductive wrapped yarn were discussed. In the end, the functional knitted fabrics and hosiery with thermal-regulating/wicking conductive properties were made.

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Quantifying Wetting and Wicking Phenomena in Cotton Terry as Affected by Fabric Conditioner Treatment

Cited by 21 publications

References 11 publications

X-Ray Tomography Measurements of the Moisture Distribution in Multilayered Clothing Systems

X-Ray Tomography Measurements of the Moisture Distribution in Multilayered Clothing Systems

Optimization of aqueous two-phase micellar system for partial purification of L-asparaginase from Penicillium sp. grown in wheat bran as agro-industrial residue

Wicking Behavior and Drying Capability of Functional Knitted Fabrics

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