scholarly journals Structural design and vertical wicking behavior of cotton roving-based materials for nutrient transport of indoor plant

2021 ◽  
Vol 16 ◽  
pp. 155892502110667
Author(s):  
Changliu Chu ◽  
Chengwen Hu ◽  
Yanyan Sun ◽  
Hongqin Yan ◽  
Yadong Zhang ◽  
...  
Keyword(s):  
Structural Design ◽  
Mixed Solution ◽  
Transport Capacity ◽  
Technological Parameters ◽  
Liquid Transport ◽  
Moisture Management ◽  
Vertical Wicking ◽  
Strengthen Effect ◽  
Hydrophilic Treatment ◽  
Underlying Mechanisms

The liquid transport capacity in a fibrous textile is of great crucial in comprehensively assessing the final moisture management. In this work, several materials were prepared based on cotton rovings by regulating some technological parameters such as twist and ply number, and the effects of the above key parameters on vertical wicking behavior of cotton roving-based materials were investigated. To effectively improve the wicking rate of materials, three hydrophilic schemes were introduced. The experimental results indicated that the maximum vertical wicking height was obtained when samples treated with a mixed solution of 1.5% JFC and 3% NaOH. Subsequently, several cotton roving-based materials were fabricated based on the optimized hydrophilic treatment. It was found that, the as-prepared materials exhibit a twist-reduced wicking effect, and a ply number-strengthen effect. Furthermore, the underlying mechanisms in the above two cases were unraveled. Finally, our prepared cotton roving-based materials served as a nutrient absorbing medium were demonstrated. Such work provides certain support for an in-depth understanding of wicking behavior of microporous textile structures.

scholarly journals Performance of recycled PET and conventional PES fibers in case of watertransport properties

2020 ◽  
Vol 71 (06) ◽  
pp. 538-544
Author(s):  
MEHDI HATAMLOU ◽  
ARIF TANER ÖZGÜNEY ◽  
NILGÜN ÖZDİL ◽  
GAMZE SÜPÜREN MENGÜÇ
Keyword(s):  
Transport Properties ◽  
Skin Surface ◽  
Absorption Capacity ◽  
Transfer Property ◽  
Recycled Pet ◽  
Vapour Permeability ◽  
Moisture Management ◽  
Vertical Wicking ◽  
Significant Difference ◽  
Polyester Fibers

In recent years the researches on liquid moisture transport properties of fabrics have great importance. Especially forthe sport garments, fabric structure should led liquid moisture to transfer from skin surface to the outer layers. Specialfibers and fabric structures were designed including channelled fibers and micro fiber productions to contribute highercapillary transport capability to the textile surface. Polyester fibers are used for this purpose frequently. Due to theincrease in the demand of sustainable textiles, production and consumption of recycled polyester fibers are increasingrecently. They are expected to have adequate mechanical properties to fulfil requirements. In this study, liquid moisturetransfer properties of the polyester and r-PET fabrics were investigated. For this purpose, knitted fabrics produced from100% polyester and 100% r-PET yarns were used. Dynamic liquid transport properties, capillary transfer property, dryingrate and water absorption capacity of these surfaces were measured. According to the results, it was concluded thatboth fabrics were identified as “good” by using “Moisture Management Tester”, in case of liquid moisture transferproperties. No significant difference was determined between water vapour permeability values. Static immersion test ishelpful in order to determine wettability for the identification of sensitive differences and as a conventional method,vertical wicking test is a good indicator while distinguishing capillarity differences. It was found that r-PET fabric hasbetter results than PES fabric, in case of absorption rate, wettability, drying rate and capillarity.

An effect of fabrics thickness and structure on moisture management properties of 3D spacer fabrics

2019 ◽  
Vol 31 (6) ◽  
pp. 777-789
Author(s):  
Palani Rajan T. ◽  
Prakash C. ◽  
Ramakrishnan G.
Keyword(s):  
Outer Surface ◽  
Water Reservoir ◽  
Middle Layer ◽  
Surface Layers ◽  
Content Type ◽  
Moisture Management ◽  
Vertical Wicking ◽  
Spacer Fabric ◽  
Liquid Movement ◽  
Polyester Monofilament

Purpose Polyester multifilament is used to produce the face and back layer of warp knitted spacer fabric (WKSF) and these two layers are connected by polyester monofilament as a middle layer. This fabric has unique and extraordinary characteristics, and different possibilities of fabric structure and the middle layer thickness are tried to find out the moisture management properties. The paper aims to discuss these issues. Design/methodology/approach This study investigates the influence of fabric thickness and structure on moisture management properties. Findings Polyester monofilament quickly up takes the water molecule from the water reservoir and transfers it by capillary action. The gravitational force and the availability space between the two outer surface layers restrict the movement of water molecules, although the pressure develops to push the molecules from the water reservoir. As a result, all the spacer fabric samples attain the equilibrium state very quickly. WKSF and the hexagonal net structure prove to be better in vertical wicking. Originality/value The liquid movement is quick in the front side of the spacer fabric, and the rate of wicking is higher in open structure than in the closed structure. It confirms that the hexagonal net structure produces high pore size on fabric and it reaches maximum wicking values. Fabric thickness does not have much influence on the vertical wicking properties of all fabric samples, and the rate of liquid movement produces a similar trend. In in-plane wicking, the polyester monofilament in the middle layer of spacer fabric plays a major role rather than the outer surface layers of fabric.

Nanostructured superhydrophobic lyocell fabrics with asymmetric moisture absorbency: Moisture managing properties

2016 ◽  
Vol 87 (7) ◽  
pp. 807-815 ◽  
Author(s):  
Seong-ok Kwon ◽  
Jooyoun Kim ◽  
Myoung-Woon Moon ◽  
Chung Hee Park
Keyword(s):  
Water Absorption ◽  
Transmission Rate ◽  
Chemical Vapor ◽  
Absorption Capacity ◽  
Wound Dressings ◽  
Water Repellent ◽  
Water Contact ◽  
Moisture Management ◽  
Vertical Wicking ◽  
Opposite Face

This study investigated moisture management properties of a single-faced superhydrophobic fabric. A single-faced superhydrophobic lyocell fabric, where one face of the surface is superhydrophobic and the opposite face is hydrophilic, was produced by a two-step plasma process on one side of the fabric: (1) the addition of nano-scale roughness by 5 minutes of O2 plasma etching; (2) subsequent 30 seconds of plasma enhanced chemical vapor deposition with hexamethyldisiloxane to lower the surface energy of lyocell fibers. As a result, the superhydrophobic lyocell fabric exhibited water repellency with a static water contact angle greater than 161° on the treated surface, allowing water absorption from the untreated face. The nanometer depth of the superhydrophobic layer in the hydrophilic textile affected water absorption capacity, drying rate, vertical wicking rate, and moisture management properties. The air permeability and water vapor transmission rate of the superhydrophobic treated lyocell fabric were hardly changed. The superhydrophobic properties were maintained after a gentle wash cycle, although the level of superhydrophobicity was reduced, especially when it was washed with detergent. This superhydrophobic and moisture managing textile would be relevant for an application that requires a water repellent property on one face and water absorbing property on the opposite face, such as medical operation gowns, wound dressings, and hygienic products.

Analysis of Water Transport Properties for Plant Structured Textile Fabric

2009 ◽  
Vol 79-82 ◽  
pp. 87-90
Author(s):  
Xian Jun Shi ◽  
Ji Hong Wu
Keyword(s):  
Transport Properties ◽  
Water Transport ◽  
Transport Capacity ◽  
Critical Factors ◽  
Liquid Transport ◽  
Factors Affecting ◽  
New Type ◽  
Maximum Water ◽  
Water Transport Properties ◽  
Textile Fabric

Moisture/liquid transport in textile fabric is one of the critical factors affecting physiological comfort. Here we investigate the water transport properties of plant structures textile fabric, which was formed by mimicking the tree structure network. Our work shows that the water transport properties of the new type of material depend on its geometric structures, including the branching level and the diameter and length of the 0th branching level, and the structure fractal dimension. The more the length and the branching level, the lower the water transport capacity. A comparison of the plant structured textile fabric with the general fabric indicates that the plant structured fabric can provide higher moisture transport capacity and its maximum water transport capacity approach 1.707 times higher than that of the general fabric.

scholarly journals Moisture management properties of plain knitted fabrics made of natural and regenerated cellulose fibres

2015 ◽  
Vol 69 (2) ◽  
pp. 193-200 ◽  
Author(s):  
Milada Novakovic ◽  
Lana Putic ◽  
Matejka Bizjak ◽  
Snezana Stankovic
Keyword(s):  
Water Vapour ◽  
Deformation Behaviour ◽  
The Body ◽  
Regenerated Cellulose ◽  
Knitted Fabric ◽  
Surface Geometry ◽  
Knitted Fabrics ◽  
Liquid Transport ◽  
Textile Materials ◽  
Moisture Management

Moisture management is a complicated process which is known to be influenced by a variety of fabric characteristics such as fibre nature (hydrophilic or hydrophobic), porosity and thickness. There are different aspects of the moisture management properties of textile materials since water transport in textile materials can be in the form of liquid and vapour. The ability of textile materials to transfer water vapour allows the human body to keep thermal balance due to evaporation. With stronger physical activity of a person when the body produces a large amount of heat, the skin perspiration increases (in order to regulate the body temperature) and liquid sweat should be taken from the skin, otherwise it will worsen the sense of comfort. The aim of this research was to investigate the factors influencing moisture management properties of plain knitted fabrics at the three scale levels, i.e. microscopic (fibre type), mesoscopic (yarn geometry) and macroscopic (fabric porosity) levels. Plain knitted fabrics were produced from the two-assembled hemp, cotton and viscose yarns under controlled conditions so as to be comparable in basic construction characteristics, but varying in yarns geometry. Evaporative resistance test reflecting vapour transport and water distribution test reflecting liquid transport in the knitted fabrics were conducted. To determine the statistical importance of the results, analysis of variance (ANOVA) was applied. As a consequence of the geometry and deformation behaviour of the fibres used and spinning techniques applied, the yarns differed in both packing density and surface geometry, thus determining the pore distribution. Due to loose structure of the cotton yarn, the cotton knitted fabric was characterised by the lowest free open surface (macroporosity) exhibiting the lowest both water vapour and liquid permeability. Although having the highest macroporosity, the water vapour and liquid transport capability of the hemp knitted fabric was lower than that of the viscose knit. The best moisture management properties of the viscose knitted fabric were resulted from viscose affinity for water absorption and increased surface area of the viscose yarn. The results obtained proved that variations in any of the hierarchical structure levels can modify moisture transport ability of textile fabrics. Therefore, the moisture management properties of textile materials can be guided in a desired direction by the appropriate selection of fibres and careful design of yarn structure.

scholarly journals Investigation of the effect of cotton knitted fabric structure of babywear on moisture management properties

2019 ◽  
Vol 70 (06) ◽  
pp. 495-501
Author(s):  
SERAP BILTEKIN ◽  
AYÇA AYÇA
Keyword(s):  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Liquid Transport ◽  
Fabric Thickness ◽  
Moisture Management ◽  
Management Capability ◽  
Yarn Thickness ◽  
Cotton Knitted Fabric ◽  
Fabric Weight ◽  
Fabric Structures

In recent years, baby clothing has become an important role in the garment sector. The increasing importance of baby clothing, along with the new designs, different fabric structures, accessories and clothing comfort is required to develop. Due to the increasing importance given to baby health in the world, babywears have to be manufactured from materials that are not harmful to health in accordance with the standards. The purpose of this study is to investigate the effect of cotton knitted fabrics structure of babywear on moisture management properties. For this reason, moisture management properties (wetting time, absorption rate, spreading speed, accumulative one-way transport capability (OWTC) and overall moisture management capability (OMMC)) of cotton knitted fabrics of different structures which are widely used in babywear have been examined. Moisture management tester was used for liquid transport of the knitted fabric samples. As a result of the study, it is observed that single jersey fabric had higher OMMC values than these of interlock and 1x1 rib knitted fabrics. Regarding the effect of yarn thickness, liquid transport increased with decreasing yarn thickness in general. Regarding the effect of fabric weight and fabric thickness, liquid transport decreased with increasing weight and thickness in general. Negative correlations were observed between fabric weight, fabric thickness and overall moisture management capability.

scholarly journals Study on Liquid Moisture Transport of Knitted Fabrics by Means of Mmt, Thermography and Microtomography Systems

2015 ◽  
Vol 15 (4) ◽  
pp. 233-242 ◽  
Author(s):  
Renata Nemcokova ◽  
Viera Glombikova ◽  
Petra Komarkova
Keyword(s):  
Moisture Transport ◽  
Three Dimensional ◽  
Image Analysis System ◽  
Knitted Fabrics ◽  
Liquid Drops ◽  
Moisture Management ◽  
Wear Comfort ◽  
Vertical Wicking ◽  
Analysis System ◽  
Porosity Analysis

Abstract Liquid moisture transport of textile structures has been studied in order to manage human perspiration well. This article deals with investigation of dynamic moisture transport of knitted fabrics by sophisticated methods, such as moisture management tester (MMT), thermography and microtomography systems. Three groups of knitted fabrics were analysed by the above-mentioned methods. Specifically, the distribution of liquid drops on samples was compared with the results of vertical wicking of tested materials and the parameter of three-dimensional fabric porosity. Both dynamic spreading of liquid drops on the surface of samples (from top and bottom sides simultaneously) and vertical wicking behaviour of textiles were analysed by the combination of thermography and image analysis system. Further, the results from MMT and porosity analysis by microtomography system were investigated to specify the interaction between structure parameters of knitted fabrics and their liquid transport properties which influence total wear comfort.

scholarly journals Liquid Moisture Transportation Properties of Functional Underwears: Part 1

2019 ◽  
Vol 19 (2) ◽  
pp. 97-103 ◽  
Author(s):  
Sajid Hussainn ◽  
Viera Glombikova ◽  
Nasrullah Akhtar ◽  
Adnan Mazari ◽  
Tariq Mansoor ◽  
...  
Keyword(s):  
Image Analysis ◽  
Significant Influence ◽  
Absorption Rate ◽  
Fiber Type ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Moisture Management ◽  
Vertical Wicking ◽  
Cotton Yarns ◽  
Wetting Time

Abstract This study investigates the effect of material composition on moisture management properties. Fiber type has significant influence on the moisture management properties of knitted fabrics. In this article, single jerseys knitted fabric samples with different yarn compositions were prepared. Liquid moisture transportation properties including wetting time, absorption rate, spreading speed, one-way transportation capability, and OMMC were evaluated by Moisture Management Tester (MMT) and vertical wicking was evaluated using thermography system and image analysis. Knitted sample having fine cotton yarns with coolmax and micro denier multifilament polypropylene showed best liquid transportation properties. There is a strong co-relation between OMMC and accumulative oneway transport index with vertical wicking of knitted samples.

Examination of Extra Electron Diffraction Spots Observed in Deuterium-Irradiated Silicon by Using Parallel Electron Beam Illumination

1990 ◽  
Vol 48 (2) ◽  
pp. 490-491
Author(s):  
Ryuichiro Oshima ◽  
Shoichiro Honda ◽  
Tetsuo Tanabe
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Silicon Single Crystal ◽  
Mixed Solution ◽  
Parallel Beam ◽  
Defect Clusters ◽  
Float Zone ◽  
Transmission Electron ◽  
Extra Electron ◽  
Diffraction Patterns

In order to examine the origin of extra diffraction spots and streaks observed in selected area diffraction patterns of deuterium irradiated silicon, systematic diffraction experiments have been carried out by using parallel beam illumination.Disc specimens 3mm in diameter and 0.5mm thick were prepared from a float zone silicon single crystal(B doped, 7kΩm), and were chemically thinned in a mixed solution of nitric acid and hydrogen fluoride to make a small hole at the center for transmission electron microscopy. The pre-thinned samples were irradiated with deuterium ions at temperatures between 300-673K at 20keV to a dose of 1022ions/m2, and induced lattice defects were examined under a JEOL 200CX electron microscope operated at 160kV.No indication of formation of amorphous was obtained in the present experiments. Figure 1 shows an example of defects induced by irradiation at 300K with a dose of 2xl021ions/m2. A large number of defect clusters are seen in the micrograph.

Sign in / Sign up

Export Citation Format

Share Document