Tactile Comfort and Low-Stress Mechanical Properties of Half-Bleached Knitted Fabrics Made from Cotton Yarns with Different Parameters

Fabric hand is an indispensable characteristic for the selection of fabric and product development and the buying consideration for manufacturers and consumers. However, there is little comprehensive work on the hand feel property of warp-knitted fabrics due to the mainstream natural fibers (cotton, wool and silk) and other fabric structures (woven, weft-knitted and nonwoven). The increasing potential for the wide variety of applications and development of warp-knitted fabrics is not only because its fabric hand gives better determination for fabric marketing, but also because it provides extensive scope for fabric performance and appearance. This paper reports an experimental study on the integrated fabric hand behavior of a series of warp-knitted fabrics made for various apparel applications, such as sportswear, lingerie and leisure wear. These 105 fabrics were produced by varying different physical parameters, including fabric weight and fabric thickness. The Kawabata Evaluation System for Fabric (KES-F) was employed to obtain the fabric hand properties (primary hand value and total hand value) related with stiffness, smoothness and softness. All low-stress mechanical properties and fabric hand values from the testing results were used to verify the applicability of the KES-F on warp-knitted fabrics and to analyze the relationships of fabric parameters and hand characteristics. The results indicate that the KES-F is an appropriate tool to measure the hand attributes of warp-knitted samples, and moderate correlations between physical properties and mechanical behavior were found.

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The performance properties of the yarn and fabrics produced from different types of cotton

Industria Textila ◽

10.35530/it.070.05.1651 ◽

2019 ◽

Vol 70 (05) ◽

pp. 398-402

Author(s):

DIRGAR ESRA ◽

ORAL OKSAN ◽

OZDIL NILGUN

Keyword(s):

Mechanical Properties ◽

Breaking Strength ◽

Knitted Fabrics ◽

Performance Properties ◽

Different Types ◽

Significance Levels ◽

Cotton Yarns ◽

The Relationship ◽

Study Performance ◽

Single Jersey

In this study, performance properties of single jersey knitted fabrics made from Aegean cotton, Supima cotton and Giza cotton yarns are investigated. Firstly, Uster parameters and breaking strength of the yarns were examined and then the properties of the fabrics knitted from these yarns were evaluated statistically. The significance levels of the relationship between the measured parameters were determined. Considering the results obtained with the mechanical properties of the fabrics with Uster analysis applied to these yarns, it is seen that the yarns made from Supima and Giza cotton fibers in extra long fiber category have more smooth, less hairiness, contain less neps and the fabrics knitted with these yarns have high mechanical properties.

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Physical properties of single jersey derivative knitted cotton fabric with tuck and miss stitches

Journal of Engineered Fibers and Fabrics ◽

10.1177/1558925020928532 ◽

2020 ◽

Vol 15 ◽

pp. 155892502092853

Author(s):

Alemayehu Assefa ◽

Nalankilli Govindan

Keyword(s):

Mechanical Properties ◽

Physical Properties ◽

Textile Industry ◽

Areal Density ◽

Knitted Fabrics ◽

Commercial Use ◽

Fabric Drape ◽

Loop Shape ◽

Low Stress Mechanical Properties ◽

Single Jersey

The effect of different stitch combinations, namely, knit, tuck and miss stitches, on some of the physical properties of single jersey derivative fabrics have been studied. Fabrics which are in common commercial use in the textile industry were selected, and they are used as clothing fabrics. Knitted fabrics from 100% cotton yarn of 19.67 Tex on circular knitting machines were used in the study. The effect of knit structure on areal density, fabric thickness, air permeability, drape ability, stretch and recovery, shrinkage, and low-stress mechanical properties are investigated, and it was found that these properties are significantly affected by loop shape or knit structure, even though other knitting parameters remained the same. It was also found that the presence of tuck and float stitches for a given structure have a significant effect on fabric drape ability, width-wise extensibility, length-wise shrinkage, thickness, areal density and low-stress mechanical properties.

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Prediction of Certain Low Stress Mechanical Properties of Knitted Fabrics from Their Structural Parameters

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501501000202 ◽

2015 ◽

Vol 10 (2) ◽

pp. 155892501501000

Author(s):

R. Varadaraju ◽

J. Srinivasan

Keyword(s):

Mechanical Properties ◽

Structural Parameters ◽

Tensile Elongation ◽

Shear Rigidity ◽

Bending Rigidity ◽

Knitted Fabrics ◽

Spun Yarn ◽

Ring Spun Yarn ◽

Low Stress Mechanical Properties ◽

Fabric Shear

Knitted fabrics are preferred as clothing materials because of of their outstanding comfort quality. 16 plain knitted fabric samples were produced from 4 combed ring spun yarn of linear densities 29.5 Tex, 23.6, Tex 19.7 Tex and 17.4 Tex and 4 different stitch lengths from each yarn linear density were selected for this study. The fabric samples were relaxed and then tested for tensile shear and bending properties using Kawabata tester's. KES- FB1and KES- FB2. The effect of various fabric structural parameters on fabric low stress mechanical properties was studied. The fabric shear rigidity, bending rigidity, shear hysteresis, bending hysteresis, and tensile linearity were positively correlated with the fabric GSM, thickness, and tightness factor and negatively correlated with fabric linear Stitch modulus, areal stitch modulus, volume stitch modulus, and porosity. The fabric tensile elongation was positively correlated with the fabric linear stitch modulus, areal stitch modulus, volume Stitch modulus, and porosity and negatively correlated with the fabric GSM, thickness, and fabric tightness factor. The above properties were higher in course direction than in wale direction. Separate prediction equations were developed for fabric low stress mechanical properties from Tightness factor, Volume Stitch modulus, and Porosity

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Experimental and analytical analyses of the knitted fabric off-axes tensile test

Textile Research Journal ◽

10.1177/0040517520933701 ◽

2020 ◽

Vol 91 (1-2) ◽

pp. 62-72 ◽

Cited By ~ 1

Author(s):

Željko Penava ◽

Diana Šimić Penava ◽

Lozo Miloš

Keyword(s):

Mechanical Properties ◽

Correlation Coefficients ◽

Knitted Fabric ◽

Total Work ◽

Fabric Anisotropy ◽

Knitted Fabrics ◽

Axial Tensile ◽

Tensile Forces ◽

Cotton Yarns

Determination of mechanical properties and predicting the behavior of knitted fabrics during the manufacturing process and finally in the use is an important part of textile science. In this study the influence of knitted fabric anisotropy on the values of maximum force, corresponding extension and total work when axial tensile forces act on specimens cut at different angles with respect to the course direction of the knitted fabric were analyzed. A plain double weft knit fabric made of single cotton yarns was studied. For different angles of cutting samples, the curves of the relation between the values of the tensile forces and the extension at break were experimentally obtained. The mathematical models obtained were compared with the experimental results, and the corresponding correlation coefficients were calculated.

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Antimicrobial behavior, low-stress mechanical properties, and comfort of knitted fabrics made from poly (hydroxybutyrate-co-hydroxyvalerate)/polylactide acid filaments and cotton yarns

Textile Research Journal ◽

10.1177/00405175211035130 ◽

2021 ◽

pp. 004051752110351

Author(s):

Shirui Liu ◽

Linlin Ma ◽

Xujiao Ding ◽

Kelly C Wong ◽

Xiao-Ming Tao

Keyword(s):

Evaluation System ◽

Antimicrobial Properties ◽

Systematic Investigation ◽

Knitted Fabrics ◽

Textile Materials ◽

Blending Method ◽

Spun Yarns ◽

Cotton Yarns ◽

Polylactide Acid ◽

Low Stress Mechanical Properties

This article presents a systematic investigation of the knitted fabrics made from various blends of intrinsically antimicrobial poly (hydroxybutyrate-co-hydroxyvalerate)/polylactide acid filaments and cotton staple fibers. The effects of blend yarn, fabric structures, and distributions of fibers on antimicrobial properties of resultant yarns and knitted fabrics were studied. The relationships among fiber distribution, blend ratio, and anti-microbial properties were experimentally determined for three blend yarns made by sirofil, wrap-spun, and core-spun spinning technologies. The fabrics made from the sirofil-spun and wrap-spun yarns show better anti-microbial effects against Staphylococcus aureus, Klebsiella pneumoniae, and Candida albicans than those of the core-spun yarns, according to the standard AATCC100-2012 Antibacterial Finishes on Textile Materials (American Association of Textile Chemists and Colorists, 2012). An alternative blending method of co-knitting of the pure poly (hydroxybutyrate-co-hydroxyvalerate)/polylactide acid yarns and cotton yarns achieved excellent antimicrobial effects. Furthermore, a wearing trial of underwear made from the blended knitted fabrics was conducted in a nursing home. The wearing comfort of the garments, low-stress mechanical and surface properties of fabrics were evaluated objectively by the Kawabata Evaluation System of Fabric (KESF) system and subjectively by a questionnaire survey to users.

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Comprehensive study on mechanical properties of coated biaxial warp-knitted fabrics

Journal of Reinforced Plastics and Composites ◽

10.1177/07316844211020499 ◽

2021 ◽

pp. 073168442110204

Author(s):

Bin Yang ◽

Yingying Shang ◽

Zeliang Yu ◽

Minger Wu ◽

Youji Tao ◽

...

Keyword(s):

Mechanical Properties ◽

Failure Modes ◽

Least Squares Method ◽

Tensile Tests ◽

Tensile Creep ◽

Base Layer ◽

Sustained Load ◽

Uniaxial Tensile ◽

Membrane Structures ◽

Knitted Fabrics

In recent years, coated fabrics have become the major material used in membrane structures. Due to the special structure of base layer and mechanical properties, coated biaxial warp-knitted fabrics are increasingly applied in pneumatic structures. In this article, the mechanical properties of coated biaxial warp-knitted fabrics are investigated comprehensively. First, off-axial tensile tests are carried out in seven in-plane directions: 0°, 15°, 30°, 45°, 60°, 75°, and 90°. Based on the stress–strain relationship, tensile strengths are obtained and failure modes are studied. The adaptability of Tsai–Hill criterion is analyzed. Then, the uniaxial tensile creep test is performed under 24-h sustained load and the creep elongation is calculated. Besides, tearing strengths in warp and weft directions are obtained by tearing tests. Finally, the biaxial tensile tests under five different load ratios of 1:1, 2:1, 1:2, 1:0, and 0:1 are carried out, and the elastic constants and Poisson’s ratio are calculated using the least squares method based on linear orthotropic assumption. Moreover, biaxial specimens under four load ratios of 3:1, 1:3, 5:1, and 1:5 are further tensile tested to verify the adaptability of linear orthotropic model. These experimental data offer a deeper and comprehensive understanding of mechanical properties of coated biaxial warp-knitted fabrics and could be conveniently adopted in structural design.

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Electrospun nanofiber/cotton composite yarn with enhanced moisture management ability

Textile Research Journal ◽

10.1177/0040517520984978 ◽

2021 ◽

pp. 004051752098497

Author(s):

Ning Mao ◽

Xiaohong Qin ◽

Liming Wang ◽

Jianyong Yu

Keyword(s):

Water Transport ◽

Moisture Absorption ◽

Water Evaporation ◽

Electrospun Fibers ◽

Electrospun Nanofiber ◽

Knitted Fabrics ◽

Moisture Management ◽

Composite Yarn ◽

Management Ability ◽

Cotton Yarns

Wet comfort is a critical performance for fabrics, especially when human bodies release sweat in daily life. Despite excellent moisture absorption performance, cotton yarns are still limited in the moisture release/transfer ability. Here, based on a novel electrospinning technology, polyacrylonitrile and polystyrene (PS) electrospun nanofiber/cotton composite yarns were produced, respectively. Under fluorescence microscopic observation, electrospun fibers within the composite yarns showed a uniform distribution. As a result, these composite yarn-based knitted fabrics obtained a good water transport ability and a fast water evaporation rate. According to the moisture management test, PS electrospun nanofiber composite yarn-based fabrics exhibited a relatively high one-way transport index R (400%), claiming an enhanced moisture management performance. Finally, specific surface area tests and finite element analyses were used to analyze the water transport mechanism inside the yarns. The results proved that a small number of electrospun fibers played a predominant role in enhancing the moisture management ability of the composite yarns.

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