Paniz Khosravani, Nazanin Ezazshahabi and Masoud Latifi
This paper aims to study the optical properties of woven fabrics.
Abstract
Purpose
This paper aims to study the optical properties of woven fabrics.
Design/methodology/approach
The current study was carried out to objectively evaluate the luster of a group of woven fabrics with different weave structures and weft densities, with the aid of a goniophotometer. The results obtained from the objective luster measurement were validated by a set of pair comparison subjective tests using Thurstone’s law of comparative judgment.
Findings
The proper correlation with the R2 value of more than 0.96, between subjective and objective tests, confirmed the reliability and accordance of objective results with the human perception of luster. Statistical analysis of the luster results clarified that the effect of fabric structural parameters such as weave structure and weft density are significant at the confidence range of 95 per cent. The highest luster index was achieved for the twill 3/1 weave structure and the lowest luster belonged to the plain pattern. In addition, an increase in the density of the fabric leads to better luster. Moreover, it was concluded that the surface roughness affects the luster. A rise in the roughness value of the woven fabric causes reduction in its luster property.
Originality/value
Optical properties of woven fabrics, which are mainly attributed through the measurement of luster, are important for qualifying the aesthetic characteristics of the fabrics with various weave structures. Bearing in mind the influence of fabric surface properties on the aesthetic features of cloths, obtaining information in this field is a guide for selecting the suitable fabric for various end uses.
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Ali Kazemi, Seyedeh Fatemeh Ghasempour Ganji, Abdullah Na’ami and Masoume Latifi Benmaran
This study explores the effects of competitive intensity and innovation orientation on export outcomes, including export entrepreneurship (EE) and export performance (EP), and…
Abstract
Purpose
This study explores the effects of competitive intensity and innovation orientation on export outcomes, including export entrepreneurship (EE) and export performance (EP), and determines the direct and moderating impact of corporate social responsibility (CSR) among exporting agricultural and food (agri-food) small and medium-sized enterprises (SMEs) in Iran.
Design/methodology/approach
Using systematic random sampling, 296 firms participating in the international food and agricultural industries exhibition filled out a questionnaire. Smart PLS3 software was used to analyze the data.
Findings
The competitive intensity has positive effects on export entrepreneurship of Iranian agri-food SMEs. Additionally, innovation orientation, CSR and EE positively impact EP. However, the moderating impact of CSR on the relationship between innovation orientation and EP was not supported by data.
Originality/value
The current study enriches the existing knowledge in international business in the specific setting of exporting agri-food SMEs operating in a developing economy.
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Palani Rajan T., Prakash C. and Ramakrishnan G.
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…
Abstract
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.
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Imen Belhaj Ammar and Khaled Tamzini
Digitalization is considered an emerging phenomenon that enables businesses to develop new markets and business models. It helps firms expand the scope of their activities and…
Abstract
Digitalization is considered an emerging phenomenon that enables businesses to develop new markets and business models. It helps firms expand the scope of their activities and enables organizations to become more efficient. It is now a reality for firms and contributes to their value creation. Thus, the aim of this paper is to investigate the relationship between digitalization and firm performance through the mediating role of business model innovation (BMI) and to do so, a self-administered questionnaire with a sample of 70 Tunisian firms was conducted for this purpose. The main result of the analysis, confirms that digitalization is positively related to business performance, with BMI mediating this relationship.
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Gabriela Maestri, Claudia Merlini, Leonardo Mejia and Fernanda Steffens
This study aims to develop two piezoelectric textile devices formed from different weft knitted fabric rapports (Jersey and Pique) to be applied in the renewable energy’s (RE…
Abstract
Purpose
This study aims to develop two piezoelectric textile devices formed from different weft knitted fabric rapports (Jersey and Pique) to be applied in the renewable energy’s (RE) area.
Design/methodology/approach
Two different weft knitted rapports were produced with polyester (PES). The device developed has five layers: a central of poly(vinylidene fluoride) (PVDF) nonwoven, involved by two insulating layers of PES knitted fabric; and two conductive external layers, made of polypyrrole-coated PES knitted fabric. The piezoelectric textile devices were joined by sewing the five layers of the device.
Findings
The FTIR technique confirmed the β-phase in the PVDF nonwoven. This study produced and tested two different textiles devices with piezoelectric behavior, confirmed by the correlated pattern of voltage and tensile stress difference curves, showing the potential application in RE’s and sustainable energies field as smart textiles, such as devices incorporated in garments in the areas of high movement (elbow, knee, foot, fingers and hands, among others), and as an energy generator device
Originality/value
Textile materials with piezoelectric properties promise to advance RE’s developments due to their high material flexibility and sensitivity to the electrical response. The knitted fabric technology presents flexibility due to its construction process. Comparative studies analyzing the electrical response between knitted and woven fabrics have already been realized. However, there is a gap in terms of research scientific research regarding the comparison of the piezoelectric effect in a material that presents different knitted fabric rapports.
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Luiz Philipi Calegari, Barkokebas R.D. and Diego Castro Fettermann
The evolution of e-health technologies presents promising alternatives for health-care excellence. Despite the benefits arising from mobile e-health (m-health) and wearables…
Abstract
Purpose
The evolution of e-health technologies presents promising alternatives for health-care excellence. Despite the benefits arising from mobile e-health (m-health) and wearables technologies, the literature stands many contradictories signs regarding how users accept and engage in using these technologies. This study aims to synthesize the estimations about m-health user acceptance technologies.
Design/methodology/approach
A meta-analytic structural equation modeling was carried out using the 778 relationships estimated by 100 previous research. The estimations follow the relations and constructs proposed in the UTAUT2 technological acceptance model.
Findings
The results indicate the performance expectancy, effort expectancy, social influence and habit constructs are most important for predicting the behavioral intention of use of m-health technologies. The Latin American users of e-health technologies are still underestimated in the literature.
Originality/value
The study presents a guide to understanding the acceptance process of m-health technologies and delivers a general orientation for developing new m-health devices considering their acceptance by users.
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S. Shaikhzadeh Najar, E. Hezavehi, Sh. Hoseini Hashemi and A. Rashidi
The purpose of this paper is to describe a unique approach to investigate the wrinkle force of textile structures in a cylindrical model.
Abstract
Purpose
The purpose of this paper is to describe a unique approach to investigate the wrinkle force of textile structures in a cylindrical model.
Design/methodology/approach
In this research, an apparatus was designed and constructed in order to investigate the torsional and wrinkle behavior of textile structures in a cylindrical model under a different rotational level using data acquisition and micro‐controller systems.
Findings
In the light of research results, the fiber and fabric type, fabric physical and mechanical properties and imposed rotational level significantly contributed to wrinkle characteristics of worsted fabrics. It was noticed that with increase of rotational level, the wrinkle force, and energy increased along weft and warp directions. Wrinkle characteristics along warp direction exhibited greater values than in weft direction.
Originality/value
The study is aimed at determining wrinkle behavior of worsted fabrics under the combined influences of compression and torsional strains.
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Reyhaneh Kamali, Yasaman Mesbah and Fatemeh Mousazadegan
The aim of the present study is to consider the influence of the tensile behavior of fabric and sewing thread on the seam appearance.
Abstract
Purpose
The aim of the present study is to consider the influence of the tensile behavior of fabric and sewing thread on the seam appearance.
Design/methodology/approach
In this study, the formation of seam puckering on two elastic and normal woven fabrics was explored. In order to prepare samples, various sewing threads were applied. Test specimens were sewn under five different thread tension levels. Then the appearance of samples was evaluated subjectively to determine their seam puckering grade before and after the laundering process.
Findings
The obtained outcomes of this study present that although sewing thread tension increment decreases the seam pucker ranking in the similar sewing condition, elastic fabrics have a greater seam pucker grade compared to the normal fabric due to the fabric extension and contraction during sewing and after sewing process, respectively. In addition, the elastic strain of the sewing thread is the key factor that determined sewing thread's tendency to make seam puckering. Moreover, the laundry process due to the relaxation of the sewing thread decreases the seam pucker grade.
Originality/value
The consistency of the tensile property of fabric and sewing thread is a crucial parameter in improving the seam appearance and obtaining a smooth seam.
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Emadaldin Hezavehi, Saeed Shaikhzadeh Najar, P. Zolgharnein and Hamed Yahya
The purpose of this paper is to analyze the stress‐relaxation behavior of different woven fabrics under constant torsional strain in a wrinkled state. For this purpose, a new…
Abstract
Purpose
The purpose of this paper is to analyze the stress‐relaxation behavior of different woven fabrics under constant torsional strain in a wrinkled state. For this purpose, a new method for determination of stress‐relaxation behavior of the fabric was used while keeping the torsional strain constant.
Design/methodology/approach
In this study, the behavior of stress relaxation of fabric is examined with modification of wrinkle force tester sophisticated electro‐mechanical method and fabricating a device which uses a computer and micro controller, with constant torsional strain by a rotational level of 9.1 turn/m in 280°, and in 300 s.
Findings
The results depict that stress‐relaxation percentage in fabric in weft alignment is more than warp alignment and the fabrics which tolerate more torsional force, possess less stress‐relaxation percentages. In this way, with increasing polyester percentage in fabric the scale of stress‐relaxation percentage decreases. Also, adoption of data derived from experiments with Maxwell model shows that the interlaced model is a suitable model for explaining the stress relaxation decline in fabric. Correlation coefficient of fabrics in weft alignment with Maxwell model is more than warp alignment.
Practical implications
This study has practical implications in the clothing as well as in technical textiles areas.
Originality/value
Knowing visco‐elastic properties is very important. However, there is no information available to study the stress relaxation of woven fabrics under the combined influences of compression and constant torsional strains.
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A. Shams-Nateri, S.H. Amirshahi and M. Latifi
This paper presents a study of color behavior and reflectance factors of fibers in their crosssectional and longitudinal directions. In the practical field, it was demonstrated…
Abstract
This paper presents a study of color behavior and reflectance factors of fibers in their crosssectional and longitudinal directions. In the practical field, it was demonstrated that the reflectance factors and the lightness (L*) of fibers are different in their cross-sectional and longitudinal directions and the mentioned values are higher for the lateral surface. The measurement of reflectance factors of fibers' cross-sections showed that lightness and reflectance factors increase as fibers’ density increase in the measurement cell. A relationship was established between colors of fibers in two directions using the ratio of K/S values of yarns in cross-sectional and the longitudinal directions at different wavelengths. In the second part of this work a neural network was applied to relate the color of fibers in the mentioned directions. Results showed an excellent prediction with the later technique.