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- Kumar, Vijay, 1989-, et al.
(author)
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Contribution of traceability towards attaining sustainability in the textile sector
- 2017
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In: Textiles and Clothing Sustainability. - : Springer Science and Business Media LLC. - 2197-9936. ; 3:5
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Journal article (peer-reviewed)abstract
- Sustainability is a widely recognized concern and priority for healthy growth of the society and for preservation of the planet. Concerning this, textile sector has seen an unprecedented demand for sustainable products from the consumers, responding to which organizations have undertaken different initiatives. One of the major concerns in the textile sector is its complex supply chain networks and the involvement of numerous actors dealing with diverse raw materials and operations. The effective implementation of sustainability at the industrial scale would require the participation of all supply chain actors, along with an efficient traceability system to monitor and analyze different sustainability aspects. Furthermore, traceability is an integral part of the recycling process which contributes towards the sustainability. Therefore, the present article focuses on the contribution of traceable information towards attaining the sustainability in the textile sector. The three pillars of sustainability, namely, ecological, societal, and economic, are discussed for their relation and dependency on the traceability followed by an overview of the challenges in successful implementation of the traceability system, which is anticipated to shape the future research questions.
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| 3. |
- Tadesse, Melkie Getnet, 1984-, et al.
(author)
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3D Printing of NinjaFlex Filament onto PEDOT:PSS-CoatedTextile Fabrics for Electroluminescence Applications
- 2017
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In: Journal of Electronic Materials. - : Springer. - 0361-5235 .- 1543-186X. ; 47:3, s. 2082-2092
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Journal article (peer-reviewed)abstract
- Electroluminescence (EL) is the property of a semiconductor material pertaining to emitting light in response to an electrical current or a strong electric field. The purpose of this paper is to develop a flexible and lightweight EL device. Thermogravimetric analysis (TGA) measurement was taken to observe the thermal degradation behavior of NinjaFlex. Poly (3, 4-ethylenedioxythiophene): poly (styrene sulfonic acid) (PEDOT:PSS) with ethylene glycol (EG) was coated onto polyester fabric where NinjaFlex was placed onto the coated fabric using three-dimensional (3D) printing and phosphor paste and BendLay filament were coated 3D-printed subsequently. Adhesion strength and flexibility of the 3D-printed NinjaFlex on textile fabrics were investigated. The TGA results of the NinjaFlex depicts that no weight loss was observed up to 150°C. Highly conductive with a surface resistance value of 8.5 ohms/sq., and uniform surface appearance of coated fabric were obtained as measured and observed by using four-probe and scanning electron microscopy (SEM), respectively at 60% PEDOT:PSS. The results of the adhesion test showed that peel strengths of 4160, 3840 N/m were recorded for polyester and cotton specimens, respectively. No weight loss was recorded following three washing cycles of NinjaFlex. The bending lengths were increased by only a factor of 0.082 and 0.577 for polyester and cotton samples at 0.1 mm thickness, respectively; which remains sufficiently flexible to be integrated into textiles. The prototype device emitted light with a 12 V alternating current (AC) power supply.
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| 4. |
- Tadesse, Melkie Getnet, 1984-, et al.
(author)
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Electromechanical properties of polyamide/lycra fabric treated with PEDOT:PSS
- 2017
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In: Electromechanical properties of polyamide/lycra fabric treated with PEDOT:PSS. - : Institute of Physics (IOP). ; 254:7
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Conference paper (peer-reviewed)abstract
- One of the challenges in smart textiles is to develop suitable multifunctional materials that can address simultaneously several characteristics such as durability, stretchability, lightweight, and conductivity. Conductive polymers which showed success in different technological fields like polymer solar cells and light emitting diodes are promising in many smart textile applications. In this work, we treated a common polyamide/lycra knitted fabric with PEDOT:PSS for stretchable e-textiles. PEDOT:PSS, with DMSO as a conductivity enhancer and different ratios of water-based polyurethane dispersions as a binder, was applied to the fabric with simple immersion and coating applications. The effect of different application methods and binder ratio on the surface resistance of the fabric was monitored with four point probe electrical surface resistance measurement systems. Samples prepared by immersion technique are more uniform and have higher conductivity than those prepared by a coating technique. SEM images showed that PEDOT:PSS is incorporated into the structure in the immersion method while in the coating it is majorly present on the surface of the fabric. The tensile measurement showed that the acidic PEDOT:PSS and polyurethane dispersion coating has no adverse effect on the tensile strength of the fabric. The coated samples can be stretched up to 700% while still reasonably conductive. The resistance increases only by a small amount when samples were stretched cyclically by stretching 100%. Generally, samples prepared by the immersion method maintained better conductivity while stretching than those by a coating method. The washing fastness of the samples was also assessed.
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| 5. |
- Tadesse, Melkie Getnet, 1984-, et al.
(author)
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SUBJECTIVE EVALUATION OF FUNCTIONAL TEXTILE FABRICS
- 2017
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Conference paper (peer-reviewed)abstract
- Research in functional and smart textiles often focuses on technological and scientific challenges, or on the interaction with the wearer in a technological sense, but smaller extent on the interaction of these fabrics with the wearer in terms of tactile sensations. This research focuses on the subjective evaluation of the smart and functional textile fabrics as well as the objective evaluation using Kawabata Evaluation System (KES). A collection of the smart and functional textiles was developed and collected using various state of the art technologies such as 3D printing, inkjet printing, screen printing, and incorporation of smart fibers with knitting. The contact mechanics of these fabrics will be evaluated by subjective hand evaluation to study smart and functional textile fabric sensory properties such smoothness, roughness, softness, prickliness, stretchability, fluffy, sticky, sliding, and other behaviors of the smart fabric when touched with parts of the human finger. Equations will be developed to relate the subjective and objective measurements of the smart textile fabrics. The subjective hand values will be compared further with mechanical properties of the smart fabric such as tensile, bending, shear, compression, and surface friction which will be measured using KES.
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