Bibliographies thématiques / Halochromic textile

Littérature scientifique sur le sujet « Halochromic textile »

Auteur : Grafiati

Publié le 14 mars 2023

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Articles de revues sur le sujet "Halochromic textile"

Van der Schueren, Lien, et Karen de Clerck. « Halochromic Textile Materials as Innovative pH-Sensors ». Advances in Science and Technology 80 (septembre 2012) : 47–52. http://dx.doi.org/10.4028/www.scientific.net/ast.80.47.

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Recently, an increasing interest in pH-sensitive textiles is recognized. These chromic textiles can be used as flexible sensors for various applications. The aim of the current research is to develop textile pH-sensors through the application of pH-sensitive dyes on various textile materials using different techniques. The results of our study show that halochromic dyes can be incorporated into conventional textiles by a conventional dyeing technique. Also coating the fabrics with a sol-gel layer containing the halochromic dye proved to be successful. The majority of these developed materials showed a clearly visible color change with a pH-variation. The response of the sensors was dependent on the density of the fabric but was generally relatively fast, especially for the sol-gel treated fabrics. The halochromic coloration of nanofibres was realized by directly adding the dyes during the fiber formation, which was shown to be highly effective. Again, a clear halochromic shift was observed. The response of these sensors was fast thanks to the high porosity of nanofibrous non-wovens. Yet, it should be kept in mind that the halochromic behavior of the dyes in the textile matrix altered compared to their behavior in solution which is most likely attributed to dye-fiber interactions. Generally we can conclude that various coloration techniques showed to be effective for the development of innovative textile pH-sensors.

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Trovato, Valentina, Silvia Sfameni, Giulia Rando, Giuseppe Rosace, Sebania Libertino, Ada Ferri et Maria Rosaria Plutino. « A Review of Stimuli-Responsive Smart Materials for Wearable Technology in Healthcare : Retrospective, Perspective, and Prospective ». Molecules 27, n^o 17 (5 septembre 2022) : 5709. http://dx.doi.org/10.3390/molecules27175709.

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In recent years thanks to the Internet of Things (IoT), the demand for the development of miniaturized and wearable sensors has skyrocketed. Among them, novel sensors for wearable medical devices are mostly needed. The aim of this review is to summarize the advancements in this field from current points of view, focusing on sensors embedded into textile fabrics. Indeed, they are portable, lightweight, and the best candidates for monitoring biometric parameters. The possibility of integrating chemical sensors into textiles has opened new markets in smart clothing. Many examples of these systems are represented by color-changing materials due to their capability of altering optical properties, including absorption, reflectance, and scattering, in response to different external stimuli (temperature, humidity, pH, or chemicals). With the goal of smart health monitoring, nanosized sol–gel precursors, bringing coupling agents into their chemical structure, were used to modify halochromic dyestuffs, both minimizing leaching from the treated surfaces and increasing photostability for the development of stimuli-responsive sensors. The literature about the sensing properties of functionalized halochromic azo dyestuffs applied to textile fabrics is reviewed to understand their potential for achieving remote monitoring of health parameters. Finally, challenges and future perspectives are discussed to envisage the developed strategies for the next generation of functionalized halochromic dyestuffs with biocompatible and real-time stimuli-responsive capabilities.

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Rahman, Mustafijur, Mohammad Abbas Uddin, Md Moynul Hassan Shibly, Nusrat Binta Hossain, Mohammad Forhad Hossain et Muriel Rigout. « Synthesis and Characterisation of Azo-Based Dichlorotriazine Reactive Dye with Halochromic Behaviour ». TEKSTILEC 64, n^o 3 (26 octobre 2021) : 247–59. http://dx.doi.org/10.14502/tekstilec2021.64.247-259.

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Halochromism or pH sensitivity has tremendous potential for applications in various textile fields, such as protective clothing, wound dressings, etc. Reactive dye is mostly used to colour cotton or other regenerated cellulose fibres due to its better fastness and wide range of hue, from vivid to dull shades. In this research work, an azo-based dichlorotriazine reactive dye was synthesised from H-acid (4-amino-5-hydroxy-2,7-naphthalen¬edisulfonic acid) and 4-nitroaniline, which incorporates a halochromic behaviour. The change of colour of this dye was evaluated both in the the solution stage and coloured fabric stage in various pH solutions. A visible change of colour with the alteration of pH was observed after dyeing textile fabric with the synthesised dye. However, a significant difference was observed in a few cases with regard to the change of colour with the alteration of pH in the solution stage and coloured fabric stage. The dyed fabric also displayed very good to excellent wash fastness properties. Generally, the reactive dye synthesised in this research demonstrated an obvious change of colour with the alteration of the pH level.

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Park, Young Ki, Hyun Ju Oh, Jong Hyuk Bae, Jee Young Lim, Hee Dong Lee, Seok Il Hong, Hyun Sik Son, Jong H. Kim, Seung Ju Lim et Woosung Lee. « Colorimetric Textile Sensor for the Simultaneous Detection of NH3 and HCl Gases ». Polymers 12, n^o 11 (4 novembre 2020) : 2595. http://dx.doi.org/10.3390/polym12112595.

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For the immediate detection of strong gaseous alkalis and acids, colorimetric textile sensors based on halochromic dyes are highly valuable for monitoring gas leakages. To date, colorimetric textile sensors for dual-gas detection have usually been fabricated by electrospinning methods. Although nanofibrous sensors have excellent pH sensitivity, they are difficult to use commercially because of their low durability, low productivity, and high production costs. In this study, we introduce novel textile sensors with high pH sensitivity and durability via a facile and low-cost screen-printing method. To fabricate these textiles sensors, Dye 3 and RhYK dyes were both incorporated into a polyester fabric. The fabricated sensors exhibited high detection rates (<10 s) and distinctive color changes under alkaline or acidic conditions, even at low gas concentrations. Furthermore, the fabricated sensors showed an outstanding durability and reversibility after washing and drying and were confirmed to contain limited amounts of hazardous materials. Thus, our results show that the fabricated textile sensors could be used in safety apparel that changes its color in the presence of harmful gases.

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Trovato, Valentina, Alessio Mezzi, Marco Brucale, Hamed Abdeh, Dario Drommi, Giuseppe Rosace et Maria Rosaria Plutino. « Sol-Gel Assisted Immobilization of Alizarin Red S on Polyester Fabrics for Developing Stimuli-Responsive Wearable Sensors ». Polymers 14, n^o 14 (8 juillet 2022) : 2788. http://dx.doi.org/10.3390/polym14142788.

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In the field of stimuli-responsive materials, introducing a pH-sensitive dyestuff onto textile fabrics is a promising approach for the development of wearable sensors. In this paper, the alizarin red S dyestuff bonded with a sol-gel precursor, namely trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane, was used to functionalize polyethylene terephthalate fabrics, a semi-crystalline thermoplastic polyester largely used in the healthcare sector mainly due to its advantages, including mechanical strength, biocompatibility and resistance against abrasion and chemicals. The obtained hybrid halochromic silane-based coating on polyester fabrics was investigated with several chemical characterization techniques. Fourier transform infrared spectroscopy and X-ray Photoelectron Spectroscopy confirmed the immobilization of the dyestuff-based silane matrix onto polyethylene terephthalate samples through self-condensation of hydrolyzed silanols under the curing process. The reversibility and repeatability of pH-sensing properties of treated polyester fabrics in the pH range 2.0–8.0 were confirmed with diffuse reflectance and CIELAB color space characterizations. Polyester fabric functionalized with halochromic silane-based coating shows the durability of halochromic properties conversely to fabric treated with plain alizarin red S, thus highlighting the potentiality of the sol-gel approach in developing durable halochromic coating on synthetic substrates. The developed wearable pH-meter device could find applications as a non-invasive pH sensor for wellness and healthcare fields.

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Kusimo, Michael O., Henry Ukoha, Aderonke Oludare, Oluwatoyin Afolabi et Matthew Agwae. « Halochromic properties and antimicrobial potential of crude extracts from five species of ornamental plants ». UNED Research Journal 11, n^o 3 (1 décembre 2019) : 283–91. http://dx.doi.org/10.22458/urj.v11i3.2586.

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Introduction: the colours of flowers are a result of secondary metabolites that have long been used in the medical and textile industries, and those that are halochromic are used in colour display because they change color according to pH changes, but many species are yet to be studied in detail. Objective: to explore the halochromic properties and the antimicrobial potentials of the crude extracts of several ornamental plants. Methods: we used aqueous and organic solvents to extract pigments from petals of five fascinating flowers planted around International Institute of Tropical Agriculture station, Cotonou, Benin: Allamanda blanchetii, Cascabela thevetia, Eichhornia crassipes, Ixora casei and Thunbergia erecta, followed by an investigation into their halochromic properties. Antibacterial potentials of the extracts were tested on important rice pathogens: Xanthomonas oryzae pv. oryzae, and Pantoea agglomerans, which are gram-negative bacteria; and on Bacillus subtilis, a gram-positive bacterium. Results: The crude extracts of T. erecta and A. blanchetii have good halochromic properties within pH 2 – 12, exhibiting distinct colours. The chromophores of the C. thevetia, E. crassipes, and I. casei are not halochromic as the colours of the crude extracts remain the same at the pH range except pH 12 which is similar for the five extracts. Crude extracts of T. erecta inhibited growth of P. agglomerans without development of resistance, whereas the bacteria developed resistance against Penicillin after 18 hrs of incubation. T. erecta and A. blanchetii were able to inhibit growth of X. oryzae and both inhibited B. subtilis. Conclusion: Pigments from both T. erecta and A. blanchetii are good pH indicators; however, T. erecta is a better antibacterial agent than A. blanchetii because it has broad-spectrum activities against bacteria.

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Park, Young Ki, Byeong M. Oh, A. Ra Jo, Ji Hyeon Han, Jee Young Lim, Hyun Ju Oh, Seung Ju Lim, Jong H. Kim et Woo Sung Lee. « Fabrication of Colorimetric Textile Sensor Based on Rhodamine Dye for Acidic Gas Detection ». Polymers 12, n^o 2 (12 février 2020) : 431. http://dx.doi.org/10.3390/polym12020431.

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For the immediate detection of gaseous strong acids, it is advantageous to employ colorimetric textile sensors based on halochromic dyes. Thus, a rhodamine dye with superior pH sensitivity and high thermal stability was synthesized and incorporated in nylon 6 and polyester fabrics to fabricate textile sensors through dyeing and printing methods. The spectral properties and solubility of the dye were examined; sensitivity to acidic gas as well as durability and reversibility of the fabricated textile sensors were investigated. Both dyed and printed sensors exhibited a high reaction rate and distinctive color change under the acidic condition owing to the high pH sensitivity of the dye. In addition, both sensors have outstanding durability and reversibility after washing and drying.

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De Meyer, Thierry, Iline Steyaert, Karen Hemelsoet, Richard Hoogenboom, Veronique Van Speybroeck et Karen De Clerck. « Halochromic properties of sulfonphthaleine dyes in a textile environment : The influence of substituents ». Dyes and Pigments 124 (janvier 2016) : 249–57. http://dx.doi.org/10.1016/j.dyepig.2015.09.007.

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Kramar, Ana D., Tatjana R. Ilic-Tomic, Jelena M. Lađarević, Jasmina B. Nikodinovic-Runic et Mirjana M. Kostic. « Halochromic cellulose textile obtained via dyeing with biocolorant isolated from Streptomyces sp. strain NP4 ». Cellulose 28, n^o 13 (15 juillet 2021) : 8771–84. http://dx.doi.org/10.1007/s10570-021-04071-7.

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Lee, Junheon, Heejung Jun, Yasuhiro Kubota et Taekyeong Kim. « Synthesis of red fluorescent dye with acid gas sensitive optical properties and fabrication of a washable and wearable textile sensor ». Textile Research Journal 91, n^o 17-18 (16 février 2021) : 2036–52. http://dx.doi.org/10.1177/0040517521994496.

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Two halochromic red fluorescent dyes, whose chromophores are the same as Nile red, were synthesized by introducing dibutyl- and dihexyl-substituents for improving their affinity toward chemically resistant and hydrophobic fibers made of high molecular weight polyethylene. The optical properties of the two synthesized dyes (Dibutyl NR, Dihexyl NR) compared with Ethyl NR (Nile red), such as the maximum absorption, Stokes shift, molar absorption coefficient, and quantum yield, were almost the same. However, the most hydrophobic Dihexyl NR exhibited the best washability of the three dyes. It was shown that the change of both the color and the fluorescence emission properties can be achieved not only in a hydrochloric acid solution but also inside the polyethylenic fiber on exposure to the gaseous phase of hydrogen chloride even at very low concentrations. The sensing performance was maintained even after several repeats. The highly sensitive and visible fluorescent acid gas sensing textile sensor having washability and reusability was fabricated.

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Thèses sur le sujet "Halochromic textile"

ABATE, MOLLA TADESSE. « Supercritical CO2 technology in resource-effective production of functional and smart textiles ». Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2858353.

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