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Discover shibori : creative techniques in natural indigo dyeing
\"Dive in and learn 35 time-tested Shibori resist dyeing techniques, from making a natural indigo vat to more advanced folding, wrapping, and stitching techniques from around the world. In this book, crafters will master three natural indigo vats then show off their dyed fabrics in six stunning projects\"-- Provided by publisher.
BOOK
Physico-chemical Aspects of Textile Coloration
The production of textile materials comprises a very large and complex global industry that utilises a diverse range of fibre types and creates a variety of textile products. As the great majority of such products are coloured, predominantly using aqueous dyeing processes, the coloration of textiles is a large-scale global business in which complex procedures are used to apply different types of dye to the various types of textile material. The development of such dyeing processes is the result of substantial research activity, undertaken over many decades, into the physico-chemical aspects of dye adsorption and the establishment of 'dyeing theory', which seeks to describe the mechanism by which dyes interact with textile fibres.
Physico-Chemical Aspects of Textile Coloration provides a comprehensive treatment of the physical chemistry involved in the dyeing of the major types of natural, man-made and synthetic fibres with the principal types of dye. The book covers:
* fundamental aspects of the physical and chemical structure of both fibres and dyes, together with the structure and properties of water, in relation to dyeing;
* dyeing as an area of study as well as the terminology employed in dyeing technology and science;
* contemporary views of intermolecular forces and the nature of the interactions that can occur between dyes and fibres at a molecular level;
* fundamental principles involved in dyeing theory, as represented by the thermodynamics and kinetics of dye sorption;
* detailed accounts of the mechanism of dyeing that applies to cotton (and other cellulosic fibres), polyester, polyamide, wool, polyacrylonitrile and silk fibres;
* non-aqueous dyeing, as represented by the use of air, organic solvents and supercritical CO2 fluid as alternatives to water as application medium.
The up-to-date text is supported by a large number of tables, figures and illustrations as well as footnotes and widespread use of references to published work. The book is essential reading for students, teachers, researchers and professionals involved in textile coloration.
eBook
Thermodynamic and Kinetic Study on Eco-friendly Atmospheric Pressure Dyeing of Poly(Ethylene Terephthalate-co-Polyethylene Glycol) Fibers
This study investigated the dyeability of poly(ethylene terephthalate-
co
-polyethylene glycol) (PCP) fibers engineered for convenient disperse dyeing, using both low and high energy disperse dyes within a temperature range of 90–130 °C. A thermodynamic analysis revealed that the disperse dyeing of PCP fibers followed the Nernst isotherm. It displayed higher partition coefficients and equilibrium exhaustion than those of conventional PET fibers. The affinity parameter indicated a higher affinity of the disperse dyes for the PCP fibers, although the enthalpy and entropy variation indicated weaker dye embedding within the PCP polymer matrix. Kinetic studies revealed that dye exhaustion occurs more rapidly on PCP fibers at a temperature below the conventional disperse dyeing temperature for polyester (i.e., below 130 °C). In addition, the PCP fibers exhibited lower dyeing transition temperatures and higher diffusion coefficients at these reduced temperatures. Among the studied dyes, the low-molecular-weight disperse dye demonstrated more favorable thermodynamic and kinetic parameters than the high-molecular-weight disperse dye. Overall, these observations indicate that dyeing at 100 °C under atmospheric pressure is the optimal process condition for PCP fibers and is effective for both low- and high-molecular-weight dyes.
Journal Article
The art and science of natural dyes : principles, experiments, and results
\"This long-awaited guide serves as a tool to explain the general principles of natural dyeing, and to help dyers to become more accomplished at their craft through an increased understanding of the process. Photos of more than 450 samples demonstrate the results of actual dye tests, and detailed information covers every aspect of natural dyeing including theory, fibers, mordants, dyes, printing, organic indigo vats, finishing, and the evaluation of dye fastness. Special techniques of printing and discharging indigo are featured as well. The book is intended for dyers and printers who wish to more completely understand the \"why\" and the \"how,\" while ensuring safe and sustainable practices. Written by a textile engineer and chemist (Boutrup) and a textile artist and practitioner (Ellis), its detailed and tested recipes for every process, including charts and comparisons, make it the ideal resource for dyers with all levels of experience.\" -- Publisher's description
Book
Early evidence
In this article, we focus on the analysis of dyed textile fragments uncovered at an early Iron Age (11.sup.th -10.sup.th centuries BCE) copper smelting site during new excavations in the Timna Valley conducted by the Central Timna Valley (CTV) Project, as well as those found by the Arabah Expedition at the Hathor Temple (Site 200), dated to the Late Bronze/early Iron Ages (13.sup.th -11.sup.th centuries BCE). Analysis by HPLC-DAD identified two organic dyestuffs, Rubia tinctorum L. and indigotin, from a plant source (probably Isatis tinctoria L.). They are among the earliest plants known in the dyeing craft and cultivated primarily for this purpose. This study provides the earliest evidence of textiles dyed utilizing a chemical dyeing process based on an industrial dyeing plant from the Levant. Moreover, our results shed new light on the society operating the copper mines at the time, suggesting the existence of an elite that was interested in these high quality textiles and invested efforts in procuring them by long-distance trade.
Journal Article
Eco colour : botanical dyes for beautiful textiles
\"Dying with plants is a kind of botanical alchemy, and in Eco Colour, artistic dyer and colorist India Flint teaches you how to cull and use leaves, roots, and flowers to color your cloth and yarn. From whole-dyed cloth and applied color to prints and layered dye techniques, India describes only ecologically sustainable plant-dye methods using renewable resources and takes the path of doing the least possible harm to the dyer, the end user of the object, and the environment. Recipes include a number of entirely new processes developed by India herself, as well as guidelines for plant collection, directions for distillation of nontoxic mordants, and methodologies for applying plant dyes. Eco Colour inspires both the novice home dyer and textile professional seeking to extend their skills using India's successful methods for achieving ecologically friendly, stunning color.\"--Publisher description.
Book
Development of novel and sustainable ozone based dyeing processes for cotton fabric
Textile industry uses large quantities of different dyes to fulfill the rapidly growing demand for the dyed textile products, resulting in more dye consumption, greater dye discharge as textile dyeing effluent, and higher cost. To decrease the dyes consumption, this research evaluates the performance of novel ozone-based dyeing processes for cotton fabric. So far, reported ozone-based processes for textile involve the usage of high ozone intensity for removing impurities, discoloration of solution, color fading in denim and other fabrics. This research is a first effort, which concentrates on the performance enhancement of the exhaust dyeing process for cotton fabrics through the application of controlled and lower amount of ozone. In this research, ozone dosage is controlled through ozone generator knob to only 0.5 g/h (10%), 1 g/h (20%), 1.5 g/h (30%), 2 g/h (40%), and 2.5 g/h (50%). In contrast, ozone dosage reaches up to 60 g/h in cotton bleaching. This research evaluates the four ozone-based dyeing processes for cotton fabrics using two primary reactive dyes and two primary direct dyes under different concentrations of ozone. Effect of ozonation was evaluated for both direct and reactive dyes at four stages, namely during dyeing, dry ozonation before dyeing, pre-wet ozonation before dyeing, and ozonation after dyeing. Results showed that K/S value of the optimized ozone-based processes was better than the conventional exhaust process. For instance, K/S value for benchmarked conventional dyed sample was 2.147 for reactive yellow, and it was 3.271 (33.5% higher) for the “ozonation after dyeing” process. Similar trends were observed for many other trials, resulting in higher K/S value. In addition, the fastness properties of the optimized processes were comparable with the conventional exhaust process. FTIR and SEM analysis were also performed on selective ozone dyed fabrics.
Journal Article
The handbook of natural plant dyes : personalize your craft with organic colors from acorns, backberries, coffee, and other everyday ingredients
Through step-by-step instructions and color-saturated photographs, textile designer Sasha Duerr explains the basics of making and using natural plant dye, from gathering materials and making the dyes to simple ideas for how to use them. --from publisher description
Book
Novel, sustainable and water efficient nano bubble dyeing of cotton fabric
Textile is one of the basic human needs and almost all the textile fabrics are colored. Unfortunately, the extensive amounts of clean water, petrochemical based dyes, and chemicals are used for textile dyeing. After dyeing, these substances are discharged as pollutants. The disposal of this discharge is a serious issue which pollutes the natural environment. Therefore, there is a dire need to develop the novel dyeing processes with extremely low consumptions of water, dyes and chemicals. Nevertheless, the technologies with the low liquor ratios bring several challenges such as uneven dyeing, poor fastness, limited colors, lack of skills, and complicated processes. To address such challenges, this research achieves the extremely low liquor ratio of 1:1 using nano bubble technology. For the first time, this research describes novel, sustainable, and water efficient nano bubble dyeing of cotton with 11 different reactive dyes. The fabric dyeing performance properties of shade depth, dry rubbing fastness, wet rubbing fastness, and washing fastness were assessed for the liquor ratio of 1:1. The performance of 1:1 dyeing was compared with the conventional dyeing having liquor ratios of 1:5 and 1:10 for the same dyes. All the 11 reactive dyes, dyed at liquor ratio of 1:1 exhibited the uniform dyeing, acceptable fastness properties, and superior air permeability along with zero liquid discharge in the main dyeing cycle. Therefore, this research confirms the effectiveness of the newly developed dyeing process at extremely low liquor ratio of 1:1 for reactive cotton dyeing with significant saving of water, energy, dyes, chemicals and effluent load.
Journal Article