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2013, Journal of Materials Science and Chemical Engineering
In this study the existing process (3 steps) and proposed process (2 steps) were evaluated during dyeing of denim fabric with fluorescent dye. It compared the effectiveness of these two processes of fluorescent dyeing in the textile industry. Here at first the grey denim fabric was pretreated by scouring and bleaching. Then the fabric was dyed in existing process i.e. through catanizing, dyeing and binding at 10% and 15% shades. Again the pretreated fabric was dyed in proposed process i.e. through catanizing and (dyeing and binding) with same shades. Then the properties of two types of dyed fabric were compared. This study provides a set of experimental results, discussion and comparison between the two processes. The results show that the proposed process has less power and time consumption and more water savings compared to existing process. So the evaluation reflected that the proposed process was much more effective than existing process of denim dyeing with fluorescent dye.
International Journal of Textile Science
Process Modification of Denim Garments Dyeing with Fluorescent Dye2014 •
Tekstil Ve Konfeksiyon
An Investigation on Colour Analysis and Fastness Properties of the Denim Fabric Dyed with a Different Method2016 •
Denim, boyali cozgu ve atki ipliklerinin dokunmasi ile uretilen bir kumas turudur. Denim kumasin en onemli ozelligi indigo boyama ile elde edilen rengidir. Bu ozel gorunumun temel sebebi cozgu ipliklerinin boyandigi indigo adi verilen boyadir. Bu calismada indigo+sulfur boyamaya ilave bir boyama adimi eklenerek yenilikci bir uygulama yapilmistir. Temel amac ozgun renk gecisleri ve gorunumler elde etmektir. Yapilan calismada renk analizi ve haslik ozellikleri degerlendirilmistir
2014 •
The desire to colour textiles is as old as spinning and weaving. Natural dyes have been used since thousands of years for their long endurance, soft and elegant colours. But the invention of synthetic dyes has limited the application of natural dyes. The health hazards associated with the use of synthetic dyes and also the increased environmental awareness have revived the use of natural dyes during the recent years. The major performance characteristic of a dye is its ability to maintain the colour in normal use and is known as colorfastness. The study provides information regarding colourfastness properties of naturally dyed denim fabrics. Three vegetable materials were used for dyeing denim fabrics: Punica granatum (bark powder), Indigofera tinctoria (leave powder) and Juglans regia (walnut dried shells). The results of the study indicated that using Walnut shells and Punica granatum deeper and more stable shades of colors are obtained in comparison with Indigofera Tinctoria dyed...
Current Trends in Fashion Technology & Textile Engineering
Fundamentals of Natural Dyeing of Textiles: Pros and ConsEco-Friendly Textile Dyeing and Finishing
Textile Dyes: Dyeing Process and Environmental Impact2013 •
Europan journal of science and technology
The Effect of Blend, Mordant and Waste Ratio on Dyeing of Denim Products with Coffee Waste2023 •
Textile and Leather Review
Synthetic Dyes for Textile Colouration: Process, Factors and Environmental Impact2022 •
Dyes are substances that enhance the appearance of finished goods by providing uniform colour. Dyeing is the application process of dyes that are fixed in textile fibers. The dyeing process uses various steps, including pretreatment, desizing, scouring, bleaching, carbonizing, degumming, and mercerization. Water is considered the primary medium for applying dyes and other chemicals for this treatment in the dyeing process. The dyeing process contains many toxic chemicals, metals and non-soluble substances, such as wastewater, which is thrown into the environment. It is noted that, during dyeing , around 50-300 liters of water is required for 1 kg of fiber. On the other hand, 1-2 million liters of water are needed every day for 50,000 meters of daily production. This massive amount of toxic wastewater is highly harmful to the environment, human health, aquatic system, soil, air, water, plants, and animals. This review paper states various dyeing processes with different dyes, including acid dye, direct dye, sulfur dye, reactive dye, vat dye, metal complex dye, azo dye, disperse dye, and basic dye. In contrast, it also describes the influencing factors of dyeing processes and methods. Moreover, this review demonstrates the impacts of textile dyes on the environment (water, soil, air emissions, human health) and illustrates possible remedial actions regarding wastewater.
2020 •
Fluorescent dyed fabric is the term for a material that has high visibility colour. Fluorescent dyed fabric materials are used widely for various purposes like safety wear, sportswear, leisure wear, work wear and fire brigades etc. However using the fluorescent dye is toxic compared to the reactive and disperse dye. Here, we had chosen a pc blended fabric with different portion such as 60% polyester with 40% cotton and 40% polyester with 60% cotton. First we prepared the fluorescent dye and after that the pc blended knitted fabric was treated with the process of scouring and bleaching. After this process the fabric was dyed, the polyester can dyed with disperse dye and cotton was dyed with reactive dye. The prepared fluorescent dye applied on the pc blended fabric. At last pc blended fabric is dyed with reactive, disperse and fluorescent dye. Then we had then tested on various basis like tearing, bursting strength, abrasion resistance, air permeability, stiffness, washing fastness and rubbing fastness .This may help in the near future when people plan to use the pc blended knitted fabric. In future if the fluorescent effect were fade it would be used as normal dyed fabric because of reactive and disperse dye. Normally dyeing of polyester/cotton blended fabric is dyed in two steps. The cost of double bath dyeing is quite higher than the one step or single bath dyeing. The continuous dyeing technique of polyester/cotton blended fabric providing advantages of improvement in productivity with reduced dyes and auxiliary cost and reduce material handling with minimum process time. However, double bath dyeing of polyester/cotton blend fabric gives far better results in terms uniformity of shades in both light and dark shades, while in single bath dyeing shown poor fastness property for dark shades but good fastness property for light shades
Sustainability
Ecological Approaches to Textile Dyeing: A ReviewConventional dyeing processes currently practiced in the textile industry have a great environmental impact, mainly in relation to the quantity and pollution of water, use of toxic chemicals, atmospheric emissions, and high energy consumption. This study aims to discuss the relationship between the variables that involve conventional dyeing processes and environmental issues. It presents the mapping of the materials and emerging technologies for ecological coloration, specifically for the pretreatment and dyeing stages. Regarding pretreatment, it discusses biochemical (enzymes) and physical treatment (ultraviolet radiation, plasma, and ozone technology) approaches. With respect to the dyeing processes, it addresses ecological materials (natural dyes) and emerging technologies (such as plasma, supercritical CO2, AirDye®, ultrasonic, microwave, Nano-DyeTM, and electrochemical). Given the importance of ecological coloration, this study provides important reflections on the urgency of r...
The use of natural dyes for textile dyeing purpose decreased to a large extent after the discovery of synthetic dyes in 1856. As a result with a distinct lowering in synthetic dyestuff costs, the natural dyes were virtually neglected at the beginning of twentieth century presently there is an excessive use of synthetic dyes estimated at around 10,000,000.00 tons per annum, the production and application of which releases large amount of wastes and unfixed colorants to the environment thereby causing serious health hazards and disturbing the eco-balance of nature. Due to the current economic and environmental consciousness, research in this front should be titled towards the use of natural dyes for dyeing textile materials. This article gives an in depth review and analysis on the categories of textile materials suitable for dyeing with natural dyes, equipments for home and small scale commercial natural dyeing of textile, extraction and mordents used in dyeing textile with natural dyes, conventional and non-conventional method of natural dyeing of textile as well as colour fastness properties of natural dyes. This could help in explaining the merits associated with the use of natural dyes other than synthetic dyes in textile dyeing to overcome the challenges of using synthetic dyes in textile dyeing and as well portray the benefits of using natural dyes
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