Traditional Dyeing Research Articles

Potential trade-off between water consumption and water quality: life cycle assessment of nonaqueous solvent dyeing

Fashion industry consumes over 60% of global fibers and attracts increasing attentions due to its environmentally polluting supply chain. In addition to natural fibers cultivation, wet processes of textile manufacturing are also important contributors to water-related impacts due to their large freshwater consumption and the production of chemicals containing wastewater. Despite of efforts made in improving efficiency of water use and wastewater treatment in textile industry, innovative ‘water-free’ technologies, such as nonaqueous dyeing technology using organic solvent, have been developed and demonstrated to reduce water consumption significantly. However, the potential impact on water quality by organic solvents induced in supply chain of this emerging technology remains unassessed, posing an unknown risk of its promotion. Hence, in the present study, a comprehensive life cycle assessment is applied to evaluate its full environmental impacts, including those on ecosystem and human health caused by decamethylcyclopentasiloxane (D5) as the solvent used. Further, the nonaqueous dyeing system is compared with traditional aqueous dyeing technology from both environmental and economic perspectives. Results indicate that nonaqueous dyeing system is advanced in most of environment categories except for abiotic depletion potential (ADP) and Ecotoxicity. However, scenarios analysis reveal that these findings are influenced by the loss fraction of D5 during the solvent recovery process. It is suggested that the loss fraction should be controlled below 2% o.w.f. for the nonaqueous dyeing technology to be advanced throughout all environmental categories. Nonaqueous D5 dyeing could reduce water consumption by 61.30%-79.95% and greenhouse gas emissions by 43.70% compared to the traditional system, delivering a promising contribution to China's 2060 carbon neutrality ambition. Sensitivity and uncertainty analyses are also conducted to investigate the effects of the key parameters (incl. inventory data and USEtox model inputs) and demonstrate the robustness of our assessment.

Preparation of cationic viscose and its salt‐free dyeing using reactive dye

AbstractThe traditional dyeing process of reactive dyes requires a large amount of inorganic salts to accelerate the combination of dyes and textiles, which leads to substantially more water pollution. In this work, we used a quaternary ammonium‐type cationic modifier, 3‐chloro‐2‐hydroxypropyl trimethylammonium chloride (CHPTAC), to modify the viscose acetal fibre before the dyeing process. After the modification, reactive dyes were dyed without any inorganic salt. Then the fabric was finished with a commercial wet rubbing fastness enhancer, FM‐8, to improve the colour fastness. The modified viscose acetal fibre was characterised by Fourier Transform–infrared spectroscopy and scanning electron microscopy. The results showed that viscose acetal fibre was modified successfully by CHPTAC and that the physical structure did not noticeably change following the modification. The optimum process was determined by establishing the ideal amount of modifier and the modification temperature, as well as the concentrations of sodium hydroxide and soda ash. The results show that the most suitable parameters were 80 g/L for the modifier dosage, a modification temperature of 70°C, 20 g/L of sodium hydroxide and 10 g/L of soda ash. The wet rubbing fastness was grade 4‐5 after finishing and dyeing. The exhaustion percentage was significantly higher than that for traditional dyeing, and the K/S and dyeing uniformity were both higher than traditional salt dyeing.

Ethnobotanical study on plants used to dye traditional costumes by the Baiku Yao nationality of China

BackgroundThe Baiku Yao is a branch of the Yao nationality in China. The unique dying process of traditional clothing employed by these people has distinct national characteristics, a profound impact on the production and life of local people, and important research value. For this reason, it is important to investigate and document the dyeing plants and the traditional knowledge involved in the dyeing of Baku Yao traditional clothing.MethodologyInformation on dyeing plants was obtained using the free-list method and interviews with 61 Baiku Yao informants in Guangxi and Guizhou from January 2020 to August 2021. Based on the free-list method, we evaluated and screened out important plants by calculating the cognitive salience value of each plant.ResultsThe results showed that the people of Baiku Yao have accumulated rich traditional knowledge of dyeing plants and long-term dyeing and other processes. We collected 23 species and recorded the related traditional knowledge, such as the Baiku Yao name, life form, habitat, part(s) used, application type, usage, and area used. The utilization of dyeing plants has a strong relationship with ethnic culture. The Baiku Yao uses unique anti-dyeing material (Ailanthus vilmoriniana) in the cotton dyeing process, they call it “the mother tree”. As well as, the results also showed that 15 plants (65.2%) have medicinal value and can be used to treat 18 aliments, and wild plants play a very important role in the life of the Baiku Yao.ConclusionThese plants not only meet the color needs of the Baiku Yao people but also have health care effects, aligning with the trends toward green dyeing and the health contentiousness of modern people. This study provides a reference for the inheritance and development of Baiku Yao traditional clothing dyeing culture, will aid the identification of new natural, safe and healthy textile dyes, and is of positive significance in promoting regional economic development, national cultural inheritance, and biodiversity protection.

Ecological Dyeing Technology of Polyester Fabric Using Glycerol

Abstract Textile industry struggles with hazardous industrial effluents, water, and energy consumption for sustainability. In the present study, nontoxic glycerol was used as a dispersing agent with water in order to reduce the chemical consumption and eliminate the use of more water in polyester (polyethylene terephthalate [PET]) dyeing. Glycerol was added to dyeing bath at different concentrations, and disperse dyes were dispersed with using microwave radiation. PET fabric samples were dyed with glycerol using microwave radiation, and dyeing properties were compared with carrier dyeing method. After the dyeing process, spectrophotometric analysis, light, rubbing, and washing fastness of samples were analyzed. The experimental results show that glycerol is an ecological and organic substitution to carrier in PET dyeing. As a result, negative environmental impacts of the traditional PET dyeing method can be reduced using glycerol. Compared with traditional dyeing methods, dyeing with glycerol is a promising alternative for sustainability of the textile industry. Moreover, microwave radiation led to an increase in dye uptake, dyeing rate acceleration, energy, and time saving.

Iron-Manganese Bimetallic-Organic Framework as A Photocatalyst for Degradation of Rhodamine B Organic Dye Under Visible Light

In recent years, there have been many research works on use of different methods to treat textile dyeing wastewater such as mechanical, biological and chemical methods (using oxidizing agents, such as: H2O2, O3, and H2O2/O3). However, some traditional textile dyeing wastewater treatment methods such as mechanical and biological methods have limitations in treating these pollutants thoroughly. To enhance the treatment efficiency, the use of photocatalysts combination with strong oxidizing agents, such as H2O2, has been extensively developed in recent years. In this study, the iron-centred bimetallic organic framework Fe-MOF has been synthesized by partial replacement of Fe3+ ions with Mn metal ions by solvent-thermal method. The analytical methods used to evaluate the structural characterization of the as-synthesized materials including Scanning Electron Microscope (SEM), Brunaurer-Emmett-Teller (BET), X-ray Diffraction (XRD), Fourier Transform Infra Red (FT-IR), and UV-Vis Diffuse Reflectance Spectroscopy (DRS). The experiments on the decomposition of organic pigment Rhodamine B were performed under varying conditions of pH, catalyst mass and RhB colorant concentration. Experiments with different electron capturers indicate that h+ plays a major role in the photochemical degradation of RhB. The stability and durability of the 0.1 Mn/Fe-MOF catalyst were evaluated through the leaching and recycle experiments, showing that the RhB degradation efficiency of the photocatalyst decreased modestly after five repetitions. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Short clean dyeing of two-component cotton/polyamide fabrics through adaptive adjustment of the dye solution

Cotton/polyamide fabric is commonly colored separately using two kinds of dyes in the pad dyeing process, which leads to many shortcomings such as complex process flow, extensive usage of auxiliaries, high pollute on and so on. Based on the trait of reactive dye, a short-process clean pad dyeing for cotton/polyamide fabric just with reactive dye was developed in this paper. The system of self-adaptive adjustment of dye solution pH, which provided suitable color fixation conditions for cotton and polyamide, was developed to realize the short-process clean pad dyeing technology. The direct-steaming process after sample passing through padding mangle brought fabric with better color brightness compared with traditional drying-steaming procedure. The optimal concentration of dye and sodium trichloroacetic (TCA) were 25 g/L and 20 g/L, respectively. Initial pH value of dye liquor was 5, and the steaming time was recommended to be 25 min. The above conditions were determined to ensure less resource consumption and satisfactory color brightness. By calculation, the water consumption and production cost of dyeing 10 km length fabric (3 m width) could be reduced by about 67% and 28.9% respectively compared with the traditional process. This innovative dyeing technology solves the problems of traditional dyeing, such as high pollution and complicated process, and it provides a new way for cotton/polyamide fabric dyeing under the condition of friendly environment, less waste water and higher efficiency.

Dyeing of Jute Fabric by Eucalyptus Bark Extract

ABSTRACT Traditional dyeing procedures were used to color jute fabrics using a natural dye extracted from eucalyptus bark. A pre-mordanting method was followed to dye the jute fabric in the absence and presence of mordant. Alum, vinegar, copper sulfate (CuSO4), alum+CuSO4, vinegar+CuSO4, were used as mordants. Each of the dyed materials was examined in terms of color strength (K/S) and CIELab values. Dyed fabrics were tested for wash, rubbing (dry and wet), and light fastness values. Jute-dyed fabrics without mordants revealed a reddish-brown shade, whereas fabrics dyed with other mordants showed light brown to dark brown shades. Except for unmordanted fabrics that showed moderate to good wash fastness, all fabrics showed good colorfastness to washing. All fabrics showed excellent colorfastness under light and dry rubbing. Apart from the unmordanted fabrics, which had moderate to good wet rubbing fastness, the fabrics had good wet rubbing fastness.

Sustainable and eco-friendly strategies for polyester-cotton blends dyeing in supercritical CO2

Traditional water medium dyeing of polyester-cotton fabrics consumes more water and energy, and causes serious environmental pollution in comparison with one-bath dyeing of single component fiber. To achieve sustainable dyeing of polyester-cotton blends, three reactive disperse dyes with s-triazine reactive group were synthesized, and supercritical CO2 was used as solvent to conduct the waterless dyeing. The results showed that one-bath dyeing of polyester-cotton blends could be successfully realized with the synthesized dyes. Dyeing performance of the synthesized dyes was constantly improved with the extension of carbon chain on aniline. Compared with other two dyes, the optimal color strength of polyester-cotton blends was obtained with dye 3 using dimethylsulfoxide as co-solvent, and K/S values up to 6.4 were obtained at 100 °C, 20 MPa and 120 min with a dimethylsulfoxide concentration of 80 %. σK/S values below 0.14 and washing and rubbing fastness above 4 were displayed for the colored samples. In addition, dyeing mechanism of polyester-cotton fabrics with the synthesized dyes was discussed combined with FT-IR measurement and stripping experiments.

The Use of Disperse Dyes for Dyeing of Recycled Polyethylene Terephthalate Fibres

Recycled polyethylene terephthalate (r-PET) is a widely recycled plastic employed for new textile production in the world. It reduces environmental impact and lowers cost of the production. For the traditional dyeing of polyethylene terephthalate (PET), commercial disperse dyes are generally used. In presented research the recycled r-PET fibres 6 den dyeing with disperse dyes Itosperse: Red, Blue and Yellow (concentration 3 Wt. %) were examined and the influence of the intensifier of a salicylic acid (with concentration of 4 - 10 g/L) in dye bath was investigated. The colour properties of dyed samples and colour fastness to washing were tested. It is concluded that the presence of the intensifier of salicylic acid improves dyeing results, but the optimal concentration differs for each dye. Colour fastness test to washing of the blue dyed samples showed the insignificant changes of colour parameters. In some cases the change of shade in presence of salicylic acid was observed.

Structural Coloration of Polyester Fabrics with High Colorfastness by Copolymer Photonic Crystals Containing Reactive Epoxy Groups.

Structural color as a revolutionary coloration strategy has been proposed to replace the traditional dyeing and printing process. However, the poor colorfastness and easy crack formation of structural colors on textile fabrics restrict their practical application at present. In this study, poly (tert-butyl acrylate-co-glycidyl methacrylate) (P(t-BA-co-GMA)) copolymers containing reactive epoxy groups with different mass ratios of tert-butyl acrylate (t-BA) and glycidyl methacrylate (GMA) were successfully synthesized, which were used to create structural colors on black polyester fabrics. The results showed that P(t-BA-co-GMA) nanospheres could form crack-free structural colors on polyester fabrics, and the colors vary with the mass ratio of t-BA and GMA to obtain five different colors. The different particle sizes of the different P(t-BA-co-GMA) nanospheres with different refractive indexes and the arrangement of short-range ordered and long-range disordered in microstructures may be the reason of different angle-independent structural colors on polyester fabrics. The P(t-BA-co-GMA) nanosphere structural colors on polyester fabrics possess good abrasion and washing colorfastness. This research provides the experimental basis for the development of crack-free amorphous photonic crystal structural color on fabrics with high colorfastness to promote the practical application of structural color in textile coloration.

Optimized soft frame design of traditional printing and dyeing process in Xiangxi based on pattern mining and edge-driven scene understanding

Traditional folk crafts are handicrafts and corresponding activities created by Chinese working people in all ages to meet their material and spiritual needs by using various material materials and handicrafts. It reflects the general characteristics of arts and crafts, but also shows the distinctive personality of national culture. The folk printing and dyeing process of Miao Nationality in Xiangxi and Southeast Guizhou has this characteristic, which once brought a lot of convenience to people's life and became an important part of people's life at that time. Traditional art carries a lot of spiritual things in its material form, so it has high esthetic value, cultural value and profound spiritual connotation. Therefore, the optimization design of traditional printing and dyeing process framework in Xiangxi is worth studying. In this paper, through using big data pattern mining algorithm and scene understanding algorithm, a framework optimization system of traditional printing and dyeing process in Xiangxi is constructed, for the optimization of the traditional model, the edge-driven scene model is applied for the systematic study. The designed model is simulated through the testing on different data sets. Reflecting from the experimental result, we can conclude that the proposed model is efficient.

Discoloration and Degradation of Bamboo under Ultraviolet Radiation

Light is one of the most adverse factors for bamboo deterioration and causes surface degradation and discoloration. The study was carried out to initiate efficient and effective photodiscoloration to modify and enrich bamboo colors that may be applied to bamboo dyeing. Different types of bamboo samples commonly used in the industry were studied experimentally under two types of ultraviolet (UV) light. Effects of light sources, radiation time, and distances on discoloration and discoloration mechanism were systematically studied. For both UV 313 and high-pressure mercury light, the bamboo surface turned red-yellow, and color parameters including Δ E , Δ a , Δ b , and C rapidly increased first and then stabilized for long time, while Δ L showed a similar trend, except for the final decrease. Compared with UV 313, high-pressure mercury lamp light was highly efficient and took less time to induce discoloration. Heat treatments darkened the bamboo color and slowed down photodiscoloration, and the higher temperature led to more photostability. The color change of bamboo scrimber under UV radiation was less and slower than that of untreated bamboo due to high density and heat treatment, and the dark carbonized scrimber changed less than that of the light carbonized scrimber. Relatively high contents of isovanillin, syringaldehyde, β-hydroxypropiovanillone, p-hydroxybenzaldehyde, and syringic acid were identified by GC-MS, and syringaldehyde, 2,6-dimethylbenzoquinone, and 3-hydroxy-4-methoxybenzoic acid were identified by HPLC-MS from a bamboo discoloration layer after high-pressure mercury lamp radiation. These products all contained a conjugated double bond and were conjectured to be degraded from lignin or aromatic extracts. Particularly, 2,6-dimethylbenzoquinone which contained a cyclohexenedione structure without benzene rings, was more chemically stable than other conjugated double bonds with benzene rings, and was supposed to be the final product (chromogenic group) during bamboo photodegradation. Untreated or light-colored bamboo under high-energy UV light initiated highly efficient and effective photodiscoloration, and UV light is recommended for being applied to industrial bamboo dyeing. Compared with traditional chemical dyeing, the photoinduced dyeing method has no chemical addition and is easy to operate and environmental-friendly.

Cu(II)/sodium borohydride-based electrocatalytic system for reduction and dyeing of indigo

PurposeTo improve the problems as the heavy burden of sewage treatment and environmental pollution caused by the traditional sodium hydrosulfite reduction dyeing of indigo, this study aims to carry out the direct electrochemical reduction dyeing for indigo with the eco-friendly Cu(II)/sodium borohydride reduction system under normal temperature and pressure conditions.Design/methodology/approachThe electrochemical behavior of Cu(II)/sodium borohydride reduction system was investigated by cyclic voltammetry. And, the dyeing performance of the Cu(II)/sodium borohydride reduction system was developed by optimizing the concentration of copper sulfate in the anode electrolyte, applied voltage and reduction time via single-factor and orthogonal integrated analysis.FindingsThe dyeing performance of the Cu(II)/sodium borohydride reduction system is superior to that of the traditional reduction dyeing with sodium hydrosulfite. In the case of the optimized condition, the soaping fastness and dry/wet rubbing fastness of the dyed fabric in the two reduction dyeing processes were basically comparable, the K/S value of electrocatalytic reduction of indigo by Cu(II)/NaBH4 is 11.81, which is higher than that obtained by traditional sodium hydrosulfite reduction dyeing of indigo.Originality/valueThe innovative electrocatalytic reduction system applied herein uses sodium borohydride as the hydrogen source combined with Cu(II) complex as the catalyst, which can serve as a medium for electron transfer and active the dye molecule to make it easier to be reduced. The electrochemical dyeing strategy presented here provides a new idea to improve the reduction dyeing performance of indigo by sodium borohydride.

Analysis of photoaging characteristics of Chinese traditional pigments and dyes in different environments based on color difference principle

AbstractPhotocatalytic oxidation is one of the main factors leading to the aging damage of Chinese traditional dyes and pigments. In this study, in order to analyze the photoaging characteristics of traditional dyes and pigments commonly used in Chinese cultural relics in different environments, we used traditional Chinese painting pigments to make colored paper samples, and used traditional dye extraction and dyeing technology to make colored silk samples. By setting up nitrogen and atmospheric chamber and using LED, tungsten halogen lamp, metal halide lamp and fluorescent lamp as light sources, an accelerated photoaging contrast test on 16 kinds of dyes and pigments was carried out, and then the color difference of different samples in different light environment and atmosphere environment was obtained. Through systematic analysis, the results show that the type of light source and the gas environment will affect the photoaging rate of the samples. The nitrogen environment can significantly reduce the degree and speed of photoaging, especially for organic dyes and pigments.

Research on the Application of Modern Dyeing and Weaving Art from Pattern Design to Dyeing Art based on Computer Technology in Mobile Environment

With the rapid development of Chinese society and economy, the position of traditional dyeing and weaving technology in textile art has been improved. Modern painting art is one of the manifestations of economic and cultural development in modern society, and it is also a new source of inspiration for modern textile pattern design. The integration of mobile Internet and mobile terminals in modern society has subverted the social structure, and a pluralistic, open and infinite society has brought opportunities and challenges to everyone and every industry. The intelligence and convenience of mobile digital media make it integrate into people’s lives and change the way of life of the masses. In order to ensure that people can provide better visual effects and experience, the use of modern painting art can effectively enhance the connotation and value of dyeing and weaving pattern design. In order to get further development of traditional dyeing and weaving technology, we must maintain the national style while improving and innovating its dyeing process. With the progress of modern science and technology, the combination of art and technology is more important.

Dyeing behavior and mechanism of Crocein Orange G on carboxymethyl cotton fabric

Traditional cotton fiber dyeing requires an abundance of salt, which leads to environmental pollution. Consequently, decreasing or eliminating the use of salt has become the primary focus of current research. In this study, Crocein Orange G was used to dye carboxymethyl cotton. Carboxymethyl cotton has better color shades than raw cotton and it is used along with a mordant in a simultaneous-mordant dyeing process, at a pH of 7, Al2(SO4)3·18H2O as the mordant. In addition, it was found that the adsorption kinetics of carboxymethyl cotton followed a pseudo-second-order kinetic model. The equilibrium adsorption capacity increased as the temperature increased from 30 to 50 °C, and the maximum equilibrium adsorption was 8.21 mg g−1 at 50 °C. Furthermore, the adsorption isotherm data exhibited good agreement with the Freundlich isotherm. These results will help achieve salt-free dyeing of cotton fabric in the textile industry.

Synthesis of fluorescent cationic coumarin dyes with rigid molecular structures to improve lightfastness and their related modacrylic dyed fibers

In this study, three novel cationic, fluorescent, coumarin dyes (6a, 6b and 6c) with rigid molecular structures were synthesized and characterized by spectroscopic studies. The photochemical behavior (UV light) of these dyes was studied in ethanol and DMF solvents. Compared to that of a commercial dye (basic yellow-40), the synthesized dyes exhibited good photostability in these solvents. A dyeing experiment was performed on modacrylic fibers with these dyes using a traditional cationic dyeing process. The effect of pH on the absorption spectra and dye bath exhaustion were also studied. The dyeing results showed that all the dyes exhibited obvious fluorescence effects. Based on the luminance factor (β), and photostability behavior, the synthesized dyes can hopefully be applied in high-visibility, fluorescent, yellow warning textiles with improved lightfastness.

X-ray microscopy reveals the outstanding craftsmanship of Siberian Iron Age textile dyers

The excellent craftsmanship of ancient Oriental and Central Asian textile dyers is already demonstrated in the remarkable brilliance and fastness of the colours of the so-called Pazyryk carpet, the by far oldest pile carpet found to date. This specimen resembles the advanced craftsmanship of Iron Age Central Asian textile production. We have employed synchrotron-based µ-XRF imaging to detect the distribution of metal organic pigments within individual fibres of the Pazyryk carpet (about 2500 years old) and compare the results to wool fibres, which we prepared according to traditional Anatolian dyeing recipes. We observe congruent pigment distribution within specimens from the Pazyryk carpet and natural wool fibres that we have fermented prior to dyeing. Therefore, we conclude that the superior fermentation technique has been utilized about 2000 years earlier than known so far.

Using interactive technology in visualized narration book as a medium to promote hakka blue-dyed in jhanghu community

Looking at many products that combine indigo dyeing on the market, the old and new products are continually being introduced. However, there are only a handful of picture books related to traditional craftsmanship and manufacturing. In the literature discussion, we also found that the blue dyeing method was once replaced by modern industrial technology due to the complicated process. In recent years, with the evolution of the times, the awareness of environmental protection has risen, and the advantages of natural environmental protection of indigo dyeing have become increasingly prominent. From plant harvesting, refining indigo to dyeing, no chemical dyes are added. Therefore, let the traditional indigo dyeing technique, which has been in decline for a long time, eliminate the conventional impression and reappear in life with different product appearances. In this regard, the team uses three-dimensional and interactive technology application teaching picture books to allow the public to record the blue dye production process with a flexible, exciting, and plot-style story structure, and a more effective and easily acceptable way of learning technology for young people Ability to absorb relevant knowledge. Besides, in the future, we hope to use this kind of picture book framework to collect, record and preserve Taiwan’s unique traditional techniques in picture books and animation videos.

Eco-friendly colorization of textile originating from polydopamine nanofilm structural color with high colorfastness

Traditional textile dyeing industry usually use chemical pigments and dyes, which bring about a large amount of colored wastewater causing serious environmental pollution. Replacing the traditional high pollution dyeing methods to realize eco-friendly dyeing is very important to the textile dyeing industry, structural colorization maybe one of the most promising methods. In this study, a novel approach was proposed to fabricate eco-friendly coloration of textile originating from polydopamine (PDA) structural color nanofilm with high colorfastness. Four different bright colors were obtained by the polymerization of PDA nanofilm with different reaction times on cotton fabric. However, capillary tension during the formation of PDA nanofilm and weak interaction with fabric substrate resulted in cracking and poor colorfastness. The novel synthesis adhesive of poly (glycidyl methacrylate co-polyethylene glycol methyl ether methacrylate) containing reactive epoxy groups was used to avoid cracking and improve the colorfastness which would form covalent bond on the interface between structural color film and substrate. Therefore, crack-free PDA structural color nanofilm with high colorfastness on cotton fabric surface was obtained. This facile approach provide novel idea for eco-friendly dyeing different kinds of textiles with structural color boosting the cleaner dyeing in textile industrial field.