Optimization of Dyeing Process of Cotton Fabric with Cochineal Dye

2020 ◽  
Vol 21 (3) ◽  
pp. 555-563 ◽  
Author(s):  
Ana Sutlović ◽  
Iva Brlek ◽  
Valerija Ljubić ◽  
Martinia Ira Glogar
Keyword(s):  
Cotton Fabric ◽  
Dyeing Process

scholarly journals Investigation into the color stripping of the pigment printed cotton fabric using the ozone assisted process: A study on the decolorization and characterization

2021 ◽  
Vol 16 ◽  
pp. 155892502199275
Author(s):  
Ajinkya Powar ◽  
Anne Perwuelz ◽  
Nemeshwaree Behary ◽  
Le vinh Hoang ◽  
Thierry Aussenac ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Photoelectron Spectroscopy ◽  
Treatment Time ◽  
Pilot Scale ◽  
Chemical Recycling ◽  
X Ray ◽  
Cellulosic Fibers ◽  
Dyeing Process ◽  
Cellulosic Textiles ◽  
Ozonation Process

Color stripping is one of the most convenient ways to rectify the various shade faults occurred during printing or dyeing process of textiles. But, the conventional chemical assisted process poses serious risk of the environmental pollution. Secondly, the chemical recycling of the cellulosic fibers may be disrupted due to the presence of the impurities like colorants, finishes, and the additives in the discarded textiles. So, there is a need to study ways to remove such impurities from the discarded cellulosic textiles in a sustainable manner. This work examines the decolorization of the pigment prints on cellulosic fabrics at pilot scale using an ozone-assisted process. The effect of varying pH, ozone concentration and the treatment time on the decolorization of the pigment prints was optimized using the response surface methodology technique. The effects of ozonation process parameters on the mechanical properties of cellulosic cotton fabric were measured. Decolorization of pigment printed samples was studied with respect to the surface effects by a scanning electron microscopy (SEM), and the chemical removal effects of ozonation treatment were studied using X-ray photoelectron spectroscopy. The possible mechanism regarding the action of ozone for the decolorization is discussed.

scholarly journals Combination of wet fixation and drying treatments to improve dye fixation onto spray-dyed cotton fabric

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lina Lin ◽  
Wenju Zhu ◽  
Cong Zhang ◽  
Md. Yousuf Hossain ◽  
Zubair Bin Sayed Oli ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Reactive Dye ◽  
Fixation Time ◽  
Drying Process ◽  
Combined Treatments ◽  
Fixation Rate ◽  
Dyeing Process ◽  
Textile Dyeing ◽  
Color Uniformity ◽  
Four Levels

AbstractThe conventional dyeing process requires a substantial amount of auxiliaries and water, which leaches hazardous colored effluents to the environment. Herein, a newly developed sustainable spray dyeing system has been proposed for cotton fabric in the presence of reactive dyes, which has the potential to minimize the textile dyeing industries environmental impact in terms of water consumption and save significant energy. The results suggest that fresh dye solution can be mixed with an alkali solution before spray dyeing to avoid the reactive dye hydrolysis phenomenon. After that, drying at 60–100 °C, wet fixation treating for 1–6 min, and combined treatments (wet fixation + drying) were sequentially investigated and then dye fixation percentages were around 63–65%, 52–70%, and above 80%, respectively. Following this, fixation conditions were optimized using L16 orthogonal designs, including wet fixation time, temperature, dye concentration, and pH with four levels where the “larger-the-better” function was selected to maximize the dye fixation rate. Additionally, the color uniformity and wash and rubbing fastnesses were at an acceptable level when both treatments were applied. Finally, the dyes were hydrolyzed after wet fixation, and the hydrolysis percentages were enhanced after the drying process.

A novel low add-on technology of dyeing cotton fabric with reactive dyestuff

2017 ◽  
Vol 88 (12) ◽  
pp. 1345-1355 ◽  
Author(s):  
Xiaodong Mao ◽  
Yi Zhong ◽  
Hong Xu ◽  
Linping Zhang ◽  
Xiaofeng Sui ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Surface Temperature ◽  
Cotton Fabric ◽  
Reactive Black 5 ◽  
The Novel ◽  
Color Strength ◽  
Fixation Rate ◽  
Dyeing Process ◽  
Alkaline Agent ◽  
Water Ratio

A novel low add-on dyeing process of cotton fabric with C.I. Reactive Black 5 has been implemented successfully with the assistance of dye-jet ejector units to produce precise wet pick-up ranging from 20% to 50%. The steaming process of the low add-on technology was investigated through evaluating the effects of relative humidity, steaming temperature, steaming time and water ratio on the surface temperature of the wet fabric and their influence on the dye properties, as well as the effect of the wet pick-up on dye properties. The optimal dyeing process was also conducted, including build-up properties and the concentrations of the alkaline agent and the electrolyte via the evaluation of the color strength ( K/ S value) and dye fixation rate. A comparison was made between the novel low add-on dyeing process and conventional dyeing process by assessing the dye properties, color shade and color levelness. The results indicated that the fabric dyed with the low add-on process had excellent washing fastness, rubbing fastness, a similar color shade and superior levelness in comparison with conventional one-bath pad-steam dyeing.

Investigation on Dyeing Performances of the Modified Cotton Fabric with Quaternary Ammonium Salt as Modifier

2014 ◽  
Vol 685 ◽  
pp. 141-143
Author(s):  
Ming Shu Song ◽  
Jie Lin ◽  
De Hong Cheng ◽  
Sheng Lu ◽  
Xu Hao ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Ammonium Salt ◽  
Salt Concentration ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Breaking Strength ◽  
Dyeing Process ◽  
Low Salt ◽  
Structure Modifier ◽  
Modification Condition

In this paper the different kind of quaternary ammonium salt was applied to modify the cotton fabric and then the modified cotton fabric was dyed under low salt condition. The effect of modifier structure, modifier concentration, modification time and temperature on the dyeing performances of the modified cotton fabric was investigated. The results indicated that the optimal modification condition was that the modifier was Octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate, modifier concentration was 40 g/L, modification time was 40 min, modification temperature was 60 °C and the salt concentration was 25% of the conventional dosage. The K/S value, soaping fastness and breaking strength of the modified cotton fabric under low salt condition was the same level as the conventional dyeing process.

K/S value prediction of cotton fabric using PSO-LSSVM

2020 ◽  
Vol 90 (23-24) ◽  
pp. 2581-2591
Author(s):  
Chengbing Yu ◽  
Ziwei Xi ◽  
Yilin Lu ◽  
Kaixin Tao ◽  
Zhong Yi
Keyword(s):  
Cotton Fabric ◽  
Back Propagation ◽  
Back Propagation Neural Network ◽  
Reactive Dye ◽  
Cotton Fabrics ◽  
Support Vector ◽  
Process Conditions ◽  
Value Prediction ◽  
Dyeing Process ◽  
Important Index

Cotton is one of the world’s most common natural clothing materials. It is dyed mainly using the exhaustion, cold pad-batch, and pad-dry-pad-steam dyeing methods. The K/S value, an important index for measuring the depth of color, of cotton fabric dyed with reactive dyes is greatly influenced by various factors of the dyeing process. In this study, three models were developed incorporating least squares support vector machine (LSSVM) to predict the K/S values of dyed cotton fabrics, while particle swarm optimization (PSO) was applied to optimize and tune the parameters of the LSSVM model (PSO-LSSVM). Model inputs include dye concentration and process conditions, which are both easily obtainable variables. The K/S values from the PSO-LSSVM model are consistent with actual measured K/S values of dyed cotton fabrics. Moreover, a comparison among PSO-LSSVM, LSSVM and back propagation neural network results shows the superiority of the PSO-LSSVM approach. Results of this work indicate that a PSO-LSSVM model is a powerful tool for predicting the K/S value in cotton fabric dyed with reactive dye and thus a means to improve production processes and reduce costs.

Study on Cycle Dyeing Technology of Cotton Fabric with X-Reactive Dye

2013 ◽  
Vol 821-822 ◽  
pp. 655-660
Author(s):  
Xu Hao
Keyword(s):  
Waste Water ◽  
Cotton Fabric ◽  
Breaking Strength ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Color Fastness ◽  
Reactive Dyeing ◽  
Dyeing Process

To increase the utilization of X-reactive dyes, reduce dyeing waste water, protect the environment and promote wider use of eco-dyeing technique, cycle technique was used to improve the reactive dyeing on cotton fabric. The results of experiment showed that hydrolysis X-reactive dye for one-bath-two-step dyeing can be effectively activated by activator in the residue and remains the original dye activity. The obtained results also indicated the cycle dyeing can be implemented 6 times by adding quantitative X-reactive dye, and dye used in cycle dyeing was less than that of the normal dyeing process. The K/S values, washing color fastness, rubbing fastness and breaking strength of the cycle dyeing sample changed a little in comparison with those of the conventional dyeing technology.

Reactive fluorescent dye functionalized cotton fabric as a “Magic Cloth” for selective sensing and reversible separation of Cd2+ in water

2015 ◽  
Vol 3 (33) ◽  
pp. 8485-8489 ◽  
Author(s):  
Yuanyuan Luo ◽  
Dan Tang ◽  
Weiping Zhu ◽  
Yufang Xu ◽  
Xuhong Qian
Keyword(s):  
Cotton Fabric ◽  
High Selectivity ◽  
Fluorescent Sensor ◽  
Fluorescent Dye ◽  
Cotton Fibers ◽  
Fluorescent Material ◽  
Dyeing Process

A reusable fluorescent material FCM, which was obtained through the dip-dyeing process of immobilizing the fluorescent sensor CM onto natural cotton fibers, exhibited high selectivity for detecting and separating Cd2+ in water.

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