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.

In Situ Measurement of Reactive Dye Concentration Using Optical Fibre Sensing System

2011 ◽  
Vol 332-334 ◽  
pp. 1864-1867 ◽  
Author(s):  
Jun Ying Tian ◽  
Xiao Ming Zhao ◽  
Jian Fei Zhang
Keyword(s):  
Optical Fibre ◽  
Reactive Dye ◽  
Measured Data ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Sensing System ◽  
Dyeing Process ◽  
Textile Dyeing ◽  
And Control

To develop an online monitoring and control system for textile dyeing process, an optical fibre sensing system was designed and developed. This paper focused on the measurement of reactive dye concentration in dyebath using the optical fibre sensing system. The optical fibre sensors were proved to be practicable to measure the dye concentration in the dye concentration range during the dyeing process. The measured data was compared with the calculated value, and the linear relation of absorbance to dye concentration was examined. The experiment included single dyes and mixture with double dyes. Dyes concentration measurement accuracy was discussed. The results show that the absorbance is proportional to dye concentration within actual dyeing concentration range. Measured data of dyes concentration well matched the calculated value. The limitations and the approach for improving this optical fibre sensing system were discussed.

scholarly journals Comparative study on natural and reactive dye for cotton coloration

2018 ◽  
Vol 16 (3) ◽  
Author(s):  
Md. Reazuddin Repon ◽  
M. Tauhidul Islam ◽  
Md. Abdullah Al Mamun ◽  
Muhammad Abdur Rashid
Keyword(s):  
Fiber Surface ◽  
Reactive Dye ◽  
Natural Dye ◽  
Synthetic Dyes ◽  
Light Fastness ◽  
Reactive Dyeing ◽  
Natural Dyeing ◽  
Dyeing Process ◽  
Textile Dyeing ◽  
Cotton Knitted Fabric

Eco-friendly textile dyeing with natural dye is a global soaring interest for avoiding environment pollution incurred by synthetic dyes. This study attempts to compare the dyeing properties of cotton knitted fabric dyed with banana floral stem (BFS) sap and reactive dye. Natural dye i.e. BFS sap was extracted from the species of Musa sapientum by roller squeezer machine. The recipe of reactive dyeing was selected to match the exact shade with the natural dyed specimens. Conformation of the dye molecule fixation onto fiber surface was assured by FTIR-ATR spectra. Comparative analysis were carried out in response of degree of color levelness, color fastness to water, washing, perspiration, rubbing, light and effluent qualities. The economic viability of natural dyeing was also estimated. The specimens dyed with BFS sap have excellent color levelness and color durability characteristic alike reactive dye except light fastness properties. Moreover, natural dyeing costs were almost half of the reactive dyeing. Finally, this inquiry forecasts a less time, energy and water consuming, economical and ecofriendly dyeing process which could be deployed as replacement of reactive dyes with a few compromises.

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.

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.

Seawater as an alternative to dye cotton fiber with reactive dyes

2020 ◽  
pp. 004051752097248
Author(s):  
Iêda Letícia de Souza Ferreira ◽  
José Ivan de Medeiros ◽  
Fernanda Steffens ◽  
Fernando Ribeiro Oliveira
Keyword(s):  
Textile Industry ◽  
Reactive Dye ◽  
Chemical Processing ◽  
Fastness Properties ◽  
Color Strength ◽  
Dyeing Process ◽  
High Consumption ◽  
Textile Dyeing ◽  
Very High ◽  
Intense Color

The textile industry is a sector completely dependent on water for its full functioning; on the other hand, water represents a very high cost in the production process. The textile chemical processing area is mainly responsible for the large consumption of water. On the opposite side of this high consumption there is an evident water crisis worldwide. That fact has led to many problems to textile companies, mainly for the preparation, dyeing and printing sectors. This present work focuses on an ecologically friendly alternative for cellulosic fiber dyeing processes using seawater. Dyeing cotton fabrics with reactive dye in three primary colors (blue, yellow and red) was performed, and the results compared with processes using distilled water. Samples dyed with seawater exhibit good uniformity, intense color (color strength – K/ S) and excellent washing and rubbing fastness properties compared to the conventional process. It was possible to observe also that the use of seawater did not affect the mechanical properties of the substrate. Thereby, it was verified that the use of seawater presents as a potential and important alternative to applications in the textile dyeing process.

scholarly journals Comparative study on natural and reactive dye for cotton coloration

2019 ◽  
Vol 16 (3) ◽  
Author(s):  
Md. Reazuddin Repon ◽  
M. Tauhidul Islam ◽  
Md. Abdullah Al Mamun ◽  
Muhammad Abdur Rashid
Keyword(s):  
Fiber Surface ◽  
Reactive Dye ◽  
Natural Dye ◽  
Synthetic Dyes ◽  
Light Fastness ◽  
Reactive Dyeing ◽  
Natural Dyeing ◽  
Dyeing Process ◽  
Textile Dyeing ◽  
Cotton Knitted Fabric

Eco-friendly textile dyeing with natural dye is a global soaring interest for avoiding environment pollution incurred by synthetic dyes. This study attempts to compare the dyeing properties of cotton knitted fabric dyed with banana floral stem (BFS) sap and reactive dye. Natural dye i.e. BFS sap was extracted from the species of Musa sapientum by roller squeezer machine. The recipe of reactive dyeing was selected to match the exact shade with the natural dyed specimens. Conformation of the dye molecule fixation onto fiber surface was assured by FTIR-ATR spectra. Comparative analysis were carried out in response of degree of color levelness, color fastness to water, washing, perspiration, rubbing, light and effluent qualities. The economic viability of natural dyeing was also estimated. The specimens dyed with BFS sap have excellent color levelness and color durability characteristic alike reactive dye except light fastness properties. Moreover, natural dyeing costs were almost half of the reactive dyeing. Finally, this inquiry forecasts a less time, energy and water consuming, economical and ecofriendly dyeing process which could be deployed as replacement of reactive dyes with a few compromises.

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 A Comparative Study on Dyeing Properties of Hemp and Cotton Fiber

2017 ◽  
Vol 13 (33) ◽  
pp. 378 ◽  
Author(s):  
Shekh Md. Mamun Kabir ◽  
Rezaul Karim ◽  
Khayrul Islam
Keyword(s):  
Comparative Study ◽  
Cotton Fabric ◽  
Cotton Fiber ◽  
Reactive Dye ◽  
Woven Fabrics ◽  
Fastness Properties ◽  
Dyeing Properties

In this study, a mixed bi-functional reactive dye was applied to the cotton and hemp woven fabrics. Their dyeing and fastness properties were compared. From the results, it was observed that the cotton fabric exhibits better exhaustion and levelness than hemp woven fabrics. The build-up and fastness properties of the two woven fabrics appeared to be almost similar.

scholarly journals Reducing Energy and Water Consumption in Textile Dyeing Industry with Cleaner Production by Inlet-Outlet Modification to Reuse Wastewater

2021 ◽  
Vol 58 (S) ◽  
pp. 49-58
Author(s):  
Erkata Yandri ◽  
Rinaldi Idroes ◽  
Roy Hendroko Setyobudi ◽  
Carolus Boromeus Rudationo ◽  
Satriyo Krido Wahono ◽  
...  
Keyword(s):  
Water Consumption ◽  
Initial Conditions ◽  
Cleaner Production ◽  
Second Step ◽  
Similar Action ◽  
The Third ◽  
Dyeing Process ◽  
Modification Process ◽  
Textile Dyeing ◽  
Process Wastewater

Dyeing Finishing (DF) textile industries which consume a lot of energy, chemicals, water, etc., then produce a lot of wastewater which creates significant environmental problems, can be anticipated by applying Cleaner Production. This paper is presented to discuss the technical modification process of dyeing production machines, which reuse process wastewater to save water and energy consumption in the production process. For that reason, there are three steps taken. First, understand the process flow of the textile dyeing industry. Second, understand in detail the dyeing process of the Jet Dyeing (JD) machine. Third, implement steps on the floor, focusing on the JD machine, starting from the initial conditions until the third step. As a result, savings in water consumption per day for 10 JD machines were achieved by almost 50 %, with details; at the initial status 700 000 L, 600 000 L in the first step, 430 000 L in the second step, and finally 400 000 L in the third step. A similar action can be carried out in other processes, such as washing, de-sizing, or in other industries which also consume a lot of water and energy.

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