A novel approach for estimating the relation betweenK/S value and dye uptake in reactive dyeing of cotton fabrics

2005 ◽  
Vol 6 (3) ◽  
pp. 224-228 ◽  
Author(s):  
Behcet Becerir
Keyword(s):  
Cotton Fabrics ◽  
Dye Uptake ◽  
Reactive Dyeing ◽  
Novel Approach

scholarly journals Renovation and Reuse of Reactive Dyeing Effluent by a Novel Heterogeneous Fenton System Based on Metal Modified PTFE Fibrous Catalyst/H2O2

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Bing Li ◽  
Yongchun Dong ◽  
Zhizhong Ding ◽  
Yiming Xu ◽  
Chi Zou
Keyword(s):  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Molar Ratio ◽  
The Novel ◽  
Heterogeneous Fenton ◽  
Reactive Dyeing ◽  
Toc Removal ◽  
Dyeing Effluent ◽  
Fenton System

Cu-Fe bimetallic grafted polytetrafluoroethylene (PTFE) fiber complexes were prepared and optimized as the novel heterogeneous Fenton catalysts for the degradation of reactive dyes under UV irradiation. Cotton fabrics were dyed with three reactive dyes, namely, Reactive Red 195, Reactive Yellow 145, and Reactive Blue 222, in tap fresh water using exhaustion process. The spent dyeing effluents were then collected and degraded with the optimized Cu-Fe bimetallic grafted PTFE fiber complex/H2O2system. The treated dyeing effluents were characterized and reused for the dyeing of cotton fabrics through the same process. The effect of reuse process number on quality of the dyed cotton fabrics was examined. The results indicated that the Cu-Fe bimetallic modified PTFE fiber complex with a Cu/Fe molar ratio of 2.87 was found to be the most effective fibrous catalyst, which enhanced complete decolorization of the treated dyeing effluents with H2O2in 4 h. However, the TOC removal for the treated dyeing effluents was below 80%. The dyeing quality was not affected for three successive cycles. The increase in residual TOC value influences fourth dyeing cycle. Further TOC reduction of the treated effluents is needed for its repeated reuse in more than three dyeing cycles.

Ultrasonic scouring as a pretreatment of wool and its application in low-temperature dyeing

2018 ◽  
Vol 89 (10) ◽  
pp. 1975-1982 ◽  
Author(s):  
Yi Pan ◽  
Wuchao Wang ◽  
Kang Gong ◽  
Christopher J Hurren ◽  
Qing Li
Keyword(s):  
Low Temperature ◽  
Fiber Surface ◽  
Dye Uptake ◽  
Color Strength ◽  
Ultrasonic Pretreatment ◽  
Reactive Dyeing ◽  
Membrane Complex ◽  
Treated Sample ◽  
Wet Processing ◽  
The Cost

Ultrasonic technology has shown the potential to reduce the cost and environmental impact of textile wet processing. This work investigates the effects of ultrasonic irradiation as a pretreatment on wool and its application in low-temperature dyeing. A significant increase in dye uptake and color strength was observed on the fabric ultrasonically pretreated at 40 kHz, followed by that at 80 kHz and the conventionally treated sample, in both acid dyeing and reactive dyeing. This could be due to the changes of the fiber surface structure and modification of the chemical structure in the cell membrane complex as a result of ultrasonic pretreatment. In acid dyeing, a 20% increase in dye uptake was achieved at 70℃ upon applying ultrasonic pretreatment at 40 kHz. With the assistance of a leveling agent, 80% dye uptake of the fabric treated with ultrasonics at 40 kHz was measured at 70℃ in reactive dyeing. Ultrasonic pretreatment can be applied in raw wool scouring and fabric scouring to achieve an efficient dye uptake, and these are also discussed in this paper.

The Adsorption Character of Kapok Fiber and Reactive Dyeing Technology on Modified Kapok Fiber

2014 ◽  
Vol 9 (3) ◽  
pp. 155892501400900 ◽  
Author(s):  
Ying Ding ◽  
Zaisheng Cai ◽  
Liming Wang ◽  
Yong Shen ◽  
Qunyan Gao
Keyword(s):  
Reactive Dyes ◽  
Reactive Dye ◽  
Dye Uptake ◽  
Direct Dyes ◽  
Kapok Fiber ◽  
Reactive Dyeing ◽  
Wash Fastness ◽  
Fixation Ratio

The adsorption character of kapok fiber with direct dyes and the dyeing technology of cationic modified kapok fiber with reactive dyes were studied in this article. The results indicate that the optimal dyeing technique parameters for the cationic modified kapok fiber with the reactive dye Cibacron FN-R include 0.5~1% (o.w.f) of dyes, 15~20g·L-1 of NaCl, and 2g·L-1 of JFC with bath ratio of 1:50 at a dyeing temperature of 40°C for 30min. The dyed kapok fiber was fixed with 15~20g·L-1 of Na2CO3 for 60min. As a result, the dye-uptake, fixation ratio, wash fastness, friction fastness, and K/S of cationic modified kapok fabric were enhanced by above technique.

Investigation of Ultrasonic Effects in Cotton Dyeing Processing

2013 ◽  
Vol 787 ◽  
pp. 138-142 ◽  
Author(s):  
De Shuai Sun ◽  
Long Fang ◽  
Tao Liu
Keyword(s):  
Cotton Fiber ◽  
Ultrasound Irradiation ◽  
Cotton Fabrics ◽  
Dye Uptake ◽  
Adsorption Model ◽  
Langmuir Adsorption ◽  
Langmuir Adsorption Model ◽  
Dyeing Process ◽  
Direct Dye ◽  
Ultrasound Dyeing

Ultrasound can promote the dye-uptake in the dyeing process. The effects of ultrasound on the fiber, dye and dyeing system were investigated by dyeing cotton fabrics with a direct dye. The dye exhaustion exceeded 80% in 30 minutes with the assistant of ultrasound. Langmuir adsorption model could descript the ultrasound dyeing process of direct dye. The area of fiber accessibility of cotton fiber increased 1.68 times under the action of ultrasound. The absorbance of direct dye solution increased remarkably in the first 10 minutes of ultrasound irradiation. Ultrasound accelerated the diffusion of dye on cotton fiber, and then the diffusion coefficient increased 46 times

Synthesis of TiO2–SiO2 colloid and its performance in reactive dyeing of cotton fabrics

2012 ◽  
Vol 88 (3) ◽  
pp. 992-1001 ◽  
Author(s):  
Darinka Fakin ◽  
Nika Veronovski ◽  
Alenka Ojstršek ◽  
Mojca Božič
Keyword(s):  
Cotton Fabrics ◽  
Reactive Dyeing

Eco-friendly salt-free reactive dyeing of cotton (muslin) fabric after cationization with amino acid from soya

2016 ◽  
Vol 86 (20) ◽  
pp. 2179-2192 ◽  
Author(s):  
Ashis Kumar Samanta ◽  
Tapas Ranjan Kar ◽  
Asis Mukhopadhyay ◽  
Debashis Shome ◽  
Adwaita Konar
Keyword(s):  
Amino Acids ◽  
Cotton Fabric ◽  
Reactive Dye ◽  
Reaction Scheme ◽  
Dye Uptake ◽  
Reactive Dyeing ◽  
Chemically Modified ◽  
High Exhaustion ◽  
Natural Amino Acids ◽  
Color Depth

Bleached cotton fabric was chemically modified (cationized)with natural amino acids extract obtained by acid hydrolysis (6N HCL) from soya bean seed waste, adding MgCl2 as an acid donor in the pad-dry-calendaring process to investigate the changes in textile properties and its dyeability with reactive dye in both a conventional alkaline dye bath and salt-free acidic dye bath. This modified cotton incorporates new functional groups producing [Formula: see text] in acid bath to obtain cationized cotton, rendering it to eco-friendly salt-free reactive dyeing at acceptable shade depth without much sacrifice of other textile-related properties. Bi-functional high exhaustion-type reactive dye shows better dye uptake than mono-functional cold brand as well as hot brand reactive dye. Moreover, the application of a specific dye fixing agent further improves surface color depth ( K/ S) of the soya-modified cotton fabric. The study of surface morphology of said chemically modified cotton substrate indicates a higher degree of surface deposition, that is, more anchorage of soya extracted amino acids on cotton fabric. Chemical anchorage as per the reaction scheme postulated for such modifications is verified with Fourier transform infrared spectroscopy. Finally, it is revealed that cotton treated with soya extract provides a new route of eco-friendly salt-free reactive dyeing with high exhaustion-type reactive dyes showing much higher dye uptake than the control cotton fabric.

scholarly journals Kinetics of Reactive Dyed Pretreated Cotton Fabrics with and without using Salt

2019 ◽  
Vol 8 (4) ◽  
pp. 9723-9726
Keyword(s):  
Waste Water ◽  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Cross Linking ◽  
Dye Uptake ◽  
Effluent Water ◽  
Particle Movement ◽  
Wash Fastness ◽  
Kinetics Of

Most of the cotton fabrics at present are dyeing using reactive dyes which requires large quantities of salt, further produce large amount of effluent load to the environment in the form of more salinity in the effluent water along with other pollutants. In order to reduce the salinity in the waste water lot of investigations were carried out. Cotton fabrics pretreated with chitosan were dyed with reactive dyes. Pretreated samples were dyed without using salt as an electrpolyte. The influence of pretreatment on kinetics in dye bath i.e rate of dye particle movement towards the fabric, wash fastness, rubbing fastness was determined. The results of this study shows that the pretreatment of cotton with chitosan increases dye uptake and shows good fastness to washing and rubbing same as that of conventional way of dyed samples. It was determined that chitosan was effective cross linking agent in salt-free dyeing of cotton fabrics.

scholarly journals Comparative study between two types of electrolyte used in the reactive dyeing of cotton

2019 ◽  
Vol 70 (01) ◽  
pp. 30-36
Author(s):  
BAFFOUN AYDA
Keyword(s):  
Diffusion Coefficient ◽  
Sodium Chloride ◽  
Comparative Study ◽  
Salt Concentration ◽  
Sodium Sulfate ◽  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Reactive Dyeing ◽  
Factors Affecting ◽  
Dyed Fabric

The aim of this paper was to compare the efficiency of two type of electrolyte in the dyeing of cotton fabrics with reactive dyes. Factors affecting dye ability such as salt concentration, and fastness performances such as alkaliconcentrationwere studied. The colouryield K/S and colour fastness of the dyed fabric using sodium sulfate were comparable to those obtained with sodium chloride. However, the exhaustion and the fixation timewere shorter and the diffusion coefficient was lower in the case of sodium sulfate.

Dyeing Properties and Color Fastness of Chitosan Treated Cotton Fabrics with Thian King Leaves Extract

2015 ◽  
Vol 749 ◽  
pp. 89-93 ◽  
Author(s):  
Pornpen Morakotjinda ◽  
Walaikorn Nitayaphat
Keyword(s):  
Tensile Strength ◽  
Cotton Fabrics ◽  
Natural Dye ◽  
Test Method ◽  
Color Fastness ◽  
Fastness Properties ◽  
Dye Uptake ◽  
Whiteness Index ◽  
Chitosan Concentration ◽  
Finishing Agent

Chitosan, a naturally available biopolymer, was used as finishing agent to increase dye uptake and color fastness of cotton fabrics. Thian King leaves extract a natural dye was applied on cotton fabrics after chitosan treatment. The whiteness index and tensile strength of samples were measured to study the effect of chitosan application. The color of dyed samples was investigated in term of the colorimetric parameters (L*, a*, b*, ∆E) and K/S values. The color fastness to washing, rubbing and light of dyed samples was determined according to AATCC test method. The results showed that the chitosan concentration enhances the whiteness index and tensile strength of the treated cotton fabrics. Chitosan treatment showed increase dye uptake of cotton fabrics. Fastness properties of these to washing, rubbing and light have also been discussed.

Study on a water-saving and salt-free reactive dyeing of cotton fabrics in non-aqueous medium of liquid paraffin system

2020 ◽  
Vol 111 (10) ◽  
pp. 1538-1545
Author(s):  
Yuan An ◽  
Junran Ma ◽  
Zhenxu Zhu ◽  
Min’gan Hu ◽  
Jianzhong Shao
Keyword(s):  
Aqueous Medium ◽  
Liquid Paraffin ◽  
Cotton Fabrics ◽  
Water Saving ◽  
Reactive Dyeing
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