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.

Cationic Modification of Cotton Fabrics and Reactive Dyeing Characteristics

2012 ◽  
Vol 7 (4) ◽  
pp. 155892501200700 ◽  
Author(s):  
Nebojša Ristic ◽  
Ivanka Ristic
Keyword(s):  
Zeta Potential ◽  
Salt Concentration ◽  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Intensity Increase ◽  
Practical Application ◽  
Color Intensity ◽  
Reactive Dyeing ◽  
Cationic Modification ◽  
Favorable Influence

The effect of cationic modification of cotton fabrics, using commercial agent Sintegal V7conc, on reactive dyeing characteristics was studied in this work. The changes after cationization and their effects on practical application of reactive dyes were identified by various methods. Cationically modified fabrics have more positive zeta potential, compared to untreated fabrics, which has a favorable influence on reactive dyeing in the absence or presence of salt. Color intensities of reactive dyes reached their maximum on samples treated with the highest concentration of Sintegal V7conc solution and dyed in the presence of standard salt concentration. The results obtained indicate that color intensity increase is a combined contribution of both salt and cationic agent on adsorption and fixation of reactive dyes on cotton.

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.

Research and Discussion of the Low-Salt Dyeing of Reactive Dyes

2013 ◽  
Vol 800 ◽  
pp. 103-105 ◽  
Author(s):  
Xu Lei
Keyword(s):  
Cotton Fabric ◽  
Sodium Sulfate ◽  
Reactive Dyes ◽  
Traditional Treatment ◽  
Reactive Dyeing ◽  
Optimum Content ◽  
Low Salt

The application of effect in substitute salt DT in the low-salt dyeing of reactive dyes on cotton fabric is discussed in the research. The optimum content of DT is measured by analyzing the degree of color-fixation, K/S value etc. Compared with the traditional treatment using the agent of sodium sulfate, adding substitute salt DT in reactive dyeing is more degradable and eco-friendly to the nature.

Effects of the perspiration on the photo-fading of reactive dyes

2018 ◽  
Vol 89 (5) ◽  
pp. 688-697 ◽  
Author(s):  
Yumei Jia ◽  
Liyuan Zhang ◽  
Kai Liu ◽  
Ruoyang Chen ◽  
Caiqian Zhang ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Aspartic Acid ◽  
Influencing Factor ◽  
Reactive Dyes ◽  
Color Difference ◽  
Cotton Fabrics ◽  
Japanese Industrial Standard ◽  
Orthogonal Experiments ◽  
Artificial Sweat ◽  
Technical Study

In this paper, we aim to study the effects of artificial sweat components on the photo-fading of reactive dyes on cotton fabrics. Two standards of artificial perspiration were tested according to the Japanese Industrial Standard (JIS L 0888 standard) and the Association for Textile Technical Study (ATTS standard), respectively. The light and perspiration stability of reactive dyes was characterized using the color difference value (DE). Standard orthogonal experiments were designed to study the influences of each artificial sweat component and the interaction between these components on the photo-fading reaction of the selected reactive dyes. The results indicated that L-histidine monohydrochloride monohydrate (0.5 g/L) was the dominant influencing factor on the light and perspiration stability of the reactive dyes exposing under both standards of artificial perspiration. In the JIS L 0888 standard, sodium chloride (5.0 g/L) played the significant role in the photo-fading reaction of the reactive dyes, while the influences caused by other components could be neglected. In the ATTS standard, sodium chloride (5.0 g/L), DL-aspartic acid (0.5 g/L) and glucose (5.0 g/L) aggravated the photo-fading of the selected reactive dyes.

Simultaneous Thermochromic Pigment Printing and Se-NP Multifunctional Finishing of Cotton Fabrics for Smart Childrenswear

2020 ◽  
Vol 38 (3) ◽  
pp. 182-195
Author(s):  
Tarek M. Abou Elmaaty ◽  
Shereen A. Abdeldayem ◽  
Nashwa Elshafai
Keyword(s):  
Cotton Fabrics ◽  
Factors Affecting ◽  
Textile Materials ◽  
Smart Textile ◽  
Screen Printing Technique ◽  
Printing Technique ◽  
Flat Screen ◽  
Ultraviolet Protection ◽  
Escherichia Coli Bacteria ◽  
Optimum Formula

Thermochromic (TC) pigments offer significant potential for functional and aesthetic design of smart textile materials. In this study, TC (blue and red) pigments were applied to cotton fabrics and printed on especially designed childrenswear by flat screen printing technique. The antibacterial and ultraviolet protection functionalities have been implemented into the fabrics under study by using selenium nanoparticles. The factors affecting the printing process were studied and the optimum formula was screen printed to produce the pattern’s designs of childrenswear. After conducting several tests, the results showed a significant color-changing effect depending on temperature, the color fastness properties to light, wash, and rubbing were excellent. Antibacterial activity of printed fabrics was very good against Bacillus cereus and Escherichia coli bacteria and the anti-ultraviolet protection was found to be very good. The printed fabrics can be as protective childrenswear as shown in this work.

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