Reactive dyeing systems for wool fibres based on hetero-bifunctional reactive dyes. Part 3; Application of specially prepared hetero-bifunctional and related model dyes on wool

2003 ◽  
Vol 119 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Ho Jung Cho ◽  
David M Lewis
Keyword(s):  
Reactive Dyes ◽  
Reactive Dyeing ◽  
Related Model

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.

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.

Dyeing Properties of Warm-Dyeing Reactive Dyes for Viscose/Chitin Blend Fiber

2014 ◽  
Vol 912-914 ◽  
pp. 99-102
Author(s):  
Hong Xian Zeng ◽  
Min Zhong Li ◽  
Ren Cheng Tang
Keyword(s):  
Reactive Dyes ◽  
Viscose Fiber ◽  
Dyeing Properties ◽  
Reactive Dyeing ◽  
Reactive Orange 16 ◽  
Viscose Fibers ◽  
Blend Fiber ◽  
The Difference ◽  
Reactive Orange ◽  
Low Dosage

In this work, the dyeing properties of three warm-dyeing reactive dyes (C.I. Reactive Orange 16, Red 198 and Blue 222) for functional viscose/chitin blend fiber containing partially deacetylated chitin were investigated. Under all the dyeing conditions, reactive dyes exhibited higher exhaustion and fixation on viscose/chitin fiber than on conventional viscose fiber. The difference of dye exhaustion and fixation between viscose/chitin and viscose fibers became greater in the following cases: low to moderate dye concentration, low dyeing temperature, no alkali, the use of the dyes with low molecular weight, etc. The dependence of the exhaustion and fixation of reactive dyes on temperature on viscose/chitin fiber was less than that on viscose fiber. The reactive dyeing of viscose/chitin fiber required only a low dosage of sodium carbonate.

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.

scholarly journals Decolorization of reactive dyeing wastewater by ferrous ammonium sulfate hexahydrate

2014 ◽  
Vol 5 (1) ◽  
pp. 27-31
Author(s):  
Yuan-Shing Perng ◽  
Ha Manh Bui
Keyword(s):  
Ammonium Sulfate ◽  
Dye Removal ◽  
Mixing Time ◽  
Reactive Dyes ◽  
Ferrous Ammonium Sulfate ◽  
Dyeing Wastewater ◽  
Reactive Dyeing ◽  
Initial Ph ◽  
Slow Mixing ◽  
Ferrous Ammonium

This paper presents the result of dyeing solution coagulation with the use of ferrous ammonium sulfate hexahydrate (FAS). The examined solution contains two reactive dyes: Black 5 and Blue 19. It has been shown that the efficiency of the dye removal depends on the type of dye, coagulation dosage and the initial pH. Our result showed that the increase of initial pH up to 12 enhanced the color removal efficiency; the FAS dose was determined 280 ml (Black 5) and 180 mg/l (Blue 19) at slow mixing time 15 min, agitation speed 60 rpm, and the initial dye concentration should be 50 and 100 mg/L for Black 5 and Blue 19, respectively. Chất keo tụ sắt (II) amoni sulfate (FAS) được sử dụng khử màu của hai màu nhuộm hoạt tính phổ biến (Blue 19 và Black 5). Kết quả cho thấy, quá trình keo tụ bị ảnh hưởng nhiều bởi loại màu nhuộm, nồng độ chất keo tụ và pH của dung dịch đầu vào. Với nồng độ FAS 280 mg/l (Black 5) và 180 mg/l (Blue 19), pH đầu vào dung dịch khoảng 12, thời gian phản ứng 15 phút, tốc độ khuấy 60 vòng/phút ứng với nồng độ màu Black 50 mg/L và blue 100 mg/L dung dịch gần như mất màu hoàn toàn.

Impact of Reactive Dye Structures on Dyeing Properties in Salt-Free Reactive Dyeing

2013 ◽  
Vol 781-784 ◽  
pp. 2716-2721 ◽  
Author(s):  
Xiao Xu Teng ◽  
Jian Wei Shi ◽  
Shu Fen Zhang
Keyword(s):  
Molecular Weight ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Molecular Structures ◽  
Dyeing Properties ◽  
Reactive Dyeing ◽  
Large Molecular Weight ◽  
Salt Addition ◽  
Cationic Cotton ◽  
Anionic Groups

The cationic cotton was obtained by pretreatment with tertiary amine cationic polyacrylamide, and dyed with various active groups reactive dyes in the absence of salt. The influences of reactive dye structures on dyeing properties were analyzed and the results showed that types of active groups in reactive dyes had little effect on dye exhaustion, but it was quite relative with dye reactivity and fixation. Reactive dyes with low molecular weight and more anionic groups were adsorbed more quickly on the cationic cotton and their adsorption time to reach adsorption equilibrium was shorter, compared with that with large molecular weight and less anionic groups. Moreover, exhaustion of reactive dyes with large molecular structures decreased due to sterically hindered effect in the salt-free dyeing. The results also displayed that the monochlorotriazine reactive dyes and the vinyl-sulfone ones were favorable to dye the cationic cotton without salt addition.

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.

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.

Sign in / Sign up

Export Citation Format

Share Document