Synthesis and Dyeing Properties of Bifunctional Reactive Dyes via 4-(4-Phenyl)-1, 3-Thiazol-2-Amine and 4-(4-bromophenyl)-1, 3-Thiazol –2-Amine on Cotton Fabric

2012 ◽  
Vol 3 (1) ◽  
pp. 1-7 ◽  
Author(s):  
A.I. Ezeribe ◽  
K.A. Bello ◽  
H.M. Adamu ◽  
C.J. Chukwu ◽  
D.A. Boryo ◽  
...  
Author(s):  
Asaye Dessie ◽  
Bethlehem Ashenafi ◽  
Helen Berhane ◽  
Hana Gashawbeza ◽  
Meron Tesfaye

This paper presents the possibility of salt free dyeing of cotton fabric with reactive dye by treating the cotton with chitosan from fish scale and used as a salt for dyeing of cotton with reactive dye. Cellulosic fiber acquires negative charge in aqueous medium and thus repels negatively charged dye anion during dyeing. Such repulsion between fibre and dye is offset by using large quantity of salt in dye bath, particularly for reactive dyes. A low dye bath exhaustion also leads to low dye fixation of reactive dyes on cotton. Therefore the discharged wastewater from dye house creates avoidable environmental threats due to very high dye concentration. Hence, surface modification of cotton to increase dye-fibre interaction is thus the best route to overcome the lack of affinity of cotton to reactive dyes making salt-free reactive dyeing. In this investigation an attempt was made to modify cotton with chitosan extracted from fish scales. The chitosan modified cotton was dyed with reactive dye and compared with the conventional dyed cotton. The color strength of the modified cotton fabric was better than that of conventional sample which is 18.88 and 18.02 respectively. Better fastness properties were experienced in treated cotton sample than the ordinary sample. The fastness properties obtained were better than the conventional sample. From this investigation it was revealed that surface modification of cotton by treatment with chitosan provided better dyeing properties and it can be the best possibility for salt free dyeing of cotton.


2016 ◽  
Vol 860 ◽  
pp. 81-84
Author(s):  
Bandu Madhukar Kale ◽  
Jakub Wiener ◽  
Jiri Militky ◽  
Hafiz Shahzad Maqsood

Cellulose solution was used for coating and it was prepared by dissolving pulp cellulose in Urea-Thiourea-NaOH-Water solvent system. Reactive Red 240 dye was used for dyeing the coated as well as control cotton fabric. The effect of cellulose coating on the dyeing properties of cotton fabric was studied by measuring K/S values of the coated substrate at various concentrations of cellulose and dye. K/S value decreased after coating cellulose on the surface of cotton fabric. The lightness of cotton fabric increased after cellulose coating. SEM micrographs revealed that coated cellulose was attached to cotton fibers. Tensile strength increased after cellulose coating.


2017 ◽  
Vol 241 ◽  
pp. 839-844 ◽  
Author(s):  
Umme Habibah Siddiqua ◽  
Shaukat Ali ◽  
Munawar Iqbal ◽  
Tanveer Hussain

2017 ◽  
Vol 13 (33) ◽  
pp. 378 ◽  
Author(s):  
Shekh Md. Mamun Kabir ◽  
Rezaul Karim ◽  
Khayrul Islam

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.


2020 ◽  
pp. 1-13
Author(s):  
Umme Habibah Siddiqua ◽  
Shaukat Ali ◽  
Tanveer Hussain ◽  
Munawar Iqbal ◽  
Nasir Masood ◽  
...  

2011 ◽  
Vol 332-334 ◽  
pp. 126-129
Author(s):  
Si Tan ◽  
Jian Ming Wang

This research focuses on the promotion of China-hemp in the dye bath, the effect of salt, alkali, time and temperature on the dyeing properties. The optimum processes of thermostability of China-hemp dyeing with reactive dyes are determined by comparing the effect of different concentration of the agents on the K∕S value and color fastness.


2014 ◽  
Vol 101 ◽  
pp. 666-670 ◽  
Author(s):  
Kongliang Xie ◽  
Aiqin Gao ◽  
Min Li ◽  
Xiao Wang
Keyword(s):  

2014 ◽  
Vol 912-914 ◽  
pp. 99-102
Author(s):  
Hong Xian Zeng ◽  
Min Zhong Li ◽  
Ren Cheng Tang

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.


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