Effect of solvent induced hydroxylation of cyanoethyl group on dye uptake of cotton fabrics

2008 ◽  
Vol 108 (3) ◽  
pp. 1373-1377 ◽  
Author(s):  
A. Selva Subha ◽  
S. Thambidurai
Keyword(s):  
Cotton Fabrics ◽  
Dye Uptake ◽  
Effect Of Solvent ◽  
Cyanoethyl Group

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

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.

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.

Researches on Microwave Dyeing Cotton Fabrics

2012 ◽  
Vol 627 ◽  
pp. 343-347 ◽  
Author(s):  
Ning Ning Lei ◽  
De Li Gong ◽  
Xiao Rui Ling ◽  
Yi Dong Shi
Keyword(s):  
Microwave Irradiation ◽  
Reactive Dye ◽  
Cotton Fabrics ◽  
Cotton Fibers ◽  
Main Function ◽  
Dye Uptake ◽  
Orientation Degree ◽  
Dyeing Process ◽  
Alternating Electric Field ◽  
Dyeing Rate

This experiment compared four different dyeing cotton fabrics processes with the reactive dye. It was found that under microwave irradiation dyeing, the dye-uptake and fixed percentage of the reactive dye were improved significantly and the salt and the alkali dosage in the dyeing bath were greatly reduced. Analysis found by XRD that microwave irradiation did not significantly change the internal structure of the cotton fibers and only slightly increased the orientation degree of them, so the tensile strength of the fabric was not significantly altered. Therefore, the main function of microwave in dyeing process was that its alternating electric field made the dye and the fiber molecule polarization, to increase the thermal motion of the molecules and the interaction between the polar molecules, thereby improving the dyeing rate and the fixing rate of the reactive dye.

Dyeing and Fastness Properties of Natural Dyes on Cotton Grafted with Monochlorotriazine-β-Cyclodextrin

2012 ◽  
Vol 610-613 ◽  
pp. 590-593
Author(s):  
Panuwat Hernhow ◽  
Potjanart Suwanruji ◽  
Thitinun Karpkird ◽  
Jantip Suesat
Keyword(s):  
Nitrogen Content ◽  
Cotton Fabrics ◽  
Water Soluble ◽  
Natural Dye ◽  
Natural Dyes ◽  
Fastness Properties ◽  
Dye Uptake ◽  
Untreated Cotton ◽  
Visual Color ◽  
Color Yield

The main goal of this work was to study the possibility of improving the natural dye uptake and their fastness properties on cotton fabrics by the application of monochlorotriazine-β- cyclodextrin (MCT-β-CD). Hence, MCT-β-CD was synthesized, characterized, and grafted on cotton fabrics via pad and cure method. The existence of MCT-β-CD on cotton fabrics was confirmed by nitrogen content (%N). Natural dyes used were colorants extracted from turmeric and cassumunar powders, and a commercial natural dye i.e. Natural Red Brown. The commercial one was water soluble whereas the extracted dyes were sparingly soluble in water. These natural dyes were applied on cotton by pad-dry method. The extracted dyes on MCT-β-CD treated cotton fabrics gave higher visual color yield (K/S) than the untreated ones. In contrast, a commercial natural dye exhibited lower color yield on the treated fabrics because of its water soluble nature. The color fastnesses of the natural dyes on the treated cotton fabrics were improved from the untreated cotton samples.

Dyeing Properties and Color Fastness of Cotton Fabrics Dyed with Uncaria Gambir Extract by the Padding Techniques

2016 ◽  
Vol 675-676 ◽  
pp. 505-508
Author(s):  
Pornpen Morakotjinda ◽  
Walaikorn Nitayaphat
Keyword(s):  
Cotton Fabric ◽  
Convenient Method ◽  
Cotton Fabrics ◽  
Test Method ◽  
Color Fastness ◽  
Dye Uptake ◽  
Batch Method ◽  
Color Strength ◽  
Dye Extraction ◽  
Dyeing Method

The pad dyeing offers the most economical and convenient method of dyeing cotton fabric. The energy and water consumptions are at the lowest, thus rendering it more eco friendly. The dyeing of cotton fabric was carried out with dye extraction from the uncaria gambir by using two padding techniques, namely the pad-batch and pad-cure techniques under different conditions. The effect of dyeing method and mordant on color strength and colorimetric parameters (L*, a*, b*, and ΔE) were evaluated. The color fastness to wash, light and perspiration after dyeing the cotton fabric treated with the mordant was determined according to AATCC test method. The study showed that the color strength (K/S) of the dyed cotton fabric using pad-cure method higher than those dyed cotton fabric using pad-batch method. Meta-mordanting showed increase dye uptake and color fastness of cotton fabrics.

scholarly journals To study the influence of mercerizing variation on the absorbency and whiteness test for the cotton woven fabrics

2020 ◽  
Vol 6 (2) ◽  
Keyword(s):  
Research Work ◽  
Cotton Fabrics ◽  
Degree Of Polymerization ◽  
Woven Fabrics ◽  
Dye Uptake ◽  
Whiteness Index ◽  
The Core ◽  
Cotton Yarns ◽  
Different Temperatures ◽  
Microstructure Morphology

The mercerization of cotton fabric is common practice in the preparation process that enhances dye uptake and facilitates uniform dyeing in addition to improving dimensional stability, strength, and luster. Changes in microstructure, morphology, and conformation of the cellulose chains also occur during mercerization. The extent of the changes that occur depends on the processing time, caustic concentration, temperature, degree of polymerization. The main objective of this research work is to analyze the whiteness index, absorbency test of the different fabric samples made of different cotton yarns. The count of these yarns was as under 32Ne, 35Ne, 40Ne, 45Ne, 50. These fabrics were treated at different temperatures of 20 30, 40, 50, 65˚C. It was found that mercerized cotton fabrics at low-temperature Mercerize is done only on the surface of the fabric but as the temperature is increased the mercerization & done on the core of the fabric. Absorbency is increased as the temperature is increased. Whiteness index is decreased as the temperature is increased.

Dyeing of Cotton Fabrics Using Natural Dye Extracted from Mangosteen Pericarps

2013 ◽  
Vol 821-822 ◽  
pp. 589-592
Author(s):  
Qiu Hong Wang
Keyword(s):  
Cotton Fabric ◽  
Ph Value ◽  
Color Difference ◽  
Cotton Fabrics ◽  
Natural Dye ◽  
Color Fastness ◽  
Fastness Properties ◽  
Dye Uptake ◽  
Ph Values

Natural dye was extracted from the mangosteen pericarps using UE method. The work dealed with the investigation of cotton fabric samples dyed with natural dye. The effects of different dye concentrations and pH values were estimated by the dye-uptake(K)and the color difference(△E). And the effects of different dyeing methods of direct dyeing, pre-mordant and after-mordant were tested when alum was used as a mordant. The highest K and △E were obtained on using pre-mordant method when dye concentration was used as 30g/L and pH value as 3. And the color fastness properties of rubbing, washing and perspiration were tested. Compared with the pre-mordant method, it was quite satisfactory for after-mordant method where its ranged between 2-3 to 4-5.

Durable Press Finishing of Cotton Fabrics Dyed with Henna (Lawsonia inermis Linn.) Leaves Extract

2015 ◽  
Vol 749 ◽  
pp. 84-88
Author(s):  
Walaikorn Nitayaphat ◽  
Pornpen Morakotjinda
Keyword(s):  
Tensile Strength ◽  
Cotton Fabrics ◽  
Natural Dye ◽  
Fastness Properties ◽  
Dye Uptake ◽  
Lawsonia Inermis ◽  
Dyeing Properties ◽  
Durable Press ◽  
Durable Press Finishing ◽  
Butanetetracarboxylic Acid

Cotton fabrics were treated with 1,2,3,4-butanetetracarboxylic acid (BTCA) and then dyed with a natural dye extracted from henna (Lawsonia inermisLinn.) leaves. The effect of BTCA concentration on the dyeing properties of cotton fabrics was studied by measuring the K/S values of the treated dyed cotton fabrics. The wrinkle recovery angles of the treated dyed cotton fabrics were assessed. The results proved that the BTCA treated cotton fabrics showed increase dye uptake of cotton fabrics. Concentration of BTCA enhances the durable press and tensile strength of the dyed cotton fabrics. Fastness properties of these to wash, rub and light have also been discussed.

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