Dyeing with Disperse Dyes

Koh, Joonseok

doi:10.5772/20458

Cited by 38 publications

(55 citation statements)

References 45 publications

(51 reference statements)

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“…Through their hydrophobic properties, these dyes are capable of penetrating into the similarly hydrophobic polyester fibre. This class of dyes has extremely poor solubility in water, for this reason, dispersing agent is added to the dyebath to maintain dispersion stability, especially in the case of high temperature dyeing [21]. Table 1, shows the relationship between K/S as a parameter for dye uptake and the concentrations of the dispersing agent used from 0 (no dispersing agent used) to 4% present in a dyebath, the K/S increase with increasing amount of dispersing agent applied.…”

Section: Resultsmentioning

confidence: 99%

The effect of dispersing agent on the dyeing of polyester fabrics with disperse dyes derived from 1,4-diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile

2013

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KEYWORDS1,4-Diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile (8), is synthesized by reacting ethyl cyanoacetate with ethyl amine to produce the amide 4, which when reacted with methyl propionylacetate, afforded compound 8. Compound 8 is then coupled with aromatic diazonium salts to give the corresponding arylhydrazono-1,4-diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile disperse dyes, 11a-d, whose structures were elucidated by using X-ray crystal structure determinations. A high temperature dyeing method was employed to apply these dyes for polyester fabrics. The relationship between dyeing properties and the concentration of dispersing agent present in a dye bath is evaluated.Disperse dyes Polyester fabrics Fastness properties Dispersing agent Sodium lignin sulfonate X-ray crystal structure determinations

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Section: Resultsmentioning

confidence: 99%

The effect of dispersing agent on the dyeing of polyester fabrics with disperse dyes derived from 1,4-diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile

2013

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“…However, if the molecular weight or polarity of the dye is low, the sublimation fastness is low because the diffusion rate of the dye from the center of the fiber to the surface during thermal aging is high. [ 22,24 ] Therefore, irrespective of alkaline hydrolysis, when thermal aging was performed after dyeing with C.I. Disperse Blue 56, all polyester fabrics showed decreased Δ E , K/S, b*, C*, and an h angle of 270°.…”

Section: Resultsmentioning

confidence: 99%

“…As for their color fastness to light, color change arises when electron transition occurs with the absorption of light by the dye. [ 22,26 ] As shown in Table S3 of the Supporting Information, the polyester fabrics dyed with C.I. Disperse Blue 56, including an anthraquinone backbone, showed higher light fastness than the fabrics dyed with C.I.…”

Section: Resultsmentioning

confidence: 99%

Colorful Fluorine‐Free Superhydrophobic Polyester Fabric Prepared via Disperse Dyeing Process

Park

2020

Adv Materials Inter

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Superhydrophobic fabrics suffer from issues, such as poor breathability, surface color and handle changes, and toxicity because of additional chemical coating. Therefore, to resolve these issues, colorful fluorine‐free superhydrophobic polyester fabrics are prepared by controlling the conditions of a conventional disperse dyeing process. Alkaline hydrolysis, a pretreatment process in the dyeing process, is modified to create nanocraters on the surface of microrough polyester fabric. Then, the hydrolyzed polyester fabric is dyed with two different dyestuffs accompanied by thermal aging to lower the surface energy. The developed polyester fabrics become superhydrophobic and show the static contact angles over 160° and the shedding angles below 10°. Furthermore, the superhydrophobic polyester fabric exhibits improved color fastness as well as water vapor transmission rate and air permeability, while the handle properties of the alkaline‐hydrolyzed polyester fabric remain unchanged after dyeing and thermal aging. Finally, the self‐cleaning ability of the developed fabric is demonstrated by perfectly removing silicon carbide particles from its surface. Therefore, the developed fluorine‐free and superhydrophobic polyester fabric not only has color but also is nontoxic and environmentally friendly and can be readily recycled as it has no coated chemical to be removed. Thus, it has great potential for practical applications.

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“…Surface complexation is the main mechanism at a lower iron doses. Negative particles are able to adsorb with the presence of cations which produces the precipitate of metal salt with the constituent ions [20] and the formation of surface hydroxide occurs as a consequence. As the coagulant increases, the complex surfaces and the precipitates also increase until they becomes saturated.…”

Section: Fig 2 -The Effect Of Different Ph Values On the Reduction Omentioning

confidence: 99%

Combination of Iron Chloride and Polyacrylamide as Coagulant-Flocculants to Remove Pollutants in Dye Wastewater

Ishak¹,

Murshed²,

Ismail³

et al. 2019

IJIE

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Dyeing with Disperse Dyes

Cited by 38 publications

References 45 publications

The effect of dispersing agent on the dyeing of polyester fabrics with disperse dyes derived from 1,4-diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile

The effect of dispersing agent on the dyeing of polyester fabrics with disperse dyes derived from 1,4-diethyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile

Colorful Fluorine‐Free Superhydrophobic Polyester Fabric Prepared via Disperse Dyeing Process

Combination of Iron Chloride and Polyacrylamide as Coagulant-Flocculants to Remove Pollutants in Dye Wastewater

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