• Fashion & Textile Research Journal
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• v.13 no.5
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• pp.797-805
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• 2011

This study was carried out to investigate dyeing characteristics of CDP(cation dyeable polyester)/silk knitted fabrics with disperse type cation dyes/acid dyes by one bath dyeing method in comparison with two bath dyeing method in the interests for rationalization of the dyeing process. The apparent color depth(K/S) of the disperse type cation dyes with CDP and that of acid dyes with silk decreased slowly with increasing pH values of dyebath with the exception of sharp decrease at alkali region for CDP. The contamination behavior of CDP by the acid dyes and that of silk by the disperse type cation dyes decreased with progressing of dyeing. The migration ratio(%) of the disperse type cation dyes with CDP is low compared with that of acid dyes with silk. The sediment in mixed dying solution of disperse type cation dyes and acid dyes remarkably less compared with that of regular type cation dyes and acid dyes at $100^{\circ}C$ regardless applying of preventer agent of precipitation. When CDP/silk knitted fabrics was dyed with by with mixtures of disperse type cation dyes/acid dyes one bath or two bath dyeing method, the characteristic of reflectance spectra of CDP components were greatly influenced by disperse type cation dyes and that of silk components by acid dyes. It was confirmed that K/S values of each components of CDP/silk knitted fabrics dyed by one bath dyeing method decreased slightly compared with two bath dyeing method.

• Textile Coloration and Finishing
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• v.20 no.1
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• pp.22-27
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• 2008

Sulfadiazine and silver sulfadiazine are well-known bactericidal agent routinely used clinical settings. Antimicrobial acid dyes were synthesized by introducing sulfadiazine or silver sulfadiazine and applied on nylon fabric. The Chemical Structure of the Synthesized dyes was identified by HPLC-mass. The dyeability of synthesized acid dyes for nylon fabric was similar to commercial acid dyes. Resistance to washing, rubbing and lightfastness were good. Nylon fabrics dyed with synthesized acid dyes had good antimicrobial properties. Durable antimicrobial properties after 20 times washing have shown good result that reduction ratio of colonies, is 99.9 %. Mixed dyeing were carried out using commercial acid dyes(leveling type) and synthesized dyes. The mixed dyeings have also shown good antimicrobial properties.

• Fashion & Textile Research Journal
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• v.7 no.3
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• pp.339-345
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• 2005

It is difficult to dye nylon/viscose rayon mixture fabrics by one-bath one-step dyeing method, because acid dyes and reactive dyes require acidic dyebath for adsorption and alkaline dyebath for fixation respectively. In order to overcome the disadvantage of the conventional two bath two step dyeing method of nylon/viscose rayon mixture fabric, it was pretreated with cationizing agent containing chlorohydrine group in aqueous solution of sodium hydroxide. The pretreated nylon/viscose rayon mixture fabrics produced cationized fabrics that could be dyed with acid dyes and reactive dyes under neutral condition. This study was carried out to investigate dyeing possibilities, surface reflectance spectra and color characteristics of cationized nylon/viscose rayon mixture fabrics with acid dyes and reactive dyes in a non-electrolytic and neutral dyebath by one bath one step dyeing method.

• Textile Coloration and Finishing
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• v.16 no.5
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• pp.1-7
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• 2004

Because acid dyes and reactive dyes require acidic condition for adsorption and alkaline condition for fixation respectively, it is difficult to dye nylon/cotton blends in one-bath one-step dyeing method. In this paper we tried to find out the suitable dye and dyeing condition for one-bath one-step dyeing of nylon/cotton blends. MNT type reactive dyes showed higher exhaustion on cotton as compared with MCT type dyes at neutral pH, which means that the MNT type reactive dyes are preferable for one-bath one-step dyeing method. The optimum condition for one-bath one-step dyeing of nylon/cotton blends was found to be pH 7. Wash fastness of fabrics dyed with half-milling type acid dyes was superior to that of fabrics dyed with levelling type acid dyes, when MNT type reactive dyes were used together.

• Textile Coloration and Finishing
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• v.20 no.5
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• pp.14-22
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• 2008

The present paper focuses on the application of commercial acid dyes and wool reactive dyes to casein protein fabric. Nine acid dyes and six wool reactive dyes were compared their dyeing properties as well as color fastness. The exhaustion yields were higher than 80 % which dramatically increased at pH 3. Excellent wash fastness was obtained with metal-complex acid and wool reactive dyes. Both light and rubbing fastness were overall good, but perspiration fastness was comparatively poor.

• Textile Coloration and Finishing
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• v.10 no.3
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• pp.1-9
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• 1998

The dyeing properties of modified wool were examined with a series of acid, reactive and cationic dyes. Cationic agent and sulphamic acid were applied to wool fabric for dye assist and resist effect. Wool pretreated with cationic agent showed better uptake of acid and reactive dyes than did untreated wool. On the other hand, the dyeing behavior of wool pretreated with sulphamic acid was found as follows : Acid dyes were poorly resisted with a hydrophobic mechanism but acid dyes were strongly resisted with a hydrophilic mechanism. Reactive dyes were also found to be effectively resisted. Sulphamic acid introduces sulphonate group into wool's structure, it has increased better uptake of cationic dyes than untreated wool. The degree of differential uptake depends on the level of pretreatment and produces a variety of tone-on-tone and multicolor effect in piece dyeing.

• Textile Coloration and Finishing
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• v.15 no.5
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• pp.285-293
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• 2003

Waterborne PU membrane was prepared from waterborne PU dispersion solution to investigate physical and staining properties. The staining properties of waterborne PU membrane with acid dyes and disperse dyes were observed. The physical properties of the PU membrane were investigated by X-ray diffraction and IR spectroscopy. The staining property of waterborne PU membrane for azo acid dyes is better than that of disperse dyes. X-ray diffraction peaks sharpened and tensile strain and stress increased with heat setting temperature.

• Journal of Fashion Business
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• v.14 no.3
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• pp.116-127
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• 2010

Metal acid dyes are usually used to dye wool fabric to achieve high concentrated color and strong color fastness. However, metal acid dyes contain lots of heavy metal. That causes not only environmental pollution but also diseases to human. In this study, wool reactive dyes instead of metal acid dyes for wool, which are environmental friendly, are compared and analyzed in the evaluation system of their harmfulness, containing heavy metals and examined exhaustion rates and dyeing characteristics.

• KSBB Journal
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• v.15 no.1
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• pp.66-71
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• 2000

The results for decolorization of various dyes by Geotrichum candidum (KCTC 6195) showed that optimal initial pH, temperature and glucose concentration were 6, $30^{\circ}C$, and 30g/L. Light had no effect on the cell growth and decolorization efficiency. All the dyes - dispersive dyes, acid dyes and reactive dyes - used on the solid medium were also decolorized in a liquid medium, although the decolorizing rates varies depending on the dye structure. An energy source was essential for cell growth or decolorization because textile dyes did not support growth. The percentage of decolorization of Acid orange 10 was shown to be 91% for initial conc. 100ppm and 84% for initial conc. 500ppm. The biomass could adsorb the dyes such as Acid red 1;19.8%, Acid red 88; 73%, Acid orange 10; 12.1% Reactive blue 19; 14.6%. The dye removal was due to the sorption of dye to the fungal biomass as well as some extracellular enzymes. Color removal was enhanced up to 97% within 3 days by the addition of glucose after 2 days incubation.

• Textile Coloration and Finishing
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• v.6 no.3
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• pp.60-66
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• 1994

With the view of studying on the dual adsorption mechanism of acid dyes in connection with the structural difference of silk fibroin, silk fiber and silk fibroin memberane were used for equilibrium dyeing at $60^{\circ}C$, $70^{\circ}C$, $80^{\circ}C$ and pH 3.2, pH 5.0. The dyes used were C.I.Acid Orange 7 and C.I.Acid Red 88 introduced aromatic hydrocabon into Acid Orange 7. From the adsorption isotherm experiment, the total uptake of dyes can be described by Langmuir sorption and Nernst partition. Nernst partition. Nernst partition coefficient $K_1$ decrease of crystalline regions and orientation. The saturation value S of Acid Red 88 were large than total amino group contents and it was attributed it hydrophobic bond. On the other hand, the standard afficity and enthalpy were increased with the in crease of hydrophobic part of dyes. Both $k_1$ and $K_2$ were decreased with the increase of pH, but $k_2$ were more effected than $K_1$.