• Textile Coloration and Finishing
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• v.18 no.3 s.88
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• pp.10-15
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• 2006

In this research, we studied the dyeing properties of PET fibers in terms of $TiO_2$ contents, fiber strength and spinning oil which may cause barre' effect. The effect of $TiO_2$ contents in the fibers had no influence on the dye uptake. However, the reflectance(%) behaviors showed the different visual properties as $TiO_2$ contents in the fibers. The other factors could be considered as strength and spinning oil which also revealed difference on the dye exhaustion. The experimental results showed that $TiO_2$ contents within the fibers influenced reflectance(%) behaviors. Furthermore, fiber strength and spinning oil could be considered other major factors to impart the dyeing irregularity and barre' effect.

• Textile Coloration and Finishing
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• v.22 no.4
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• pp.332-340
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• 2010

Nowadays natural textile materials should cope with the global warming. Soft, thin and light angora fibers which have two components. One is spiky hair and the other is soft hair. The spiky hairs have a disadvantage of pilling out. The soft hairs have promising properties comparable to cashmere goat hairs, which is cheap compared to very expensive cashmere goat hairs. In this study, we investigated the dyeing properties of angora/PET, Nylon blend fabrics to acid dyes and reactive dyes including various series of acid dyes and reactive dyes for the dyeing of the blended super soft angora fabrics and their potential for deep shade dyeing effects. Our focus is to get a relation between various kind of blend and their dyeability.

• Textile Coloration and Finishing
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• v.2 no.1
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• pp.21-30
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• 1990

In order to obtain high dye uptake initially, polyethylene terephthalate (PET) filaments were dyed with C.I.Disperse Orange 3 and Red 1 in mixed solvents of tetrachloroethylene acidic solvent, ethyl alcohol and tetrachloroethylene basic solvent, DMF. The dyeing behavior in the mixed solvent of tetrachloroethylene and basic solvent, DMF, the initial uptake of disperse dyes increased rapidly. The shrinkage of PET increased when the solubility parameter values of PET fiber and mixed solvent approached graduately.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2008.04a
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• pp.86-88
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• 2008

Dyeing and fastness properties of direct spun type PET microfiber velvet woven fabric have been compared with those of regular PET velvet woven fabric. They showed different exhaustion and rate of dye uptake. The build-up properties of disperse dyes on direct spun type PET microfiber velvet woven fabric were relatively poor than regular PET velvet woven fabric. The wash fastness properties of disperse dyes on regular PET velvet woven fabric were similar to direct spun type PET microfiber velvet woven fabric.

• Textile Coloration and Finishing
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• v.10 no.1
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• pp.25-32
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• 1998

In the prior study, we found that the dye uptakes of C. I. Disperse Violet 1 on PET in hexane and cyclohexane were higher than those in the other solvents. Therefore, in this study, the dye uptakes and the partition coefficients in alkanes having different number of carbon atoms were obtained and their relationship to the solubilities of the dye in alkanes was also investigated. As the number of carbon atoms of alkanes increases, solubility of the dye increases but the dye uptake decreases. This is due to the fact that the hydrophobicity of alkanes become relatively strong as increasing the number of carbon atoms. It was also found that the dye uptakes in iso-alkanes were larger than those in normal alkanes. This is because that the branched alkanes(iso-alkanes), judging from the tendency of lowering solubility and increasing dye uptake as decreasing the number of carbon atoms of alkanes, behave like the alkanes with less number of carbon atoms rather than the alkanes with the same number of carbon atoms. The logarithmic plot of the dye uptakes vs. the solubilities of the dye showed that the dye uptakes are linearly and inversely proportional to the solubilities. This is in good accordance with the results of the prior study. The heat of dyeing was also calculated from the equilibrium adsorptions at various temperatures. It seemed that the dyeings of PET by C. I. Disperse Violet 1 in nonane, decane, iso-pentane and iso-octane were rather endothermic processes. Dyeing rates in alkanes were somewhat delayed unlike general appearances in solvent dyeing.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.9
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• pp.532-540
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• 2019

PET microfibers with various diameters (0.5, 0.2, 0.06, and 0.01 dpf) were dyed with a dispersed dye (C.I. Disperse Blue 56) at various temperatures. The dyeing process was conducted under infinite dyebath conditions at constant temperatures. The effects of the dyeing temperature and diameter on the partition coefficient, affinity, and diffusion coefficient of disperse dyes were studied. The curve of isotherms was fitted well to Nernst-type model in a large range of initial dye concentrations. At the same temperature, the partition coefficient and affinity decreased with increasing sample diameter due to the increase in surface area. At all deniers, the partition coefficient and affinity decreased with increasing temperature because the dyeing process is an exothermic reaction. In addition, the decrease in radius of the sample gives rise to a decrease in the heat of dyeing. The fine diameter of the sample resulted in an increased surface area but decreased space between the microfibers. Consequently, decreasing the diameter of the microfibers leads to a decrease in the diffusion coefficient. At the same diameter, the diffusion coefficient increased with increasing temperature because of rapid dye movement and the large free volume of the sample inside. In addition, thermal dependence of the diffusion coefficient increased when the diameter of the sample increased.

• Proceedings of the Korean Fiber Society Conference
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• 2000.04a
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• pp.225-228
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• 2000

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2008.04a
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• pp.80-82
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• 2008

The distributions of 3 disperse dyes with different molecular structures among polyurethane (PU) and polyester (PET) in dyeing PET-PU blend and which dye structure contaminated less PU portion were studied. The amounts of dyes left substrates after reduction clearing and washing were measured to prove which dye structure had an effect on improving washing fastness. Disperse dye with high molecular weight showed similar distribution onto PU and polyester by dying both substrates with similar rate and less contamination to polyurethane while other dyes distributed to PU faster than to PET had.

• The Journal of Natural Sciences
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• v.9 no.1
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• pp.169-175
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• 1997

In this study, it was investigated about dyeability, light-fastness, wash-fastness and tensile strength in PET fiber using the effective carrier solvent such as benzyl alcohol, benzaldehyde and acetophenone. As a results, dyeability in mixed solvent was better than that of single solvent. And dyeability in mixed solvents of benzyl aldehyde and acetophenone was of them. But effective carrier action was resulted in decrease of properties such as light-fastness and tensile strength of PET fiber after dyeing.

• Textile Coloration and Finishing
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• v.7 no.1
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• pp.1-9
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• 1995

In order to improve dyeability of poly(ethylene terephthalate)(PET) micro filament fabrics, the effect of the prior oxygen low temperature plasma on the subsequent dyeing(deep dyeing, printing) was examined in various conditions. The apparent concentration of dyed PET micro filament fabrics was increased by $O_{2}$plasma treatment. Higher discharge power levels and higher reactor pressure values created more significant effect. The wettability was significantly increased by $O_{2}$ plasma treatment. Therefore, it is predicted that introducing hydrophilic group on the surface of material can improve the apparent concentration of PET micro filament fabrics.