• Journal of the Korean Society of Clothing and Textiles
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• v.45 no.6
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• pp.1035-1051
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• 2021

This study compares the strength properties of Jumchi-Hanjis dyed with 70% and 100% persimmon juice concentrations and undyed Jumchi-Hanjis. The Juumchi-Hanjis were made from Dakjis (mulberry papers), which were mixed with different ratios of fibers from paper mulberries originating in Korea and Thailand, including wood pulp from Canada. Research results showed that tensile, wet tensile, and bursting strengths of Jumchi-Hanjis dyed with 70% concentration were higher than those of undyed Jumchi-Hanjis. However, the tearing strengths of the dyed Jumchi-Hanjis were lower than those of undyed Jumchi-Hanjis. The wet tensile strengths of Jumchi-Hanjis dyed with 100% concentration were higher than those of dyed with 70% concentration. The increase and decrease of tensile, tearing, and bursting strengths depending on persimmon juice dyeing differed as per the mixing ratio of the raw materials of Jumchi-Hanjis. Dyeing with 100% persimmon juice concentration tends to be more useful than 70% to increase the tensile (MD) and wet tensile strengths of Jumchi-Hanjis containing only Korean mulberry fibers (90%) and wood pulp (10%) as raw materials. Dyeing with 100% concentration tends to be less useful than 70% to increase the tensile, tearing and bursting strengths of Jumchi-Hanjis with high proportions (90% or 60%) of mulberry fibers from Thailand.

• The Korean Journal of Community Living Science
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• v.15 no.1
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• pp.27-33
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• 2004

Natural dyeing means coloring with dyes extracted from plants, minerals or animals found in nature. Natural dyeing provides calm and natural colors; it has antibacterial and deodorizing qualities; and the dyeing process is environmentally friendly. This study extracted natural dyes from young fruit by thinning out the superfluous fruits of Naju pear trees, and then examined its dyeing properties, the optimal dyeing conditions, and its color fastness for practical use. The results indicated that dyeing is ideal when it had Cu mordant treatment (5% concentration at 9$0^{\circ}C$, pH 4) for 50 min. The color fastness of natural dyes with Cu mordant treatment was very excellent after rubbing and dry cleaning, and also good after exposure to perspiration, light and washing.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.3
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• pp.472-479
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• 2010

The dyeing properties of mulberry fiber/cotton blended fabric with Inonotus obliquus are studied through the investigation of the effects of dyeing conditions, such as the concentration of Inonotus obliquus extract colorants, dyeing temperature, time, and pH values on dye uptakes (K/S). In addition, the effects of mordant on the dye uptakes and antibacterial activities are investigated. The results are summarized as follows. The dye uptakes of dyed fabric increased gradually with an increase concentration of Inonotus obliquus extract colorants, the K/S value was the highest when the dyeing temperature was $60^{\circ}C$ for a duration of 60 minutes. As the pH value of the dyeing solution changed to more acidic, the dyeability of the, fabric was improved. The K/S value recorded the highest at pH 3. The antibacterial activities of dyed and unmordanted mulberry fiber/cotton blended fabric showed a high Staphylococcus aureus reduction rate.

• Textile Coloration and Finishing
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• v.8 no.1
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• pp.15-25
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• 1996

Wool fabric and merino wool top were dyed with two dyes, C.I. Acid Red 13 and C.I. Direct Blue 1 in presence of hydrogen peroxide/glyoxal redox system at various conditions such as dyeing time, temperature and redox concentration. The pH of dye bath was 4.5 in buffer solution of $KH_{2}PO_{4}$ (0.1mol/1)/$Na_{2}HPO_{4}$ (0.1mol/1). Also dyeing of cotton fabric was carried out with C.I. Direct Blue 1 in absence or presence of redox system. The color depth(K/S) increased with redox concentration and dyeing temperature. The increases in dyeing rate and equilibrium dye exhaustion of Acid Acid 13 and Direct Blue 1 on wool fiber and fabric in the present of hydrogen peroxide/glyoxal have been caused by decreasing in pH value during dyeing process which due to the decomposition of hydrogen ion in glyoxal with the assistance of hydrogen peroxide. But the decreases in exhaustion of Direct Blue 1 on cotton may be attributed to repulsive interac ion between salt and salt.

• Textile Coloration and Finishing
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• v.28 no.3
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• pp.195-207
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• 2016

In this study, we examined the influence of the pigment characteristic and dyeing condition on dyeing properties and functionality by using Perilla Frutescens L. Britt extracts, in which ethanol, distilled water and NaOH solution were used as 3 different solvents. Changes in dyeing conditions include variations in dye concentration, dyeing temperature, time and pH on dye uptake, and K/S values were compared according to these changes. Additionally, color changes were observed according to the use and types of mordant. Ultraviolet-visible spectrum was utilized to investigate the pigment characteristic, and as a result, chlorophyll was identified in ethanol extract, whereas tannin was identified both in distilled water extract and NaOH solution extract. By using FT-IR analysis, these tannins in distilled-water-extract and NaOH solution extract were verified to be hydrolyzable tannin. When dyeing silk, dye uptake increased as dye concentration, dyeing temperature and time increased, while it decreased as pH of the extract increased. Fabrics dyed without a mordant produced Y-series colors, and fabrics dyed with mordants showed various colors depending on the mordant types. Even though color fastness to washing and light was unsatisfactory, fastness to rubbing and perspiration showed relatively high grade. Moreover, deodorant ability of dyed fabric improved.

• Fibers and Polymers
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• v.6 no.1
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• pp.35-41
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• 2005

Research and development of nano fiber products is very active over the world. Physical characteristics and dyeing properties of nylon 66 nano fiber were investigated in this study. X-ray diffraction, DSC, analysis of amino end group, and water absorption were performed to get information concerning physical properties of nano fiber. Nylon 66 nano fiber was dyed with high molecular mass acid dyes. Effects of dyeing temperature, pH of dyeing solution, and concentration of acid dyes on dyeing properties such as rate of dyeing and the extent of exhaustion, were examined and compared to those of regu­lar fiber. It was found that nano fiber adsorbed acid dyes at lower temperature, got rapidly dyed, and its extents of exhaustion at specific dyeing temperature were higher than regular fiber. It was also observed that nano fiber could adsorb a large amount of acid dye without a significant loss in the extent of exhaustion. Washing fastness of the dyed nano fiber was lower by $1/2\~1$ grade, light fastness by 1 grade than the dyed regular fiber.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.12 s.159
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• pp.1708-1713
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• 2006

The purpose of this study is to investigate the efficacy of juglone, which shows hish affinity to wool, for hair dyeing as a natural dye. Before dyeing hair with juglone, virgin hair was bleached by a conventional method using hair shops in the city. In order to study the dyeing properties of juglone on hair, the effects of dyeing conditions on dye uptake, color, tensile strength, and morphology were investigated. And the effect of Fe-mordanting on color change was also investigated. Dye uptake changed marginally as dye concentration increased in the range of 0.02-0.04g. Dye uptake increased progressively is dyeing time increased in the range of 10-20 min. Juglone produced YR colors on hair and the color of dyed hair got duller as juglone concentration increased. The hair was little damaged by bleaching, but cuticles were melted and stripped away by dyeing for longer time. Tensile strength retention decreased up to 65% at 20 min dyeing. Simultaneous mordanting with Fe did not improved dye uptake, but led to darker brown color compared with unmordanted hair.

• Textile Coloration and Finishing
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• v.20 no.2
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• pp.38-46
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• 2008

PET fabrics were cationized via photografting under continuous UV irradiation with a cationic monomer. The grafted PET was dyed with three acid dyes. Effect of dye concentration, dyeing time, temperature and pH on acidic dyeing of the cationized PET fabrics was assessed to find optimal dyeing condition. The cationized fabrics was successfully dyed at $75^{\circ}C$ under pH 5.5. However the dyeing sites of the grafted fabrics were nearly occupied above 5%owf dye concentration and the rapid exhaustion of the anionic dyes was observed. The dyeability of the cationized PET fabrics was increased proportionally with increasing percent grafting because of the introduction of ionic attraction between quaternary ammonium groups and acid dyes. Lower dyeability both at alkaline and pH 3 condition attributed to negative zeta potentials of the grafted fabrics and the reduced charge of the acid dyes respectively.

• Journal of the Korean Society of Clothing and Textiles
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• v.24 no.7
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• pp.1025-1034
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• 2000

Cotton differs from polyester in physical and chemical properties. When cotton/polyester blends are dyed, water-soluble dyes are generally used for cotton and disperse dye for polyester. Thus, two bath or one bath-two step dyeing process are usually accepted. These processes consume more energy and cost compared to a single step process. To save energy and cost, a single step dyeing and finishing is carried out with disperse dyes in the presence of a crossslinking agent. K/S values of the dyed fabrics were determined to examine the dyeing property of cotton, cotton/polyester, polyester fabrics dyed with disperse dyes in the presence of DMDHEU/PEG. The concentration of DMDHEU, molecular weight and concentration of PEG, curing time and curing temperature were varied.

• Textile Coloration and Finishing
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• v.13 no.2
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• pp.1-1
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• 2001

In the Previous studies, we reported about the synthesis of poly[3-methylence-3-methylenesodiumbisulfite-bis(4-hydroxypheny)sulfone] (PMSBPS) and their effect on the staining of direct dye on nylon in the dyeing of nylon/cotton union. The results showed that PMSBPS have good staining resist effect on nylon in the dyeing of nylon/cotton union. In this study, the staining resist effects of PMSBPS in varied dyeing process and method were investigated, and the fastness to washing, light, and rubbing of the deed N/C unions was tested. The results are as follows ; 1. In the two bath two step method, the staining of direct dye on nylon was decreased with the concentration of PMSBPS, and the fastness to washing, light, and rubbing of the dyed N/C unions were increased by addition of PMSBPS. 2. In the one bath two step method, optimun concentration of PMSBPS was 4% 0.w.f..