• 한국의류학회지
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• 제48권3호
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• pp.543-562
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• 2024

This study used persimmon juice, shuliang, and mud to develop the color of hanji fabrics. Persimmon juice and shuliang were used to perform single and mixing dyeing with heat treatment using the pad-dry-cure (PDC) method. Next, mud dyeing was performed, and the hanji fabrics dyed with persimmon juice and shuliang were developed into Yellow Red (YR) Munsell colors with very low values and chroma. Through scanning electron microscopy, the persimmon juice and shuliang were observed to be evenly treated on the hanji fabrics using the PDC method. Furthermore, the presence of iron ions in the dyed fabrics was confirmed using inductively coupled plasma-mass spectrometry analysis. The stiffness of the fabrics dyed with persimmon juice was the greatest, while it gradually decreased for the fabrics treated with mixing and mud dyeing. With mixing dyeing, the colorfastness to washing improved to grade 4, whereas with mud dyeing, the colorfastness to alkaline sweat greatly improved to grade 4~4-5. Based on these findings, this study confirmed that it is possible to develop hanji fabrics with differentiated textures and colors while ensuring practical colorfastness through mixing and mud dyeing.

• 패션비즈니스
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• 제9권2호
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• pp.57-70
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• 2005

Chitosan pre-treatment of the fabrics prior to the dyeing processes has been reported to increase the uptake of natural dyestuffs. In this study, cotton, nylon, and PET fabric specimens were pre-treated with chitosan prior to the dyeing (Method 1), or the state of chitosan acid salt formation, coated on the yarn surface, was destroyed prior to the dyeing process by alkaline neutralization process (Method 2). In case of the acid salt formed cotton (Method 1), treated fabrics showed more yellowish color component of cochineal, while alkali-treated (Method 2) cotton showed more uptake of bluish color of cochineal.

• 한국의류산업학회지
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• 제19권5호
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• pp.620-625
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• 2017

In this study, the dyeing conditions(temperature, time, concentration) are changed from various conditions on wool fabrics by using corydalis tuber extract in order to develop new natural dyes. The purpose of this study is to improve the dyeability, color fastness, and functionality and to derive optimal dyeing conditions by comparing and analyzing the changes of K/S values and surface color by dyeing pH changes, mordant method, and mordant type. As a result of the experiment, the optimum dyeing condition of the wool fabrics is shown dyeing temperature:$80^{\circ}C$, dyeing time:90min, dyeing concentration:100%. The dyeability by pH variants of corydalis tuber extract indicates that K/S values is higher alkaline than acidic. The mordant method of corydalis tuber extract showed pre-mordant has high K/S values. In terms of color fastness, marked improvement has not been shown despite of mordant treatment on wool fabrics. In particular, color change of color fastness to washing, color fastness to light indicates the low fastness. In addition, the functionality such as antibacterial activities and deodorization can be given at dyeing with corydalis tuber extract thus it is expected to be applied to underwear or apparel products for the elderly and infirm and children with weak skin that required high functionality.

• 패션비즈니스
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• 제7권5호
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• pp.83-100
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• 2003

It has been known that the chitosan pre-treated fabrics can be dyed without the aid of mordanting process. It is due to the fact that chitosan treatment increases the dye uptake. However, the effect of chitosan on the dyeing mechanism has not been elucidated thus far. Following explanations have been presented regrading the action of the chitosan on the dyeing mechanisms: 1. Chitosan absorbs dyestuffs and facilitates dyeing since the chitosan itself has a good affinity toward dyestuffs. 2. Chitosan acts as a metallic mordant between the fiber molecule and dyestuff. 3. Fiber molecules and chitosan form a coordinate covalent bond. This study aims the quantitative investigation on the effect of the chitosan and the effect of sequence of the mordanting, pre-mordanting or post-mordanting, on the dyeing of the fabrics. Cotton fabrics and acylic fabrics were pre-treated with chitosan before dyeing with cochineal dyestuffs. Method 1: Fabrics were, firstly, mordanted with Al, Sn, Cu, and Fe; mordanted fabrics were, secondly, treated with chitosan; mordanted and chitosan-treated fabrics were, thirdly, dyed. Method 2: Fabrics were, firstly, treated with chitosan; chitosan-treated fabrics were, secondly, mordanted with Al, Sn, Cu, and Fe; these were dyed then. Method 2 gave distinguished specific color development with darker shade. Apart from this, chitosan-treated fabrics yielded darker shade compared to the pre-mordanted fabrics without chitosan-treatment.

• 한국염색가공학회지
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• 제12권1호
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• pp.44-51
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• 2000

The conventional one bath exhaust dyeing system of nylon]/cotton blends with acid dye/direct dye involves a lot of neutral salt which affect dyeability of acid dyes. Because of conventional one bath exhaust dyeing system of nylonl/cotton blends with acid dye/direct dye needs acid dyes adjusted at a neutral liquor, suitable acid dye is limited. To improve dyeing property of nylon/cotton blends, cotton component was pretreated with cationizing agent containing chlorohydrine group in aqueous solution of sodium hydroxide. This study was carried out to investigate dyeing possibilities of nylon/cationized cotton blends with acid dye/direct dye in a non-neutral salt dyebath by one bath two step method. The concentration of direct dye was 1.0%, 0.7%, 0.3%o.w.f. respectively at a non, 1%, 3%owf of reserving agent for being almost equal color strength between nylon and 3% cationized cotton when nylon/3% cationized cotton blends was dyed with acid dye/direct dye at concentration of acid dye(1%o.w.f.) by one bath two step method.

• 한국염색가공학회지
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• 제18권6호
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• pp.1-9
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• 2006

The purpose of this study is to investigate the dyeability, antibacterial activity on silk and rayon fabrics dyed with cochineal. The result are as follows; 1. The K/S value of silk fabric was higher than that of rayon fabric. 2. The optimum conditions are mordant concentration $0.5{\sim}1%$, dyeing material concentration 2.0%(o.w.f), dyeing temperature $60^{\circ}C$, PH 3 and dyeing time 30minutes. 3. Pre-mordanting method had higher dyeing absorption than post mordanting method in case of silk and rayon fabrics. 4. The antibacterial activity of dyed silk fabrics were higher than that of dyed rayon fabrics and the antibacterial activity was increased by mordanting. 5. The lightfastness and perspiration fastness of silk fabric were improved but these of rayon were not. Dyeing fastness was improved by Fe mordanting on both fabrics.

• 한국염색가공학회지
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• 제3권2호
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• pp.16-24
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• 1991

The textile fabric have the functions of sanitation, decoration, wearing style and washing in the practical use. Among various texitle fiber, silk has less utilities than synthetic fiber in practical use although silk has good benefits of the high quality. Thus no textile fiber, neither natural nor synthetic, has all the functions. In this sence, many blend yarns have been improved various functions of fabric. However, this has been disturbed with the problem of dyeing, especially in the case of blend fabric of silk. In this study, we dyed silk/PET blend fabric in one step useing one bath dyeing method by acid dyes/disperse dyes. The results of the experiments can be summarized as follows; 1) Yellow index of silk fabric treated at $130^{\circ}C$ increased about 7.8 (color difference 4.5 NBS) and whiteness decrease about 5%. 2) Both elongation and tensile strength of silk fabric treated at $130^{\circ}C$ of pH 5-6 decreased about 10% and tensile strength of silk spun yarn treated at $60^{\circ}C$ of pH 10 have little changed. 3) While silk/PET blend frbric dyeing, silk soiling of disperse dyes causes from difference of dyeing rate and degree of silk soiling with dyes. 4) Fastness and soiling of silk/PET blend fabric dyed by one bath dyeing method of acid dyes/disperse dyes was same as two bath dyeing method.

• 한국염색가공학회지
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• 제29권3호
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• pp.171-179
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• 2017

This study was to investigate the practicality and functionality of water lily(Nymphaea tetragona) leaves as a natural dye resource while searching for various dyeing methods to utilize them. Effect of dyeing condition including methanol ratio of dyebath, dyeing temperature and time, mordanting method, etc were investigated. Colorants were prepared by extraction in methanol and followed drying process. When composing 30% of methanol in the dyebath, better dyeuptake and uniform dyeing were resulted. Pre-mordanting method gave better results in terms of dye uptake than post-mordanting method on the wool fabrics. Fe and Ti were effective for increasing the dye uptake on the silk fabrics. Depending on mordant type and mordanting method, the dyed fabrics got various color showing green, khaki, brownish yellow, dark brown, dark gray and so on. As for color fastness, the silk fabrics dyed with water lily extract showed relatively high rating in light fastness(3~4, 4~5 rating), washing fastness(4~5, 5 rating), and rubbing fastness(4, 4~5 rating). The silk and wool fabrics dyed with water lily leaves extract showed excellent antimicrobial activity over 98% of bacterial reduction rate against Staphylococcus aureus and Klebsiella pneumoniae. It was confirmed that water lily leaves can be used as a natural dye resource for dyeing wool and silk fabrics because its colorants showed excellent affinity and antimicrobial functionality as well as good colorfastness.

• 한국의류학회지
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• 제8권3호
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• pp.1-7
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• 1984

Traditionally dyeing fabrics with pigment extracted from carthamus flower was a popular method of obtaining red color in Korea. Such a method existed in several countries throughout the world before the synthetic dyestuff was developed. However, the traditional procedures of using natural products in obtaining colored materials are completely forgotten in modern Korea. The details of dyeing procedures fare not well documented in literature, either. In this study the method of extracting and dyeing with carthamus flower is reconstructed from Korean literature and actually carried out in laboratorf. The reconstructed method is compared with those of Japan, China, France, and Egypt, and the scientific basis of such an ancient tradition is discussed. Carthamus contains two kinds of coloring components : yellow carthamin and red carthamone. Water-soluble carthamin is first extracted by repeated washing and is usually used for the initial soaking procedure. Then carthamone is extracted in alkali solution by adding ashes of dried plants such as carthamus stalks and bean hull. Finally the solution of carthamone is made acidic by adding schizandra juice for dyeing on fabrics.

• 한국의류산업학회지
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• 제10권6호
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• pp.1045-1050
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• 2008

Developing of high technology, productivity of the fiber product has being rapidly increased and also various kinds of advanced treatment process lead consumer's needs to more high functional, clean and healthy goods. Moreover, increasing in the concern of eco-friendly material and processing, it has been getting popular that the dyeing method like as using natural dyes is more eco-friendly and natural-friendly treatment process. The method, used in this study, adhesion by binding with micro-capsulized natural material to fabric has low change in quality by external influence and high ability in spray effect by broken capsule which comes to pressure and friction when it dressed. Also it has wide application from natural fiber to synthetic fiber. The purpose of this study is development of multi-functional synthetic material with micro-capsulized Scutellaria baicalensis on PET. Moreover, it was driven by comparison of colormetric properties and fastness between regular dip-dyeing method and binding with micro-capsulized material method. Dye ability was arranged mostly low exhaustion but the PET treated by micro-capsule was more or less better than the dip-dyeing PET. Through the SEM(Scanning Electron Microscope) of PET treated by micro-capsule, it has good residence of capsules even after 5 or 10 times washing. Wash and light fastness was arranged some different grade by each condition but mostly high achievement and the micro-capsulized PET was more improved than regular dip-dyed PET.