• 한국의류학회지
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• 제37권4호
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• pp.590-597
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• 2013

This study examined the change in the dyeability of natural dyes on cotton fabrics by a PEI (polyethyleneimine) pretreatment instead of mordants. Cotton fabrics were treated with PEI and the changes in the dyeability were shown by measuring the amount of PEI on cotton fabrics. Samples treated with PEI were dyed with two natural polychromatic dyes with a different affinity to cotton fibers: Alizarin Red S and Curcumin. The changes in dyeability by three variables (time, temperature and concentration of dyes) on cotton fabrics were analyzed by the K/S value to define optimum dyeing conditions. Subsequently, the PEI treatment improved the dyeability of cotton fabrics with both dyes of low and high affinity to cotton fibers. Thus, PEI could be a suitable heavy metal mordant replacement.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2012년도 제46차 학술발표회
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• pp.26-26
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• 2012

The hydrophobic nature of the wool surface give rise to difficult penetration of dye molecules. Among all the methods of modification, graft polymerization is an attractive method to impart a variety of functional groups to a polymer. Grafting has been made by irradiating the light on the polymer in the presence of a solvent containing monomer. The energy source commonly used are high-energy electrons, X-rays, UV and visible light. UV irradiation is a relatively low-energy radiation in comparison with others since it has the least possibility to change bulk properties. In the present paper, a photo-reactive dye was synthesized from quinizarin by the reaction with methacryloyl chloride. The synthesized dye was continuously grafted onto wool fabric at room temperature by UV irradiation. Several key parameters including UV energy, dye concentration and pH have been examined to understand their influence on the photoreactive coloration.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 가을 학술발표회 논문집
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• pp.245-246
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• 2003

최근 정보통신 산업의 급속한 성장으로 평판 표시소자의 개발에 많은 관심이 모아지고 있다. 특히 이 중에서 액정 표시소자(LCD)의 수요는 급증하고 있으며 그에 관련된 부품 및 소재의 중요성 또한 강조되고 있다. LCD 부품 및 소재에서 가장 중요한 역할을 하는 편광필름은 일반적으로 PVA (polyvinyl alcohol) 또는 polyene 구조를 갖는 고분자 필름에 요오드를 염착시켜 사용되어 왔다. 본 연구에서는 PVA Film에 저온 플라즈마 처리를 함으로서 편광도와 투과도에 어떠한 영향을 미치는지에 대해 알아보고자 한다. (중략)

• 대한가정학회지
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• 제41권1호
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• pp.249-257
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• 2003

For the efficiency in extracting gromwell colorant, methanol, ethanol and aceton were used as solvents. Also, to compare the results when dyed in various conditions and on various fabrics, the ratio of water-dye mixture, pH, temperature, and varieties of fabrics -wool, silk, cotton, nylon, ramie- were selected. L, a, b, ΔE, munsell and K/S value of each sample was measured and compared for the practical use. Water-dye mixture of 5:5 ratio showed the optimum dyeability. Not to mention wool and silk, but also cotton showed a satisfying dying result at the acidity of pH4. As the temperature increased, the dyeability of all three fabrics improved greatly. Especially, wool showed the highest improvement in terms of dyeability as the temperature increased. K/S values for wool and nylon showed superior results to the others in the gromwell colorant. The resulting color turned out somewhat different depending on the solvents used and the sort of fabric that was tested on. When the gromwell colorant extracted with methanol or ethanol was applied, the color of fabrics came out as purple or purpleblue. When the colorant extracted with acetone was used, the color of fabrics came out to be redpurple. The colorfastness to light showed low glades regardless to whichever solvents were used. The grades of colorfastness to laundering were recorded low numerical values, and its record became even lower when the gromwell colorant extracted with aceton was applied. The staining grade of the colorfastness to laundering showed a good grade in the range of 4 to 5. All the dyed fabrics showed a excellent drycleaning fastness.

• 한국의류학회지
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• 제27권5호
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• pp.517-523
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• 2003

We studied the physical properties of silk fabrics after degumming, the dyeability and the color fastness of silk fabrics after degumming and sericin fixing. As the sericin was removed from silk fabrics, the rate of weight loss increased and both the abrasion resistance and the drape coefficient decreased. This means that the amount of the sericin remained in silk fabrics significantly affects the physical properties of silk fabrics. On the surface and the cross-section of silk fabrics, the silk fibers enclosed by the sericin seemed to be in a lump shape. Each fibroin strand, however, got scattered, as the process of degumming went through. The dyeability of silk fabrics degummed decreased at between 20$^{\circ}C$∼80$^{\circ}C$ the dyeing temperature, on the other hand, it significantly increased over 80$^{\circ}C$. The dyeability of the sericin-fixed silk fabrics was lower than that of the non-serin-fixed silk fabrics, to a little extent. The colorfastness of crocking in the dyed-silk fabrics was a little low and that of the sweat was much lower in a basic sweat. Especially, the colorfastness of the partially degummed silk fabrics was low, because the sericin was not stable in the condition of sweat. Therefore, the process of sericin fixing is essentially required, for the partially degummed silk fabrics and the process of degumming itself.

• 복식
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• 제14권
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• pp.133-144
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• 1990

The purpose of this study is to investigate the absorbance of the Shikonin, one of the major purple pigments, and the stability against the effect of light, $O_2$, and temperature. The effect of mordant and mordanting condition to color and color-fastness is compared and analysed through the color-fastness-test, color-difference value-test, and IR-test. The results were as follows; 1. The absorbance of Shikonin was examinated through 6 kinds of solutions and distilled water. Shikonin was absorbed by solutions rather easily than distilled water. 2. The light effect to Shikonin indicated that the solution with the light was more stable than that without it. 3. The effect of $O_2$ to Shikonin showed that the solution with the $O_2$ was more stable that without it $O_2$. 4. Shikonin -methyl alcohol solution was stable in $25^{\circ}C$. It was unstable in $60^{\circ}C$ and $100^{\circ}C$ with lowered absorbance and changed colors. 5. Color-fastness test to silk and cotton indicated washing color-fastness and perspiration color-fastness was more than 3 grade. But the light color-fastness and crocking color-fastness was low. 6. The comparison between non -colored sample and colored-sample showed the latter was better in fastness. 7. Mordant as $Alk(SO_4)_2{\cdot}24H_2O$ and $AlCl_3{\cdot}6H_2O$ was better than anything else in fastness. 8. Color-difference value-test indicated that the mordant which had the jade green color, the original purple pigment color, was the best in use. 9. The best way to extract the original purple pigment color was in $25^{\circ}C$, because extracted dyeing solution by Soxhlet had the bluish color.

• 대한환경공학회지
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• 제27권9호
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• pp.946-951
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• 2005

본 연구에서는 청정 호발공정의 하나로 플라즈마 처리를 사용하였다. 폴리에스테르(polyethylene terephthalate, PET) 직물에 가호된 폴리비닐 알콜(polyvinyl alcohol, PVA), 아크릴 호제(polyacrylic acid esters, PACL)과 이들의 혼합된 호제들을 질소($N_2$)와 산소($O_2$) 플라즈마로 처리하였다. 호제제거에 있어서 산소 플라즈마가 질소 플라즈마 보다 더 효과적이었으며, PACL 보다는 PVA 호제 제거가 더 우수하였다. 플라즈마 처리된 시료의 주사전자현미경(scanning emission microscopy, SEM) 사진을 통하여 호제들이 제거되었음을 직접 확인할 수 있었다. 산소 플라즈마 처리 후, 기존의 습식공정을 이용하여 폴리에스테르 직물을 호발하였다. 플라즈마로 처리하지 않은 직물과 비교하여 산소 플라즈마 처리된 직물의 호발폐수는 더 낮은 TOC, COD와 $BOD_5$ 값을 보여주었다. 이것은 플라즈마 처리가 직접적으로 호제를 제거할 수 있을 수 뿐 아니라 호제의 화학적 특성을 변화시킴으로서 이점을 제공할 수 있다는 것을 보여준다. 마지막으로, 플라즈마 처리에 의한 호발 공정이 폴리에스테르 직물의 염색성에 미치는 영향을 색차와 염색견뢰도를 측정하여 살펴보았다. CCM(computer color matching) 측색 실험 결과, 산소 플라즈마로 20분간 처리한 폴리에스테르 직물과 기존 습식공정으로 호제가 제거된 기준직물과의 색차값은 1 정도이었다. 이것은 다른 부수적인 공정 없이 플라즈마로 처리된 직물이 바로 염색공정에 사용될 수 있다는 것을 나타낸다. 또한, 플라즈마로 처리된 직물은 좋은 염색견뢰도 결과를 보여주었는데, 세탁견뢰도, 마찰견뢰도, 승화견뢰도, 일광견뢰도도 기준직물과 비교하여 같거나 더 우수하였다.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2012년도 제46차 학술발표회
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• pp.49-49
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• 2012

바닥재 자카드직물에 사용이 예상되는 LMP(low meltig polyester) 복합사는 사염 시 높은 수축율 및 열융착의 가능성 때문에 일반적인 폴리에스테르의 염색조건에서는 염색이 불가하다. 따라서 적정의 수축율 내에서 가능한 염색조건에 대해 고찰하였다. LMP 복합사는 웅진케미컬에서 생산된 Regular PET/LMP(75:25) 260d/48f 원사를 사용하였다. 수축율은 KS K 0215에 준하여 측정하였다. 염색은 E-type 및 S-type(Foron Dark Blue S-WF) 분산염료를 사용하였으며, E-type 중에서는 아조계(Lumacron Blue SERL 200%) 와 안트라퀴논계(Foron Blue E-BL 150)의 2 종류를 사용하였다. 염색된 시료는 현미경 단면사진을 이용하여 염료의 내부확산을 확인하였으며, 환원세정 전후의 K/S 값을 측정하였다. LMP원사의 수축율을 시험한 결과 $90^{\circ}C$에서 9% 정도의 수축율을 나타내어, $90^{\circ}C$ 이상에서는 사염이 어려운 것으로 나타났다. 따라서 염색온도는 $80^{\circ}C$와 $90^{\circ}C$로 하였다. S-type의 염료를 이용한 경우 $90^{\circ}C$에서 4일 이상 염색해도 염착이 이루어지지 않아 대상 염료에서 제외하였다. E-type 염료인 경우 아조계는 흡진율은 높았으나 내부 regular PET에의 확산이 매우 느리고, 안트라퀴논계는 상대적으로 확산이 빠른 것으로 나타났다. 안트라퀴논계 분산염료는 $80^{\circ}C$에서 내부로의 확산에 4일 이상이 소요되며, $90^{\circ}C$에서는 2일 이상이 소요되었다. 이 후 환원세정에 의한 K/S 값의 변화 및 마찰견뢰도를 시험하였으며, 환원세정 후의 섬유단면 사진을 통해 염료의 migration성을 평가하였다.

• 대한가정학회지
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• 제38권9호
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• pp.119-130
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• 2000

The purpose of this study was to confirm the possibility of screen printing with Natural dyes. The coloring matter such as sappan wood was used in order to obtain the colorant powder through the processes of extraction, low pressure concentration and the spray dry. After the screen printing on silk and cotton fabrics with colorant, K/S value changes of color and color fastness were measured. The main resets were as follows : 1. The viscosity of printing thickeners of sappan wood powder was about 15,200 cps, and the highest K/S value of the fabrics printed with sappan wood was obtained at 90$\pm$2$\^{C}$ of steaming temperature and 80 minutes of steaming time. 2. For the fabrics printed with sampan wood, adding of urea was not effective, since the more the concentration of urea increased, the more K/S values decreased. 3. For the natural dyes printing, the more the concentration of colorants increased, the more K/S values increased. In general, the K/S values of the printed fabrics were higher when treated with mordants rather than without mordants. Specifically, the λmax sappan wood was 520∼570 nm, and the K/S value was highest when treated with Cu mordant and lowest when treated with Sn. 4. Generally, the color fastness was relatively fair.

• 한국의상디자인학회지
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• 제19권2호
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• pp.39-48
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• 2017

Transfer printing is a method to combine printing and dyeing technology by the use of sublimation. It is an environmentally-friendly printing method that saves costs, reduces the production processes by the omission of the washing process, and saves time by maintaining quality. Due to the development of transfer printing, a high value added printing technology is available now but color fastness to sublimation of the printing products is still low since there are few dyes that have an affinity to the fabrics and the application technology is still inadequate. Specially, in case of high concentration black dyes, eco-label type black dyes, which is a substitution for general dispersal dyes, have been developed while general dispersal black dyes are still used, creating issues such as color differences on the surface and back side of the fabrics and contamination by friction after transfer printing. There are also some restricted substances such as allergens. To address these issues, high concentration black dyes and application technology that are environmentally-friendly and that have over 16 K/S through the use of single dyes with excellent color fastness, fixation ability, and similar melting temperature were developed for this study.