• Journal of Conservation Science
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• v.20
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• pp.9-22
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• 2007

Three kinds of natural pesticides extracted from plants which are being sold in the Korean markets, were estimated effects on materials of art of museum. Tested samples were 1) silk fabrics : undyed, dyed(amur cork tree, gallut, gallut(alum post mordancy), gallut(copperas post mordancy), gardenia, turmeric, acorn, acorn(copperas post mordancy), gromwell, madder, madder(alum post mordancy), safflower, sappanwood, sappanwood(alum pre mordancy, post mordancy), indigo, indigo+amur cork tree, indigo+sappanwood) 2) cotton fabrics : undyed, dyed(amur cork tree, gallut, gallut(alum post mordancy), gardenia, acorn, acorn(copperas post mordancy), gromwell, madder, madder(alum post mordancy), safflower, sappanwood, sappanwood(alum pre mordancy, post mordancy), indigo, indigo+sappanwood) 3) undyed ramie fabric 4) Korean papers : undyed, dyed(sappanwood, indigo, gardenia, amur cork tree, safflower) 5) pigments : azurite, malachite, red lead, litharge, orpiment, hematite, iron oxide, cinnabar, vermilion, indigo, lake indigo, kaolin, lead white, oyster shell white 6) painted plates : azurite, malachite, red lead, litharge, orpiment, hematite, iron oxide, cinnabar, vermilion, indigo, lake indigo, kaolin, lead white, oyster shell white. Conditions of tests were that after samples were exposed to 10 times of promoted concentration for 9 months in relative humidity $55{\pm}1%$ and temperature $20{\pm}2^{\circ}C$, they were compared with standards. Items of estimation were color difference(${\Delta}E^*$) and tenacity. After exposure to pesticides, undyed silk cotton ramie fabrics and Korean papers were not nearly changed in their colors, but colors of most of dyed samples were clearly changed by pesticides except for partial samples(acorn- and madder-dyed fabrics etc, gardenia-dyed samples). Especially changes of colors of turmeric-dyed silk fabrics were most distinct. And colors of pigments and painted plates containing lead, copper, arsenic, mercury and vegetable pigments, were clearly changed. Tenacities of yams of undyed silk fabrics were not nearly changed and undyed cotton fabrics were a little reduced as compared with standards. But tenacities of yams of dyed silk and cotton fabrics were clearly reduced or increased as compared with standards. Especially, madder-dyed silk fabrics were increased 10% or more and indigo-dyed silk fabrics were reduced 10% or less in all pesticides. Also madder- and sappanwood(alum post mordancy)-dyed cotton fabrics were increased 10% or more in all pesticides.

• Journal of the Korean Society of Clothing and Textiles
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• v.25 no.3
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• pp.577-585
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• 2001

Dyeing properties of the colorants extracted from pomegranate hull on cotton fabric were investigated. Effects of dyeing conditions and mordanting on dye uptake, color change and colorfastness were explored. Cationic agent treatment was done for cotton to improve low dyeability in natural dyeing. In addition antimicrobial activity of the cotton fabrics dyed with pomegranate colorants was examined by the shake flask method. Pomegranate colorants showed low affinity to cotton fiber and its adsorption isotherm was Freundlich type. Therefore, hydrogen bonding was involved in the adsorption of pomegranate colorants onto cotton fiber. Mordants did not significantly increase dye adsorption. Pomegranate colorants produced mainly yellow color on cotton fabric. In order to improve dye uptake, cotton was cationized by treating with Cationon UK(quarterly ammonium salt) and chitosan. The cationized cotton with Cationon UK showed higher dye uptake and shorter dyeing time, compared with the untreated cotton. Chitosan treated cotton also showed high dye uptake, but chitosan was less effective compared with Cationon UK. Fastness to washing, perspiration, and rubbing was not improved by mordanting and cationizing treatment, but light fastness was increased by all mordants and cationic agent. As dye concentration increased, bacterial reduction rate was increased and mordants did not significantly increase bacterial reduction rate.

• Journal of Sericultural and Entomological Science
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• v.41 no.1
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• pp.61-69
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• 1999

The dyeing experiments were done by using tannin pigments and herbs for natural fabrics such as ramie, hemp and silk. The anti-bacterial ability and color fastness were examined for dyed fabrics. Dye materials containing tannin pigment such as oak tree leaf showed rich dyeing on ramie, hemp, and silk fabrics when the pH of dye solution is lower as well as the dyeing temperature is higher. In crimson dyeing, the colour of fabric showed red-purple when the crimson pigment was extracted at 40$^{\circ}C$, while yellow-red when extracted above 70$^{\circ}C$. The colour fastness of dye materials containing tannin pigment was excellent showing 3~4 grade or above, while most of those derived from chinese medicine showed poor colour fastness of below 3 grade. The anti-bacterial ability of dye materials derived from chinese medicine was high, since the sappan wood fabric showed low bacteria reduction rate.

• Journal of Fashion Business
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• v.12 no.6
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• pp.61-72
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• 2008

The UV-protection effect of green-tea dyed fabrics was reported in our previous studies. The chitosan was used as a natural mordant of cellulose fiber for green tea extract because chitosan is a natural bio-polymer. The increase in the UV protection property of summer cellulose fabrics, cotton and linen, upon the repetition of chitosan mordanting and green tea dyeing was observed. However, the physical property change would be followed by this repeated wet processing of the cellulose fabric. Therefore, the physical changes of the chitosan mordanted and green tea dyed cotton and linen fabrics were evaluated by KES-FB system. Tensile, shear, bending, compression, and surface characteristics were tested upon the repetition of mordanting and dyeing treatments. Linearity of tensile force increased in the treated cotton and linen samples. Tensile energy and resilience decreased in all treated fabrics. Shear stiffness increased in the treated cotton and linen in general. Shear hysteresis was increased in all cotton samples and some linen samples. In cotton, the bending rigidity in all treated cottons increased except C3G3. As the chitosan mordanting numbers increased, the bending rigidity tended to decrease. In linen, the bending rigidity and hysteresis increased in all treated samples. Compressional energy and resilience increased as the number of chitosan mordanting increased both in cotton and linen. This could be the result of the increase in thickness upon chitosan mordanting. Surface coefficient of friction increased in the treated cotton and linen in general. Surface roughness tended to increase in cotton.

• Journal of Fashion Business
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• v.15 no.4
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• pp.144-154
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• 2011

Polygoum tinctoria dye is the one using the method of reducing dyeing, and so is made by the mechanism different from natural dye in general, and the reproductive dye is more difficult because it varies in accordance with manufacturing method and days being manufactured in case of natural indigo dye that has been used traditionally. In addition, overall analysis is short of color changes in accordance with natural dyeing condition and barely none of the research for cellulose system such as cotton in particular. Accordingly, this study tries to research on the natural dyeing method optimal for color development that is desirable in designing and development of natural dyeing as comparing and contemplating the change of dyeing quality and color in accordance with reduction temperature and time, reductant quantity, dyeing temperature and time, NaOH quantity, and dyeing repetition times in order to expand dyeing methods and use variously polygoum tinctoria by improving traditional dyeing methods as well as to establish exact dyeing method of cotton which is a fabric of cellulose system in order to make such polygoum tinctoria quantificated and reproductive. The optimum conditions in the dyeing procedure are as follows: Reducing temperature is $50^{\circ}C$. Added concentration of the reducing agent is $3g/{\ell}$. Reducing time is 30minutes. Dyeing temperature is $30^{\circ}C$. Added concentration of NaOH is $1g/{\ell}$. Dyeing time is 30minutes.

• The Korean Journal of Community Living Science
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• v.22 no.1
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• pp.77-94
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• 2011

It is not clear to assume the history of dyeing by persimmon juice without an early knowledge of an accurate record. However, the beginning of persimmon dyeing in Korea is estimated to be around the $13^th$-$14^th$ century, even though there are no supporting records. On the other hand, there are definite records of persimmon dyeing in Japan from around the 17th century. Persimmon juice was originally used for fishing tools in both Korea and Japan, but upon entering the Modern Era it eventually transfigured into a dye for fabric. In Korea, persimmon-dyed fabrics were used for traditional clothing until it also became a popular choice for modern clothes in the 1990s. In Japan, persimmon juice was originally used for varnishing surfaces of household items, but it recently became a material for arts, crafts, and even apparels. The main difference between persimmon dyeing of the two countries is the presence and absence of the fermentation process. In Korea, persimmons are picked and water is immediately added to its juice to produce the dye. In contrast, Japan produces a fermented persimmon dye. As a result, in Korea the dye can not be preserved for long periods, whilst in Japan it is matured in the storage for 2-3 years. Today's pursuit of eco-friendliness and wellness has prompted an inclination towards natural material clothes. Therefore, it is necessary for both countries to push scientific research into improving the storage methods and colorfastness of persimmon-dyed products for the increase of use consumption in other areas of persimmon and arrowroot dyed fabrics, and the development of environment friendly materials.

• Textile Coloration and Finishing
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• v.32 no.1
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• pp.38-43
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• 2020

To overcome the harmful effects caused by conventional oxidative hair dyes, natural colorants becomes more popular in the hair dyeing. By extracting Sagassum fusiforme powders with aqueous alkaline solution as a solvent at 130℃ for 60 minutes, a fucoxanthin concentration of up to 216㎍/ml can be obtained. UV/Vis analysis was used to prove the presence of fucoxanthin in the extract powder. A K/S value of 23.8 can be obtained when wool fabrics were dyed with the extract at 120℃ for 60 minutes under pH 2. The color fastness properties of the dyed wool fabrics were very good as indicated by rating 4 for laundering(color change), rating 3 or higher for rubbing, and rating 5 for light irradiation. The dyed wool fabric was found to have antimicrobial activity against Staphylococcus aureus. The antioxidant and antimicrobial activity of the Sagassum fusiforme extract can be an effective functional hair colorant. Hair dyeing with the extract formulation at 45℃ for 40 minutes under pH 5 accomplished a K/S value of 8.9. The color fastness of the dyed hair showed rating 3 against light irradiation, which increased to rating 5 with after-mordanting of tannin acid.

• Textile Coloration and Finishing
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• v.13 no.5
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• pp.32-32
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• 2001

Amur cork tree contains yellow natural basic dye largely used for dyeing on silk. Dyeabilities and fastnesses of the colorant on silk fabrics were investigated , According to dye concentration, pH, temperature, time of pre- and post- treatment of mordant, K/S values and fastnesses of the silk fabrics were examined. As a results, K/S values of dyed silk fabrics were increased by pre- and post-treatment with chinese gallotannin. The optimum condition of chinese gallotannin pre-treatment was 0.15% concentration, pH 4, 70℃, and 45min, and that of post-treatment was 0.05% concentration,60℃, and 30min. The wash fastness and the light fastness were enhanced to 4 grades and 2∼3 grades.

• Textile Coloration and Finishing
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• v.13 no.5
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• pp.320-328
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• 2001

Amur cork tree contains yellow natural basic dye largely used for dyeing on silk. Dyeabilities and fastnesses of the colorant on silk fabrics were investigated , According to dye concentration, pH, temperature, time of pre- and post- treatment of mordant, K/S values and fastnesses of the silk fabrics were examined. As a results, K/S values of dyed silk fabrics were increased by pre- and post-treatment with chinese gallotannin. The optimum rendition of chinese gallotannin pre-treatment was 0.15% concentration, pH 4, $70^\circ{C}$, and 45min, and that of post-treatment was 0.05% concentration,$60^\circ{C}$, and 30min. The wash fastness and the light fastness were enhanced to 4 grades and 2~3 grades.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.11
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• pp.1353-1360
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• 2004

The purpose of this study is to develop a cultural products design of korean image using fabrics. The study is carry out in literature research methods and make sample product. We examine existing researches about cultural product design development to understand developed items, materials, and design directions. The brainstorming method and the established literature researches were used to obtain the design components of Korean image. A cultural products design was developed into the decorative structural details. The results can be summarized as follows: Korean image is pure, passive, gentle, small, and lasting life-force at weeds and wild flowers. Korean form is rounded curve and soft silhouette as streamy, not exaggerate. Korean color is not a finishing treatment, non-dyed natural color, or pastel, light greyish, and dull tone. Korean textile is a natural materials as linen, ramie, and coarse silk. Final sample products are table supplies, home goods and bed goods applying the sewing method of tuck, quilting, top-stitching, patch work, applique and embroidery.