• Journal of the Korea Fashion and Costume Design Association
• /
• v.4 no.1
• /
• pp.99-110
• /
• 2002

This study is performed to investigate the effect of the mordant and chitosan on the colorfastness to laundering and physical properties of the mordanted, chitosan treated and natural - dyed cotton, silk and acrylics substrates. Natural dyes are extracted from Gromwell by boiled water. Three different compounds of Al, Cu, Sn and Chitosan are used as mordanting agents. The result of this study is summarized as follows: 1. Color of the fabrics dyed with Gromwell changes redder, bluer and darker after chitosan treated and mordanting. 2. After washing, the color of natural dyes changes more light and gray, Chitosan and Cu mordanting gives better colorfastness in washing than any others. 3. All chitosan treated fabrics improve air permeability. 4. In the chitosan treated fabrics, a half life of the static electricity is shown good result.

• Journal of the Korean Society of Costume
• /
• v.6
• /
• pp.161-171
• /
• 1982

The idea of King Hungdok's prohibition of clothing was to restrict the use of chinese-made cloth on the one hand and to compell his people to use Korean-made cloth for their apparel on the other. The prohibition of clothing sprang from King Hungdok's aspiration to restore his dynasty that had been falling due to the repeated drought disaster and luxurious living of the aristocracy. Safflower, Rubeaceae roots and Sapan wood are well known as some of the earliest natural red-dyes, exhibiting beautiful red-color in our anciet cultural tradition. The color yellow was considered from ancient time to the Chosun Dynasty as the central color. Thus, this color became the royal color for the costumes in the palace. Those plants used to make the color yellow are: Gardenia, phellodendron amurense, Turmeric, coptis, safflower, Arthraxon hispidus, Styphnolobium japonicum. Shikon, root of violet plant, is well known as one of the earliest natural days. By repeating the difficult process of making various dyes constantly during many centuries, the Korean people developed the marvelous technique of making natural color.

• The Korean Journal of Community Living Science
• /
• v.28 no.1
• /
• pp.143-154
• /
• 2017

This study was conducted to develop fabrics using non-toxic and eco-friendly natural dyes made from curcuma and coffee extract. The natural dyes were applied to non-printed cotton fabrics using the dip dyeing method, and the pattern was hand-printed onto the dyed fabrics to make dyed printed-fabrics. The four types of developed fabric samples were compared to analyze the effects of the dyeing materials and printing on the hygienic properties of curcuma- and coffee-dyed fabrics. The findings were as follows. First, air permeability of both curcuma- and coffee-dyed fabrics was greatly affected by the presence of patterns, although the type of dye did not seem to have an effect. Printing greatly reduced air permeability of the fabric, and coffee-dyed fabric showed greater reduction of dyeing method than curcuma-dyed fabric. Moisture regain also tended to decrease with printing, but the change was much smaller compared to air permeability. Second, increased UV blockage was observed in curcuma- and coffee-dyed fabrics with patterns compared to non-printed fabrics, showing that printing enhanced UV blocking. Third, deodorization rate tended to increase sharply for both curcuma- and coffee-dyed fabrics until 30 minutes and gradually increased thereafter to yield 30% for curcuma and 50% for coffee at 120 minutes, demonstrating higher deodorization of coffee dye. Coffee-dyed fabric showed an antibacterial rate about twice as high as that of curcuma-dyed fabric, and the observed data suggest that curcuma-dyed fabric had an insignificant level of antibiosis. Fourth, printing significantly enhanced wash, sunlight, and compound colorfastness of the two types of dyed fabrics. The effect of printing was most dramatic on sunlight and compound colorfastness, which are aspects in which natural dyed fabrics perform poorly in general. Eventually, the development and application of biologically- and environmentally-friendly fabrics with natural dyes correspond with increased interest towards the wellness and healthy attitudes of modern society.

• Journal of the Korean Wood Science and Technology
• /
• v.35 no.3
• /
• pp.79-87
• /
• 2007

This study investigated the effects of lacquer-finishing to prevent discoloration of coloring chestnut wood coated with natural dyes from deteriorating factors such as lights (indoor, 500 lux and outdoor, 50,000~70,000 lux), acid, alkali, and heat through measurement of color difference. Lacquer-finishing coating contributed to protection of intrinsic color of the natural dyeing woods in spite of severe treatment. In particular, dyeing liquor with alkali pH played a great role in prevention of light discoloration.

• Journal of the Korean Wood Science and Technology
• /
• v.45 no.3
• /
• pp.297-307
• /
• 2017

This research was performed to use recycling wood fiber from waste MDF as raw materials for manufacturing of interior decorative accessories. Virgin fiber of Pinus rigida for manufacturing MDF and recycling fiber from manufactured MDF with virgin fiber were dyed by using reactive dyes (Bis-monochlorotriazine and Vinyl sulfone type), vat dyes (Anthraquinone type), direct dyes (Diazo type) such as red, yellow and blue, and natural dyes using gardenia or sappan wood, and they were examined to evaluate their dyeing properties and sunlight fastness. The hue of virgin fiber and recycling fiber were 4.2YR, and 4.4YR, respectively, which showed red-yellowish color. The recycling fiber looked a little darker than the virgin fiber, where $L^*$ values of the recycling fiber showed a little lower. Reactive, vat and direct dyes dyed well both the virgin and recycling fibers. The recycling fiber showed a little higher values of colour yield and a little lower in $L^*$, but it seemed that there was no significant difference. The Hue values of the recycling fiber and the virgin fiber dyed with sappan wood were 4.4YR and 4.0YR, showing no difference between/after dyeing. However the Hue values of the recycling fiber and the virgin fiber dyed with gardenia were 7.4YR and 6.9YR, respectively. Those values were much higher than the values of the fibers dyed with other chemical dyes. But the fibers dyed with gardenia showed poor sunlight fastness.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.24 no.3
• /
• pp.385-392
• /
• 2000

The adsorption ability of dyes on chitin, a natural polymer was investigated for decolorization of dye wastewater. Chitin was manufactured in lab by decalcification in dilute aqueous HCI solution and deproteination in dilute aqueous NaOH solution with shrimp shells. Absorbance of residue solution of dyebaths after dye adsorptions of chitin were measured in varieties of dye concentration and dipping periods. Four kinds of dyestuffs were used, C.I.Acid Blue 29. C.I.Direct Blue 6, C.I.Reactive Orange 12 and C.I.Basic Red 18. When chtin 1g was dipped in 0.05% of dyebath with stirring, maximum adsorption ratio of each kind of dyes was exhibited as 91.6% for C.I.Acid Blue 29, 95% for C.I.Direct Blue 6, 58.2% for C.I.Reactive Orange 13 and 75.8% for C.I.Basic Red 19. It shows that chitin has better adsorption abilities of ionic dyes of acid, direct and basic dye than non-ionic reactive dye. And chitin has better adsorption abilities of anionic acid direct dyes than cationic basic dye because of the presence of nitrogen atoms. All kinds of dyestuffs used showed speedy absorption effects by chitin, so chitin can absorb much amount of dyes in 5 mimutes reach to equilibrium of adsorption in 2 hours after dipping. Basic dye was absorbed the most speedily in 5 minutes, although maximum adsorption ratio is not high. That reason can be thought that chitin surface is essentially negatively charged due to polar funtional groups.

• Textile Coloration and Finishing
• /
• v.25 no.1
• /
• pp.56-64
• /
• 2013

In order to examine the availability of color developing for prepared persimmon extract powder dyes, purified and freeze-dried powder from immature persimmon fruit. The cotton fabrics dyed with 1% concentration of powder dyes. This study was conducted to examine into the color developing effects of the powder dye for the dyed cotton fabrics irradiated with xenon light. Powder dye is difficult to dissolve in water resulting in a colloidal and viscous solution. The problem of solubility in water was resolved by setting the dyeing conditions by wetting the dye with alcohol in advance and dissolving in warm water($50{\sim}60^{\circ}C$). Samples had no alkaline conversion in making process of powder dyes showed high color developing effect(${\Delta}E^*$, K/S). Samples showed decreased ${\Delta}E^*$, K/S with increased alkaline conversion in making process of powder dyes. Samples that had alkaline effects displayed easy early color developing to be advantageous in the process of natural pattern in art work.

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2010.03a
• /
• pp.72-73
• /
• 2010

• Textile Coloration and Finishing
• /
• v.21 no.2
• /
• pp.22-28
• /
• 2009

Human hair is a kind of fibrous keratin which has much cystine residues like wool fiber. It protects human head from the dangerous shock and is an organ to release heavy metals in human body. Recently, in many dyeing field there is a trend to utilize the natural dyes. Cochineal is a reddish natural mordant dye. When the cochineal is applied in human hair dyeing, it is expected that dyeing rate will be slow and wash fastness will be poor on account of large molecular weight relative to oxidative dyes. In this work, we investigated the effects of tributyl phosphate in hair dyeing with natural dye cochineal. Dyeability of hair increased significantly by adding tributyl phosphate in cochineal dyeing. Nevertheless the hair was slightly damaged during dyeing, the dyed hair showed a good wash fastness.

• Fashion & Textile Research Journal
• /
• v.10 no.2
• /
• pp.260-266
• /
• 2008

Recently there has been a growing interest in the use of natural dyes in textile applications. Natural dyes can exhibit better biodegradability and generally have a higher compatibility with the environment. In this study, the colorants of clove were extracted with boiling water. Chitosan crosslinked cotton fabrics have been dyed with aqueous extract of clove and their dyeabilities on the fabrics were studied. Additionally the fastness to washing and light, and the effects on antimicrobial properties were also investigated. Cotton fabrics were treated with a crosslinking agent epichlorohydrin in the presence of chitosan to provide the cotton fabrics the dyeing properties of natural dye(clove) by the chemical linking of chitosan to the cellulose structure. This process was applied by means of the conventional mercerizing process. The chitosan finishing and durable press finishing of the cotton fabrics occurred simultaneously in the mercerization bath. The dyeability(K/S), which was obtained by CCM observation, remarkablely became increased when the crosslinked chitosan concentration was higher. The hue value indicated reddish yellow with increasing the crosslinked chitosan concentration. And the color fastness to washing and light was the almost the same. The chitosan treated cotton fabrics showed very high activities with almost 100% reduction.