• 한국의류산업학회지
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• 제19권4호
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• pp.515-522
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• 2017

The natural dyeing industry has been faced with increasing demands of constant needs for environmentally and body friendly clothing products among modern consumers. Natural dyeing has attracted attention as a next-generation technology in green textiles. Dyestuffs need to be diversified for technological development activation in order to meet the increasing demands for natural dyeing. This study extracted dyeing solutions from the leaves of the Rose of Sharon (the national flower of South Korea) and investigated its dyeing properties for the development of various natural dyestuffs. This study investigates the dyeability of silk fabrics with Rose of Sharon leaves extract. Optimal conditions for dyeing of silk fabrics with the extract of Rose of Sharon were $40^{\circ}C/80min$ and $90^{\circ}C/60min$ with 100% concentration. Looking at the results, it showed the best K/S value at pH3, Sn pre-mordanting and Fe post-mordanting. Color fastness to washing, dry cleaning, rubbing and perspiration was good at grade 4-5 or 4. However, light fastness was observed in grade 2. In aspect of functional property, it showed an excellent result of 90% deodorization rate. In addition, its proven functionalities (deodorant properties) will help to produce high value added environment-friendly products. Those findings demonstrate the possibilities of the Rose of Sharon as an environment-friendly dye.

• 한국의류학회지
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• 제35권4호
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• pp.466-475
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• 2011

The dyeing properties of protein fiber with pine needles colorants were studied through an investigation of the effect of dyeing conditions such as dye concentration, dyeing temperatures and time on dye uptakes, effect of mordants, and color change. In addition, the various colorfastness of dyed silk and wool fabrics were evaluated for practical use. The antimicrobial ability, ultraviolet-cut ability, and deodorant ability were also estimated. The dye uptake increased as the dyeing concentration increased and this enabled the obtainment of the Langmuir absorption isotherm. The dye uptake increased as the dyeing time and temperature increased. Pine needles colorants showed relatively good affinity to protein fiber and produced a yellow color. Post-mordanting was more effective than the pre-mordanting, and the dye uptake of fabrics improved by mordanting. Except for washing, the colorfastness of dyed fabrics showed a low rating. However, the colorfastness to light and the dry cleaning of fabrics mordanted with N.Cu, and the friction fastness of fabrics mordanted with Cu improved. The guide fabrics showed very good antimicrobial abilities of 99.9%; in addition, the ultraviolet-cut ability and deodorant ability improved in fabrics dyed with pine needles extracts.

• 한국염색가공학회지
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• 제28권3호
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• pp.208-218
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• 2016

This study investigated the effects of the working mechanisms of proteins, mordants, and dyes, as well as the mordanting order, on dye uptake by silk fabric pre-treated with proteins and dyed with freeze-dried sappan wood water extract. Soybean protein and sodium caseinate were used as the proteins. 1. When Al mordants were not used, the dyeability of the fabrics increased upon protein pre-treatment as compared to the case without treatment. 2. Dyeing with protein pre-treatment, followed by mordanting, led to the highest dye uptake, and the optimal protein concentration was 5%. 3. The K/S values slightly decreased with an increase in the dyeing temperature, and the fabric turned dark red in color when dyeing was carried out at increasing temperature. Fabrics showed the highest dye uptake at $40^{\circ}C$. 4. Regarding the effect of time, the K/S values of the fabrics with and without protein treatment showed almost no increase after the initial dyeing time of 10min; further, there was hardly any difference in the cases with and without protein pre-treatment. 5. In case of protein pre-treatment fabrics, the washing fastness was level 2. The dry cleaning fastness showed very excellent result with level 4-5. The rubbing fastness was better in dry rubbing than in wet rubbing of the fabrics. For the light fastness, all dyed fabrics showed low fastness.

• 한국염색가공학회지
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• 제28권3호
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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.

• 한국의류학회지
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• 제38권1호
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• pp.110-122
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• 2014

This study examined hwangbek dyeability for cotton, silk, and wool from different tree species and origin as well as their berberine and palmatine content. A total of 12 different hwangbek were examined, six purchased directly from different locations of China and six purchased from the Seoul Medicine Market. Hwangbek purchased from China were 3 Kwanhwangbek (Phellodendron amurense Rupr.) from Jilin, Liaoning, Heilongjiang and 3 Chunhwangbek (Phellodendron chinense Schneid.) from Sichuan, Yunnan, and Guangxi. Hwangbek purchased from the Seoul Medicine Market included 3 hwangbek that originated from Korea and 3 hwangbek imported from China. We extracted 2.5g of each hwangbek into 500mL of water for 60 min at $80^{\circ}C$. Dyeing was conducted using the IR dyeing machine for 30min at $55^{\circ}C$ using a 1:100 liquor ratio. Cotton was mordanted using tannic acid followed by potassium antimonyl tartrate trihydrate treatment before dyeing. Berberine and palmatine pigments in hwangbek were identified with the HPLC-DAD-MS instrument and the amount of pigment was quantified using an ion chromatogram. The results indicated that the K/S values of dyed fabrics were highly related to the amount of pigment in hwangbek used for dyeing.

• 한국생활과학회지
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• 제24권6호
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• pp.859-871
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• 2015

The purpose of this study is to examine the influence of the pigment characteristic and changes in dying conditions on the dying properties by extracting Chelidonium majus var. asiaticum using distilled water and ethanol as solvents. Changes in dying conditions include variations in dye concentrations, dyeing temperatures and time on dye uptake, and K/S Value was compared according to these changes. Additionally, color changes were observed through mordant. Ultraviolet-visible spectrum was used to investigate the pigment characteristic, and as a result, tannin was identified in distilled-water-extract, whereas berberine and chlorophyll were identified in ethanol-extract. In FT-IR analysis, tannin in distilled-water-extract was verified as hydrolyzable tannin. For ethanol extract, chlorophyll was verified through absorption band of C-H, which is aliphatic spectrum around $2920cm^{-1}$ and $2850cm^{-1}$. From GC/MS analysis, oil components as well as terpine compounds were detected in ethanol-extract, and this, in turn, brings expectation regarding functionality. When dying in silk, dye uptake increased as concentration of the extract increased, and the optimum dyeing temperature and time were $40^{\circ}C$ and 60 minutes respectively. Dyed fabrics' colors were all basically Y-series colors, and adjustment in brightness and revelation of khaki color were also available depending on the type of the mordant. Color fastness, except for washing fastness, was good in silk dyed with distilled-water-extract. Thus, it can be concluded that by selecting the right extracting method and by doing proper dyeing and mordant according to the needs, these dyed fabrics can be used as eco-friendly, functional clothing material.

• 한국의류학회지
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• 제35권3호
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• pp.336-346
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• 2011

Dyeing properties of protein fiber with bamboo colorants were studied by investigating the effect of dyeing conditions such as dye concentration, dyeing temperatures, times on dye uptakes, effect of mordants, and color change. The various colorfastness of dyed fabrics were evaluated for practical use. In addition, the antimicrobial ability, ultraviolet-cut ability, and deodorant ability were estimated. The dye uptake increased as the dyeing concentration increased. Bamboo colorants showed relatively good affinity to protein fiber and produced a yellow color. Dye uptake increased as the dyeing time and temperature increased. Post-mordanting was more effective than pre-mordanting. Mordants, Fe and N.Fe, were effective for increasing dye uptake. The color of fabric mordanted with Cu and N.Cu changed to GY. Colorfastness of dyed fabrics showed a relatively good rating, and mordanting had no significant effect on colorfastness. Dyed silk fabric showed very good antimicrobial abilities of 99.9%. Also, ultraviolet-cut ability and deodorant ability were improved in silk fabric dyed with bamboo extracts.

• 한국의류산업학회지
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• 제22권1호
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• pp.119-129
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• 2020

Unlike synthetic dyes, natural dyes do not affect the human body or create atmosphere pollution that are also mothproof, antibiotic and sterilized. This study examined the changes in dye adsorption properties according to mordant types and mordanting method to qualify trends using sage and rosemary extracts. Dyeability of sage extract is often similar to rosemary extract regardless of dyeing conditions. Dyeing properties of herb colorants on cotton, silk and wool fiber and effect of dyeing conditions on dye uptake were also compared. Dyed fabric showed a yellowish color and the dyeing affinity was somewhat good with rosemary extract. The surface color of the dyed fabrics was darkened by mordant treatment. The K/S value of herb colorants of protein fiber was higher than cellulose fiber. The concentration of mordant having the highest dyeing affinity was different from the mordant type. Regardless of the type of fiber, the K/S value of premordanting was the highest in mordanting method, and the K/S value of simultaneous mordanting indicated no noticeable mordant effect. The fastness of washing of silk fabric was reduced the most by mordant treatment. The lightfastness was reduced in Al mordant treatment regardless of the type of fiber. The lightfastness of wool increased somewhat by mordant treatment.

• 대한가정학회지
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• 제42권12호
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• pp.69-76
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• 2004

The purpose of this study was to investigate the colorfastness of cotton and silk fabric dyed with extract of Lotus leaf princeps. The experimental items were classified into mordanting treatments, fabric components and kind of mordants. The experimental test was done by laundering, abrasion(dry/wet), perspiration(acid/alkali) , light fastness, color difference by C.C.M(computer color matching) system and K/S test. The summarized findings resulting from the experiment and investigation are as follows: In the C.C.M and K/S test on mordanting method and kind of fabrics, co-mordanting treatment method and protein fabric (silk) were the most effective. Especially, Fe mordanting treatment was higher than Al, Cu, Cr and none-mordanting. In colorfastness on the mordants, perspiration and laundering fastness showed high grade (4-5) but grades of perspiration(2-3/4) and light fastness(1-3) were low.

• 복식
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• 제56권6호
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• pp.145-152
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• 2006

Dyeing properties of sargent cherry of Prunus sargentii Rehder were investigated with silk fabrics. The absorbed wave lengths at UV-VIS spectrometer were 362nm, 386nm, 430nm, and 512nm. The K/S value showed high in following conditions: 100%(w/w) stock solution, 60 minutes of dyeing time, 80$^{\circ}C$ of dyeing temperature, and 5 times of dyeing repetition. The K/S value showed higher in post-mordant than in pre-mordant, and the change of color did not appear in pre-mordant samples. They were colored greenish yellow in post-mordanted Cu and Fe. The highest dyeability and $\Delta$E showed in post-mordanted Fe. The light fastness showed 3-4 in post-mordanted Fe, 1-2 in pre-mordanted Al, and washing and perspiration fastnesses showed also good results in post-mordanted Fe.