• 한국염색가공학회지
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• 제18권5호
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• pp.22-29
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• 2006

The purpose of this study was to investigate the dyeability and antibacterial activity on wool fabric dyed with cochineal at variable dyeing conditions. Al, Cr, Fe, Cu and Sn were used as mordants and adsorption was compared with different mordanting methods. The optimum dyeing conditions of wool fabrics were dyeing concentration 2.0%(o.w.s), dyeing temperature $60^{\circ}C$, pH 3 and dyeing time 30 minutes. The pre-mordanting method was preferred for Al and Cr, and the post-mordanting one was preferred for Cu, Sn and Fe to achieve better dyeing. The optimum mordanting conditions of wool fabrics dyed with cochineal were mordanting concentration of 1%(o.w.s), mordanting temperature $60^{\circ}C$, and dyeing time 30 minutes. Wool fabrics dyed with cochineal showed a little antibacterial activity, but it was increased by Cu and Sn mordanting. The light fastness and perspiration fastness of wool fabric treated with cochineal were improved by mordanting.

• 한국의류학회지
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• 제34권3호
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• pp.393-400
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• 2010

This study examines the mordanting effect and multi functional properties of silk fabrics dyed with onion shell extracts that were mordanted with gallnut. The contents of this study are as follows. First, the optimum dyeing conditions were investigated by measuring the K/S value that depended the on dyeing conditions when silk fabrics were dyed with onion shell extracts. Second, the color, brightness, and chroma differences that appear after mordanting with gallnut were investigated by measuring the K/S and Munsell value. Third, the color fastness and antimicrobial activity were measured. When silk fabrics were dyed with onion shell extracts, the optimum dyeing conditions were a dyeing temperature of $70^{\circ}C$, a dyeing concentration of 160%, and a dyeing of time 30min. After mordanting with gallnut extracts, the K/S value increased remarkably and was larger in pre-mordanting than post-mordanting. The H value displayed yellow-red in all cases of pre and post mordanting. However, the H value was more reddish in the order of non-mordanting

• 패션비즈니스
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• 제15권4호
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• pp.182-189
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• 2011

Dyeing properties of cow leather was investigated with Tumeric powder. The effects of dyeing conditions, mordanting conditions, color change, and color fastnesses were studied. The results were as follows. The dye uptake increased as dye concentration, dyeing temperature, and bath ratio increased. In the effect of dyeing time, the highest dye uptakes showed at 20 minutes and decreased after that point. Pre mordanting was more effective than the post mordanting, and the dye uptakes improved all mordanted fabrics. The highest K/S values showed in pre-Al sample, and the lowest K/S values showed in post-Cu one. The values of Hunter on the samples were more changeable $L^*$ and $b^*$ than $a^*$, and all samples showed Yellow color in Munsell value. But the mordanting methods and mordanting agents were not significant in the color changes. The light fastness of dyed samples showed 1 grade, the dry cleaning and abrasion fastnesses did not improved except post-Fe wet sample.

• 한국의류산업학회지
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• 제8권6호
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• pp.702-708
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• 2006

The purpose of this study was to investigate the dyeing-property and antibacterial activity on nylon fabric dyed with cochineal at variable dyeing conditions. Al, Cr, Fe, Cu and Sn were used as mordants and adsorption was compared with different mordanting methods. The maximum UV-visible absorption band of cochineal extract was 495 nm. The dyeability on nylon fabric was good because of having a amine group. The optimum dyeing conditions of nylon fabrics are dyeing concentration 1.5%(o.w.s), dyeing temperature $60^{\circ}C$, pH 3 and dyeing time 30 minutes. The pre-mordanting method is preferred for Al and Cr, and the post-mordanting one is preferred for Cu, Sn and Fe to achieve better dyeing. The optimum mordanting conditions of wool fabrics dyed with cochineal are mordanting concentration of 0.5%(o.w.s), mordanting temperature $60^{\circ}C$, and dyeing time 30 minutes. Nylon fabrics dyed with cochineal show a little antibacterial activity, but it was increased by Sn mordanting. MIC test results in antibacterial activities revealed that the antibacterial activity of Cu was the highest among mordants, but Sn mordant was the most effective in antibacterial activities after mordanting treatment of nylon fabric. The fastness properties of dyed nylon fabric showd a little worse or a similar level and there was no significant difference between a mordanted and non-mordanted fabric.

• 한국의류학회지
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• 제36권3호
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• pp.324-334
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• 2012

In this research, the dyeing properties of $Lycopus$ $lucidus$ Turcz on cotton and silk fabrics were evaluated to establish a scientific database of natural dyes. The optimum dyeing conditions were identified with K/S values depending on the dyeing concentration, temperature, time, and pH. For the optimum conditions, the color changes for different synthetic mordants were observed as L, $a^*$, $b^*$ and H, V, C. The color fastness after dyeing and mordanting was also examined. Additionally, the antibiosis of $Lycopus$ $lucidus$ Turcz was examined. The results were as follows: For the cotton, the optimized dyeing conditions were 300% (o.w.f.), $50^{\circ}C$, 40 min., and pH 5. For the silk fabric, the conditions were 450% (o.w.f.), $70^{\circ}C$, 60 min., and pH 4. The K/S value of dyed cotton improved about 1.03-2.78 folds after mordanting. The fabric color was yellow in the absence of mordanting, while it was reddish yellow after post-mordanting with FFC. Although the color changed with the mordanting method and mordant, the overall hue was yellow. Thus, $Lycopus$ $lucidus$ Turcz appears to have the potential for use as a natural dyeing material for a yellow hue. The K/S value of the dyed silk fabric improved about 1.05-1.40 folds after mordanting. The fabric showed a reddish yellow color when pre-mordanted with Al and Cu. The washing and dry-cleaning fastness of the cotton and silk fabrics were at the 4-5 level. The light fastness of the cotton improved after mordanting; however, pre-mordanting was more effective than post-mordanting or the absence of mordanting. The dyed cotton, silk fabrics showed excellent antibiosis.

• 복식문화연구
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• 제23권5호
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• pp.768-777
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• 2015

In this study, the dyeing of silk fabric with Polygonum cuspidatum extracts was investigated. The contents of this study are as follows. First, the proper dyeing conditions were investigated by measuring the dye uptake (K/S value) that depended on the dyeing conditions when silk fabric was dyed with Polygonum cuspidatum extract. Second, the brightness (L), hue, and chroma differences that appear after mordanting with Al, Cu and Fe were investigated by measuring the CIELAB and Munsell values. And third, the colorfastness and antibacterial property were measured. When the silk fabric was dyed with Polygonum cuspidatum extract, the proper dyeing conditions were a colorant concentration of 90% v/v, a dyeing of time 100 minutes, a dyeing temperature of $70^{\circ}C$, and a dyeing of pH 3. In mordanting methods, the dyeabilities of post-mordanting were higher than those of premordanting. The hue value displayed yellow (Y) and yellow-red (YR) in cases of pre and post mordanting. The C value decreased by the mordanting of Polygonum cuspidatum extracts. Generally the colorfastness of mordanted fabrics was improved by mordanting. The dyed fabrics showed a 90.6% of Staphylococcus aureus reduction rate, and the dyed and mordanted fabrics showed 97.1% bacteria reduction rate. The dyed and mordanted fabrics showed above 90.5% Klebsiella pneumoniae reduction rate, and Cu mordant revealed the most effective bacterial reduction.

• 한국의류학회지
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• 제27권9_10호
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• pp.1134-1143
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• 2003

The purpose of this study is to investigate surface color change and effects of mordants on the K/S values of silk and wool fabrics dyed with Lac extract, according to the mordanting methods and conditions such as temperature, concentration and time of the mordanting bath. The results were as follow; 1 K/S values of the silk and wool fabrics according to the temperature of the mordanting bath were shown a slight decline beyond 40$^{\circ}C$. 2. Surface color of the silk changed from red to reddish purple and that of the wool showed red tone when mordanted with Aluminum postassium sulfate, Copper acetate and Copper (II) sulfate regardless of the mordanting conditions. 3. The light and dry cleaning fastness of silk and wool fabrics dyed with Lac extract according to the mordanting methods were very good.

• 한국의류학회지
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• 제25권8호
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• pp.1484-1492
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• 2001

For the purpose of standardization and practicability of dyeing by natural dye, the mordanting and dyeing properties of Lithodpermum officinale were studied. Appropriate extraction, dveing and mordanting conditions of Lithodpermum officinale were determined, and the effect of mordanting no dye uptake and color fastness of dyed fabric was investigated. The maximum absorbances of Lithopermum officinale solution were at 521 and 561 mn, shikonin solution were 517 and 556 mn. According to the UV-VIS spectroscopy of shikonin solution showed batho chromic shift with the increase of temperature and the absorbance of shikonin solution increased with the increase of temperature. The color of Lithodpermum officinale solution was affected by pH 8∼9, they became dark, reduced reddish and bluish. The optimum conditions for extraction from Lithodpermum officinale were at 80$\^{C}$ and for 1 hour and at 25$\^{C}$ for 24 hours. And effective dyeing conditions with silk fabric were temperature at 80∼100$\^{C}$ and period for 60min. K/S value and color fastness of dyed fabrics were increased by mordanting treatment. In the case of Lithodpermum officinale light fastness was better than Sophora japonica, Gaesalpinia Sappan, Rhusjara,. Cochineal dyeing fabrics. Perspiration fastness of Lithodpermum officinale were good. Fastness of abrasion and dry-cleaning were good these fastness improvement were generatlly effected by post-mordanting treatment.

• 패션비즈니스
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• 제16권4호
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• pp.100-106
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• 2012

This research was carried out to find the mordant effect of Chestnut's inner skin on the cow leather dyed by Turmeric powder. The best proper mordanting conditions were examined by changing mordant method, concentration, temperature, bath ratio, time, and repetition. Also dyeability and surface color changes were evaluated by various mordanting methods. The optimum mordanting conditions of chestnut's inner skin extract on the cow leather were pre mordant, 80%, $50^{\circ}C$, 50:1, 40minutes, 4 repetition. The K/S values as a mordant were higher in pre mordant than post mordanting condition. Although the ${\Delta}E$ was slightly higher in post mordant than pre mordant, it was too small to find any means. The surface colors of all dyed cow leathers were yellow. Among light, dry cleaning, and abrasion fastnesses, only light fastness was increased one degree, others were same degrees.

• 복식문화연구
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• 제22권6호
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• pp.890-898
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• 2014

This study focuses on the effects of dyeing conditions and mordanting conditions, changes of colorfastness, antibacterial properties and UV protective of silk fabric dyed with Laminaria japonica extracts. A natural colorant was extracted from Laminaria japonica using distilled water as extractants. According to the results, maximum dye uptake (K/S) were obtained at 100% V/V colorant concentration, $80^{\circ}C$, 60 min and pH 2. Silk fabric was dyed with Laminaria japonica extract at $80^{\circ}C$ for 60 min with pre-treatment or post-treatment of various metal salts as mordants. The Laminaria japonica extracts produced yellow hue on silk fabric in pre-mordanting and manifested green yellow hue mordanted with $CuSO_4$ in post-mordanting method. Mordant $CuSO_4$ for silk fabric was found to give good light fastness (rating 4). UV protection property did not increase significantly upon mordanting.