• Fashion & Textile Research Journal
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• v.19 no.3
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• pp.337-343
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• 2017

The purpose of this study is to investigate the optimal dyeing conditions and human-friendly properties of the extract from the branches of Alnus firma tree which is widely used for forestation and to provide basic information for quantification and commercialization of natural dyeing by discovering such as dye material. The optimal dyeing conditions, as a result, were shown at 100% of dye concentration, $90^{\circ}C$ of dyeing temperature and 40 minutes of dyeing time. In terms of dye uptake depending on the mordanting methods, it showed the best result in order of Fe, Sn, Cu and Al at pre-mordanting while found strong in order of Fe, Cu, Al and Sn at post-mordanting. Color fastness to washing and dry cleaning was found strong at grade 4-5 and fastness to light was rated at 2. The grade of change in color to rubbing and perspiration was good at 4-5. In aspects of functional properties, it showed excellent results of 98% deodorization rate at 120 minutes of dyeing time, 96.1% UV protection rate and 99.9% bacterial reduction against Staphylococcus aureus and Klebsiella pneuminiae. It is considered, therefore, the extract from Alnus firma tree is of great value as an eco-friendly natural dyestuff.

• Journal of Sericultural and Entomological Science
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• v.27 no.1
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• pp.42-46
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• 1985

Silk fabric was printed with the reactive dye (vinylsulfone type) to investigate the change of adsorption and fixation by steaming time, viscosity of dyeing paste and alkali concentration. It was found that the amount of adsorption and fixation against silk increased with the increase of steaming time, and showed the maximum value at 340cp of dyeing paste. The amount of adsorption and fixation was influenced by alkali concentration. Light, washing, and perspiration fastness were very excellent.

• Journal of the Korean Society of Clothing and Textiles
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• v.25 no.2
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• pp.268-274
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• 2001

Dyeing properties of the colorants extracted from pomegranate hull on silk fabric were investigated. Pomegranate colorants were characterized by FT-IR analysis. Effects of dyeing condition and mordanting on dye uptake, color change and colorfastness were explored. Pomegranate colorants showed high affinity to silk fiber and its isotherm adsorption curve was Langmuir type. Therefore, ionic bond was involved in the adsorption of pomegranate colorants on to silk fiber. Mordants except Fe did not significantly increase dye adsorption. Pomegranate colorants produced mainly yellow color on silk fabric, but the silk mordanted with Fe showed yellow red color. Fastness to washing, perspiration, and rubbing was not improved by mordanting treatment, but light colorfastness was increased by Fe mordant.

• Textile Coloration and Finishing
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• v.8 no.1
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• pp.26-33
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• 1996

The berberine from Amur cork tree is natural yellow dye and can be extracted more easily by water. The berberine is basic dye and was extracted at 90-95$^{\circ}C$. We have obtained the following results; 1. K/S value in the abstract of dye was increased by time-elapsing, but the reasonable time was between 90-120min. 2. The reasonable weight of Amur cork tree in the abstract of dye was between 10-20 g/L. 3. We obtained various colors in case of using mordants. ―In case of 10g/L and 20g/l, the reasonable value of mordant was 5-10%(owf). and in case of using tannic acid and $FeSO_{4}$ we could obtain high K/S value. 4. &{\lambda}_{max}& of UV spectra was shown 420nm. 5. Genarally fastness of drycleaning indicated more than grade 4. but it of perspiration was more stable in acid than alkali.

• Journal of the Korean Society of Costume
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• v.56 no.6 s.105
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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.

• The Research Journal of the Costume Culture
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• v.12 no.1
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• pp.1-11
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• 2004

This study was carried out on the process of natural dye substances which can flock ultraviolet rays without producing harmful substances by pollution, germs, etc. While making human body safe in contact, extracting Gardenia, Sappan wood, Radix scutellariae, Cromwell, Mugwort, Gallnut, Lac. Those are used for curing diseases, dyeing silk cloth with those extracts, and examining the color fastness, Ultraviolet protection. From this study, the following conclusion was produced. Brightness was lower in pre-mordanting than in post. And color difference showed that Radix scutellariae was the highest. Aluminum-mordanting showed a higher color difference than Fe. Colorfastness to washing was high in all samples, and the degree of color-changing by washing was the highest in the sample dyed by gardenia, pre-mordanted gallnut showed the highest degree. Colorfastness to perspiration was the highest in gardenia. UV-A test showed that all samples a high rate of 85% or higher compared with test white cloth. Especially, post-mordanted radix scutellariae, pre-mordanted gallnut and post-mordanted sappanwood showed a superior blocking rate.

• Journal of the Korean Society of Clothing and Textiles
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• v.26 no.3_4
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• pp.485-491
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• 2002

Dyeing properties of rosemary colorants on cotton fabrics were investigated. Effect of dyeing conditions on dye uptake and effect of mordanting and cationizing on dye uptake, color change and colorfastness were explored. Also, antimicrobial activity of rosemary colorants was ascertained and further effect of cationizing on antimicrobial activity was investigated. Affinity of rosemary colorants to cotton fiber was considerably low, and its isotherm adsorption curve was Freundlich type, indicating that hydrogen bonding was involved in the adsorption of rosemary colorants to cotton fiber. The cotton fabrics showed generally high colorfastness except fastness to washing and light. The cationized cotton with Cationon UK(quarterly ammonium salt) showed higher dye uptake and shorter dyeing time, compared with the untreated cotton. The cationized cotton showed good colorfastness to washing, perspiration and rubbing. Antimicrobial activity of rosemary colorfastness was confirmed. The cationized cotton itself showed high bacterial reduction rate. For cationized and dyed samples, as dye uptake increased, bacterial reduction rate was decreased slightly.

• Korean Journal of Rural Living Science
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• v.8 no.2
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• pp.73-81
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• 1997

Parsimon juice dyeing is the one of the most popular natural dyeing methods which have been done traditionally among the farmers. The clothes dyed with parsimon juice has several merits, that is, it become much more durable, cool, easy to wash and wear after dyeing and these merits are the reason why people likes to wear the parsimon juice dyeing clothes as work wear. Especially in Cheju province, parsimon juice clothes became a folk costume and many people still enjoy wearing it in the hot summer days. But one of the demerits of parsimon dyeing is that the possible period of dyeing is very short. So, if parsimon juice dyeing could be done with the preserved parsimon juice, it would be possible to enlength the period. With this idea, we compared the color and colorfastness of fabrics which were dyed with 4 kinds of parsimon juice. The experimental parsimon juice 96-8 was preserved during 13 months, 96-9 was 12 months, 97-8 was 1 month and 97-9 was not preserved one. The experimental fabrics were cotton, silk. nylon and polyester fabrics. The results were as follows ; 1. The colors of fabrics dyed with experimental parsimon juice 96-9, 97-8, 97-9 were yellow-red and dyeing states were good. But the colors of fabrics dyed with 96-8 were dark and the state were bad, because the color of experimental parsimon juice 96-8 was changed during preservation. 2. The best state of dyeing could see in the fabrics dyed with experimental parsimon juice 97-8, although that was preserved 1 month. 3. There were differences of color between experimental fabrics dyed with same juice and the colors were thicker in cotton and silk than in nylon and polyester fabrics. 4. During wetting and drying process, the color changes in fabrics dyed with no preserved one were more than in fabrics dyed with preserved ones. 5. The color fastness to the light of the dyed fabrics was over 4, to the acidic perspiration was 3~4 or 4~5, to the alkaline perspiration was 2, 3 or 3~4 and to the washing was 1~2. There was no significant difference in colorfastness between the 96-9 dyed fabrics and 97-9 dyed fabrics.

• Journal of the Korean Home Economics Association
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• v.11 no.3
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• pp.285-298
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• 1973

The colorfastness of dying persipiration and laundry on summer clothing must be considered, because it has special relation to the human body. The colors of fibers as cotton, p/c, acryl, polyester and nylon which have been widely used for blouse and T-Shirt of Knitted wear are R-P, Y-G, BI-B and print. Studies were carried out with persipirometer, for the natural fiber of cotton the chemical one of nylon, with additional stuff involved, which polluted. The experiment was conducted to colorfastness with acid solution and alkaline solution to see the alteration of color and staining of man-made persiperation. The results obtained from this experiment can be summerized as follows. 1. The order of color alteration isnylon < p/c < coton < polyester < acryl, and the nylon shows the lowest colorfastness, which is 3 class, and the acrly shows the highest colorfateness, which is 5 class. The staining of multifiber test of cotton fabric is nylon < p/c < polyester < cotton < acryl. The staining of multifiber of nylon fabric is nylon polyester < p/c < cotton < acryl. 2. In acid solution and alkaline solution, the alteration of color and staining makes almost no difference, but concerning staining of cotton, the acid solution is lower than the case of alteration solution only. 3. In the pollution on cotton and nylon, the latter is more easily polluted than the former regardless of fabrics. Especially in case of polluted nylon, ti shows the lowest color fastness (2 class), which causes a problem of the dying process and dye stuffs. 4. No difference of color alteration shows among them, but R-P and print show low color fastness (2 class), especially printed nylon shows the lowest value (1 class).

• Textile Coloration and Finishing
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• v.14 no.1
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• pp.1-10
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• 2002

The aim of study was to elucidate dyeability and antimicrobial and antifungal activity of silk fabrics dyed with Sophora Radix extracts according to different mordants. Dyes were extracted from Sophora Radix using ethanol. Then, silk fabrics were dyed with extracts two times by post-mordanting method in which the extract was 60%(owf), the mordant was 3%(owf), L.R was 1:20, the temperature was $60~60^\circ{C}$, the time of dyeing was 60min., and the time of mordanting was 60min. The dyeability was evaluated by surface color, K/S values and durability of dye. The skin microorganisms used in this study was S. sureus, B. subtilis, S. epidermidis, P. acnes, P. aeruginosa, E coli, A. niger, C. albicans and T. mentatrophytes. The results are as follows; 1. When mordants were added, K/S value of silk dyed was not improved much and surface color was 2.2Y to 8.8Y in H(hue) value which indicated greenish yellow to raddish yellow 2. The color fastness tests to light, perspiration, dry-cleaning, rubbing, and stain fabric washing show 4~5th degree which were valuated excellent. The color fastness to fade washing was improved to 3~4th degree by addition of $K_2CrO_7$ mordants. 3. Antibacterial activity of silk dyed using no-mordant as well as mordants was excellent on S. aureus, B. subtilis, S.epidermidis and P.acnes, but showed poor antibacterial activities on P.aeruginosa and E.coli such as gram negative baterials 4. Antifungal activity of silk dyed with ethanol extracts was good on A.niger, C.candida and T.mentagrophytes. Especially, on T. mentagrophytes there was no growth of fungus during 72 gous in silk dyed mordanting with $SnCl_2\cdot{2H}_2O$.