• 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.

• Textile Coloration and Finishing
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• v.4 no.3
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• pp.122-130
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• 1992

To improve the physical properties and the dyeing properties of silk, the silk fabric was treated with urea resin and reactive dyeing. The effects of urea resin concentration, pH of padding bath and curing condition were investigated in order to find optimum condition and the following results are obtained The optimum condition for the crease recovery of silk fabric was urea resin concentration of 80 g/ι, pH of 7, the curings temperature of about 135$^{\circ}C$, and the curing time of 3 minutes. The crease recovery and the thermal insulation ratio of silk fabric were increased by the above treatment. K/S increased as the adding amount of Na$_2$SO$_4$ increased, K/S, however was not affected by the adding amount of Na$_2$CO$_3$. Co1or fastness of the dyed fabrics treated with urea resin were improved slightly compared with untreated ones.

• Journal of Sericultural and Entomological Science
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• v.38 no.2
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• pp.168-174
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• 1996

Dyeing on silk with vat dyes which shows good color fastness at strong alkaline conditions were newly examined. The optimum conditions of dyeing bath to prevent the damage on the tensile strength and elongation were sodium hydroxide(NaOH) 10g/l, sodium hydrosulfite(Na2S2O4) 20~22 g/l, for 30 min at 5$0^{\circ}C$. The color yield of silk fabrics was increase according to the concentration of NaOH and Na2S2O4, but decreased at higher concentration than that of NaOH 10g/l and Na2S2O4 22g/l. The vat dyeings showed excellent color fastness against washing and light, compared with the conventional dyeings.

• The Research Journal of the Costume Culture
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• v.12 no.3
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• pp.407-414
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• 2004

A natural dye aqueous walnut shell extract was obtained by extraction of walnut shell using water at various conditions in this study. Silk fabrics were dyed at various dyeing and mordanting conditions using walnut shell extract and various mordants (Al, Cu, Fe ions). Studies have been made on the effects of dyeing and mordanting conditions on the dyeing properties and fastness (light, water and dry cleaning fastness) of dyed silk Fabric. The results obtained in this study were as follows;. The dye content in the walnut shell extract increased with increasing extraction temperature to 90℃ and extraction time to 120min, and thereafter the dye content decreased a little. The dry cleaning and water fastness of non-mordanted silk fabrics were better than those of mordanted silk fabrics.

• The Research Journal of the Costume Culture
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• v.22 no.3
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• pp.361-370
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• 2014

The fabric, 100% Silk, was dyed with Atractylodes japonica extract solution. The effects of concentration of extracts (colorant), temperature of dyeing, time of dyeing and pH of dye bath were studied. As the concentration of extracts increased, color strength (K/S value) increased progressively. The K/S values increased with raising temperature, time and proper conditions were $80^{\circ}C$ and 80 minutes. Maximum K/S value was obtained at pH 3. The K/S values of mordanted fabrics were increased with increasing mordant concentration up to specific values. Surface color of dyed and mordanted fabrics were yellowish. Light color fastness of fabric with mordanting was fairly good 3/4 rating. The mordanted silk fabrics showed excellent antibacterial activity. The silk fabric dyed with Atractylodes japonica extract showed a superior UV protective property.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.58 no.2
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• pp.113-118
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• 2013

This study was carried out to evaluate the dyeing possibility of purple corn stem and leaf. The UV absorbance of the purple corn stem extract and leaf extract at different pH does not change. It is considered to use to efficiently measure the purple corn pigment content when using UV absorbance at 520~560 nm. By adjusting higher pH values in the extraction dyed fabrics, silk and cotton fabric used by the purple corn leaf extraction decreased lightness and redness. Extent for dyeing the fabric depending on the concentration, lightness and redness showed a tendency to increase color values when silk and cotton concentration increases. Also when the longer the dyeing time, silk and cotton increased lightness but redness decreased.

• Textile Coloration and Finishing
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• v.6 no.1
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• pp.8-18
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• 1994

In one bath dyeing system of silk/cellulose acetate fiber blend fabric with acid /disperse dyes, adsorption behavior of acid dyes and disperse dyes on silk and cellulose acetate fabrics were examined. In the dyeing of cellulose acetate with C. I. Disperse Red 19(Red 19) and C. I. Disperse Red 60(Red 60) at 8$0^{\circ}C$ and 10$0^{\circ}C$, dye uptake with Red 19 was higher than that with Red 60. When the silk/cellulose acetate dyed with Red 19 and Red 60 at 10$0^{\circ}C$, dye uptake on cellulose acetate was influenced by affinity of the dye to the silk fabric dyed together. When the silk/cellulose acetate dyed with Blue 80/Red 19 and Blue 80/Red 60 at 10$0^{\circ}C$, color of cellulose acetate dyed with Red 19 and Red 60 was not influenced by Blue 80 but silk dyed with Blue 80 was influenced by Red 19 and Red 60. Interrelation of K/S value and Munsell value was scarcely any but showed the change tendency of K/S value.

• Journal of Sericultural and Entomological Science
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• v.26 no.2
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• pp.26-31
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• 1984

In general, acid dyes been used for silk dyeing, but acid dyed silk shows weakness in color fastess, To improve this defect, the silk dyed with Acid Mordant Blue 13 was treated with chromes salts solution. Some mechanical properties and dyeing behaviors of the chrome mordant with dyed silk fabric were tested in this work. The tensile strength of silk fabric treated with chrome salts solution was decreased as the duration of treatment was increased. The mean rate constant (K) of photo-degradation was 1.019, and 1.047 after treated with Cr (III) and Cr (Ⅵ), respectively, whereas it was 1.304 in untreatment. The washing fastness of silk fabric also was improved by treatment with mordant and it was 3rd-4th grade and 4th grade when silk was treated with Cr (III) and Cr (Ⅵ), respectively, while untreatment gave 1st grade. The colour of dyed silk fabric was 2.5RP.3/10, but it was 5PB.4/3 and 5PB. 4/4 when the silk fabric was treated with Cr (III) for two hours and with Cr (Ⅵ) for one hour at 90$^{\circ}C$, respectively.

• Textile Coloration and Finishing
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• v.5 no.2
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• pp.91-98
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• 1993

The silk fabrics were treated with color solution extracted from leaf of Camellia. The depression effect of destruction and yellowing of silk treated with color solution, shift of UV-VIS spectra of color solution, color difference of silk fabrics by dyeing with acid dyes and drycleaning fastness of silk treated with color solution were studied. UV-VIS spectra appeared to hypsochromic shift by irradiation. The decrease of tensile strength and the elongation of the silk treated with color solution showed depressed but those of untreated silk increased by irradiation. The yellowness index of silk treated with color solution showed a little change by irradiation. The color difference after dyeing with several acid dyes on treated and untreated silk showed not remarkable changes. Dsrycleaning fastness of silk treated by color solution was excellent.