• 한국염색가공학회지
• /
• 제14권3호
• /
• pp.44-52
• /
• 2002

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 Catalpa ovata bark were extracted with water and analyzed by spectrophotometry for their main colorant species. Cotton, silk and wool fabrics have been dyed with aqueous extract of Catalpa ovata bark and their dyeabilities on the fibers were studied. Additionally the fastness to washing, drycleaning and light, and the effects on bacteriostatic rate and UV-B protection rate were also investigated. The major colorant of the extract of Catalpa ovata bark was shown to be 6-O-trans-caffeoyl-$\beta$-D-glucopyranoside. Cotton, silk and wool fabrics dyed with the extract of Catnip ovata bark were colored in yellowish red tint. The optimum dyeing condition of the colorants extracted from Catalp ovata bark was three repeated dyeing at $95^\circ{C}$ for 1 hr using post mordanting. For dyed silk and wool fabric, the fastness to washing were improved by mordanting, and the fastness to drycleaning were very outstanding. In case of wool fabric dyed with the extract of Catalpa ovata bark, the bacteriostatic rate was increased drastically by 98.0%, and UV-B protection rate was increased by 97.3%.

• 한국생활과학회지
• /
• 제10권3호
• /
• pp.263-274
• /
• 2001

This study investigated the dyeability on silk, wool and rotten fabrics dyed with Magnolia liliflora leafs. In addition, the fastness of washing, perspiration, rubbing, drycleaning and the effects of its pigment on bacterial reduction and uv-B protection were also investigated. The results were as follows : It was found that uv-visible absorption spectrum showed two strong absorption peaks in the range of $250{\sim}340nm$. The optimum dyeing condition of the pigments extracted from the Magnolia liliflora leafs was dyeing with 0.5% mordants and three repeated dyeing at $95^{\circ}C$ for 1hr. When the wool fabric was dyed with Magnolia liliflora leaf, dyeing properties was the best among the three fabrics. Washing fastness of dyed fabrics was very low, drycleaning fastness was good and the other fastness were good. Light fastness of three fabrics dyed by Magnolia liliflora leafs increased by mordant treatment, especially copper sulfate treatment. The bacterial reduction and uv-B protection of dyed wool fabric with Magnolia liliflora leafs also increased.

• 한국염색가공학회지
• /
• 제24권2호
• /
• pp.138-144
• /
• 2012

Detergency and soil redeposition of wool fabric in 8 nonionic surfactants (Span 20, 40, 60, 80/Tween 20, 40, 60, 80) and 4 solvents (water, petroleum, perchloroethylene(PCE), decamethylcyclopentasiloxane($D_5$)) were studied. Detergency of wool fabric in water was very low with and without surfactants due to the low wetting and difficulty in penetration of water into the fabric. Lipophilic surfactants improved the detergency of wool fabric in petroleum solvent and PCE. The detergency of wool fabric in $D_5$ was similar to that in petroleum solvent without surfactants. When water was solubilized, Span 20 addition to petroleum solvent and PCE increased the detergency of wool fabric. The detergency for $D_5$ was improved with solubilized water, however, it was lowered when the surfactants were added to the system. Therefore, it is important to formulate appropriate detergents which have good solubility and affinity to silicone for $D_5$ charge system. Hydrophilic surfactants were effective for water and lipophilic surfactants were effective for petroleum solvent and PCE in soil redeposition prevention of wool fabric. The soil redeposition prevention effects are not found in $D_5$ with both Span 20 and Tween 20. The same tendency of results in soil redeposition of wool fabric is observed when water is solubilized.

• 대한가정학회지
• /
• 제40권8호
• /
• pp.99-105
• /
• 2002

This study was to investigate the natural dyeing materials in domestic, trials to detect new Inula Britannica. An appropriate dyeing condition ;was bath ratio 1:20, 50% (o.w.f.)conc., $80^{\circ}C$, 50min. The K/S values of silk fabric was the most efficient for the pre-mordanting method. The value of dyed fabric was mostly dark, for the mordanting, the chroma was best clear when using the Cr-mordant, color difference was distinct when using the Fe-mordant. The antimicrobiality of Inula Britannica itself appeared as a 6mm halo zone, dyed fabric was excellent with result of over 90% in mordant. In the case of dye fastness, the drycleaning and wet cleaning fastness was excellent, rubbing and perspiration fastness was improved, and light fastness was over level 2.

• 한국산업융합학회 논문집
• /
• 제6권3호
• /
• pp.247-252
• /
• 2003

This study is to research on two phase printing method by use of colorants extracted from sappan wood. As for the research, printing effect of printing paste, streaming time, optimal mordant concentration, change of surface color and colorfastness were measured. This experiment showed that modified starch were best on surface color among the modified starch, sodium-alginate, guar gum. And the surface color was best when the steaming time was 60 minutes, mordant concentration 8%(ow.f). And for colorfastness experiment, colorfastness to drycleaning was good, but colorfastness to light and colorfastness to washing showed no desirable result.

• 한국산업융합학회 논문집
• /
• 제6권3호
• /
• pp.239-245
• /
• 2003

This study is to research on printing method by use of colorants extracted from Sappan wood. As for the research, the stability of paste added by mordants, steaming condition, optimal mordant concentration, change of surface color and colorfastness were measured. The experiment showed that guar gum were stability among the sodium-alginate, modified starch, guar gum. And the surface color was best when the streaming time was 60 minutes, mordant concentration 3g/l. And for colorfastness experiment, colorfastness to drycleaning was good, but colorfastness to light and colorfastness to washing showed no desirable result.

• 한국의류학회지
• /
• 제15권3호
• /
• pp.281-288
• /
• 1991

Optical behaviors and dyeing properties of color solution extracted from arrowroot leaves were investigated. The wavelength of maximum absorption of the color solution appeared at 268 and 320 nm, respectively. The amount of colors extracted was increased with extracting temperature and time. Spectra of color solution are shifted to longer wavelength at higher pH values, and shifted to shorter wavelength by irradiation for 2 hrs. Remaining ratio of colors by irradiation decreased with increasing alkalinity of color solution. Degree of exhaustion on the silk fabrics was related to the concentration and pH of dyebath. Surface color of dyed fabrics, lightfastness and wash-fastness were variously according to mordant used. Hot water resistance and drycleaning fastness of dyed silk fabrics by treatment of mordants were all within commercially acceptable limits.

• 한국염색가공학회지
• /
• 제15권1호
• /
• pp.15-22
• /
• 2003

Dyeing liquor was extracted from flowers, leaves and stems of balsamine. Dyeing properties, colorfastness and antibacterial activities of the fabrics dyed with the balsamine extracts were investigated at a variety of dyeing conditions of differing pH. time and temperature. Wool, silk and nylon fabrics showed better dyeability than cellulosic fabrics, i.e. cotton, linen and rayon. Especially, nylon fabrics showed the highest K/S values. The dye-uptake was achieved to the highest degree during the first ten minutes of dyeing procedure. All fabrics were dyed well at $40^\circ{C}$ with no pH adjustment. The pH of unadjusted balsamine extracts was 4.6. Their colorfastnesses to washing, drycleaning and perspiration were good as 4 or 4-5 grade. but the light fastnesses were poor as 1-2 grade. While, the antibacterial activities to Staphylococcus aureus and Klebsiella pneumoniae were excellent with 99.9% of colonies reduction ratio. Their excellent antibacterial activity was kept well after ten times washing.

• 한국의류학회지
• /
• 제21권2호
• /
• pp.406-413
• /
• 1997

The dyeability and colorfastness of browning extracts from mushroom were investigated. The results of this study are as follows, 1. Browning extracts from mushroom exhibited dyeability to wool, nylon and silk. The wool and silk had the greatest K/S value at pH 4 and nylon at pH 5 2. Furthermore, the increase in K/S value corresponded to temperature, time, and the number of dyeing. 3. In most cases, the value of K/S was increased by mordant treatment. The treatment of pre-mordant caused the increase in K/S value depending on the concentration of mordant, but not in the color. Co.mordant and post-mordant treaments, however, showed various colors of YR, Y, and GY types of Munsell color wheel. 4. In the most cases, color fastness of light, drycleaning, laundry, sweat, rubbing was excellent.

• 한국염색가공학회지
• /
• 제5권2호
• /
• pp.91-98
• /
• 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.