• Korean Journal of Human Ecology
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• v.10 no.3
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• pp.263-274
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• 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.

• Journal of Fashion Business
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• v.23 no.3
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• pp.23-34
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• 2019

The aim of this study is to explore the possibility utilizing Rhododedron brachycarpum as a new natural dye resource. It was dyed in silk fabric according to different dyeing conditions such as dye concentration, dye bath temperature, dyeing time and dye bath pH. The effect of the mordanting conditions were estimated as dyeability and color changes. Additionally, the colorfastness, antibacterial property, ultraviolet protection properties of the dyed and mordanted silk fabrics were examined. The water-soluble dye of Rhododedron brachycarpum extracted with distilled water was expressed as Yellow Red color. The dye-abilities of silk generally increased depending on the increasing values of dye concentration, dye bath temperature and dyeing duration. The highest K/S values were obtained at a dye concentration of 100% (v/v), a dye bath temperature of $90^{\circ}C$, a dyeing duration 120 minutes and a dyeing of pH 2. The light fastness of dyed and Cu mordanted silk fabrics were found to be 4 grade while Al, Fe mordanted silk fabrics were found to be 2~3 grade. The dry cleaning and rubbing fastness were excellent or good. The fade of washing fastness was not good, however, the stain of washing fastness was excellent. The dyed and Al, Cu mordanted silk fabrics indicated 99.9% reduction rate. The dyed and the mordanted fabrics showed very good ultraviolet protection factors.

• The Journal of Natural Sciences
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• v.8 no.1
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• pp.137-143
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• 1995

The purpose of this study is to investigate the change of shrinkage, tensile strength, elasticity, light-fastness and color-fastness of 100% cotton upper under wear after acidic treatment and repeated washing and drying. Both of warp and welt were shrinked, especially in the early washing stage. Tensile strength was not weakened by 15 times of repeated washing. Hunter whiteness(HW) of white-underwear decreased, but color difference($\Delta$E) and yellow index(YI) increased corresponding to the frequency of washing and sunlight drying. The discoloration of color-underwear was significant in the early stage.

• Journal of the Korean Society of Clothing and Textiles
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• v.20 no.6
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• pp.992-1001
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• 1996

The binding of polyethylene glycol (PEG, average molecular weight 600) to cotton fabrics was achieved by using pad-dry-cure process in the presence of citric acid, MgCl3·6H3O, DMDHEU, and TEAHCL. Treated fabrics were dyed with direct, acid, and basic dye. Wrinkle recovery angles, durable press rate, wettability, dyeability and color fastness to washing of all treated cottons were evaluated. The results of this study were as follows: 1. The wrinkle resistance of the PEG treated cottons was increased by increasing PEG and DMDHEU concentration. 2. The wettability of the PEG treated cottons was decreased by increasing PEG and DMDHEU concentration, increased by increasing TEAHCL concentration. 3. PEG/DMDHEU/TEAHCL treated cottons had greater affinity on direct, acid, and basic dye than untreated cottons, and dyeability of the modified cottons was improved compare to untreated fabrics. 4. Color fastness to washing of the PEG/DMDHEU/TEAHCL treated cottons was good except for the wash fastness of the direct dye.

• Textile Coloration and Finishing
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• v.12 no.4
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• pp.248-255
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• 2000

Polyester fibers and fabrics have been dyed with disperse dyes in alkaline dyebath such as alkaline buffer and alkaline auxiliary(JPH-95) comparing a traditional acidic dyeing. After dyeing the samples were extracted with 100% DMF, and washing and rubbing fastnesses were measured. In dyeing at $100^\circ{C}$ the dyeing rate increased with decreasing fiber denier, regardless of dye baths, whereas the dyeing rates of the same denier fiber increased in the order of alkaline dyeing>acidic dyeing>JPH-95 dyeing. In dyeing at $130^\circ{C}$ the dyeing rate of PET fiber in JPH-95 dye bath decreased compared with the other two types of dye baths. In the time and temperature curve the dye uptake of JPH-95 dyeing was higher than the other two types of dye baths in the range of low temperature$(95~115^\circ{C})$. The equilibrium dye uptake increased in the order of 0.52d>2.04d>0.05d fiber. Washing fastness had no change in all three types of dye baths. But rubbing fastness was not good for alkaline dyeing except black dyes.

• Journal of the Korean Home Economics Association
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• v.41 no.7
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• pp.13-24
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• 2003

Recently there has been interested in the use of natural dyes in textile applications. Generally natural dyes can exhibit better biodegradability and have a higher compatibility with the environment. In this study, cotton, wool and silk fabrics were dyed with alkali extract of Arecae semen using various mordants, and their dyeabilities were discussed. Additionally the fastness to washing, perspiration, light, rubbing, and drycleaning and UV-B protection rate were also investigated. Cotton, silk and wool fabrics dyed with alkali extract of Arecae semen were colored in reddish yellow tint. The optimum dyeing condition of the colorants extracted from the Alecae semen was three repeated dyeing at $95^{\circ}C$ for 1.5 hrs. The dyed fabrics by using mordanting methods improved the fastness to washing, perspiration and drycleaning, but the fastness to light and rubbing were not increased. The UV-B protection rate of the wool fabrics were increased by dyeing with extract of Arecae semen.

• Textile Coloration and Finishing
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• v.18 no.4
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• pp.11-19
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• 2006

Black-dyed PET fabrics were sputtered with stainless steel through DC-magnetron type device to investigate the possibility of coloration effect, and then considered the morphological structure and physical characteristics such as water permeation ability and washing fastness. Change in color was estimated on the basis of CIELAB color system. The color coordination of metal plated PET was shifted to yellow-red from red-blue. Colour difference$({\Delta}E^*)$ was increased by sputtering conditions with increasing ion current and treatment time. Especially, $Lightness(L^*)$ value of PET was remarkably increased by sputtering, whereas $Chroma(C^*)$ increased gradually. From SEM analysis, rough and uneven craters were found and thickened on the fiber surfaces with longer sputtering time. And washing fastness was a little poor and absorption ability slightly decreased. There were little changes of breaking load and breaking extension. It was evident that observed uneven craters in the plated thin layer resulted in the colour change of PET fabrics by sputtering treatments.

• Textile Coloration and Finishing
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• v.17 no.1
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• pp.1-6
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• 2005

This study were carried out to investigate the effects of mordants and mordanting methods under the various dyeing conditions such as temperature, time, pH, repetition of dyeing in the silk fabrics with Petasites japonicus leaf. It was the most high K/S values of the silk fabrics dyed with Petasites japonicus leaf according to co mordanting and used cupric sulfate, ferric sulfate as mordanting agents. K/S values of the silk fabrics dyed with Petasites japonicus leaf were increased gradually with dyeing temperature, dyeing time, repetition of dyeing was higher and the optimum pH was pH 7. Silk fabrics were colored yellowish orange and surface color(munsell value) was changed from 8.3YR to 2.0Y by using mordanting agents and those of the silk showed high tone when mordanting with cupric sulfate but decolored and darked when mordanting with ferric sulfate. Washing fastness of silk fabrics were good in 4 ～ 5 grade, so washing fastness of the silk fabrics was significantly improved when washed with the neutral detergent.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.3_4
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• pp.444-451
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• 2004

This study was carried out to investigate the chemical and dyeing properties of Petasites japonicus leaf extract under the various extracting and dyeing conditions such as temperature, time, the ratio of water and pH, repetition of dyeing in silk and cotton fabrics with Petasites japonicus leaf. The results were as follows: 1. It was found that λ$_{\max}$ of color solution extracted by Petasites japonicus leaf has two peaks at 290nm and 323nm. 2. The optimum extracting conditions were studied at 10$0^{\circ}C$, 40min., pH 7 and 1 : 20(the ratio of water and Petasites japonicus leaf), the optimum dyeing temperature, dyeing time, dyeing pH and repetition of dyeing were 10$0^{\circ}C$, 60min., pH 7, repetitions of three times, respectively. 3. Silk and cotton fabrics dyed with Petasites japonicus leaf extract were colored yellowish orange. The colory Petasites japonicus leaf extract in silk and cotton fabrics were deeped by same-mordanting with aluminum potassium sufate and cupric sulfate. 4. Washing fastness of silk fabrics was 4∼5 grade, but cotton fabrics was 3∼4 grade, so washing fastness of silk fabrics washed with neutral detergent was excellent.

• Textile Coloration and Finishing
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• v.14 no.3
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• pp.44-52
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• 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%.