• 복식
• /
• 제56권1호
• /
• pp.143-149
• /
• 2006

For the purpose of standardization and practicability of natural dyeing, the mordanting and dyeing properties of Acorn Shell was studied. Appropriate extraction, dyeing and mordanting condition of Acorn Shell were determined, and the effect of mordanting method on dye uptake and color fastness of dyed fabric was investigated. The maximum absorbance of Acorn Shell solution was at 287.5nm and 294nm. The pH effect was stable in the color difference changes. The optimum temperature to extract Acorn Shell was during 1 hour in $60^{\circ}C$. The effective dyeing temperature and time of silk were $80{\sim}100^{\circ}C$, 1hour. The silk fabrics dyed with Acorn Shell appeared yellow-brown. K/S value of dyeing fabrics was increased by mordant treatment. K/S value of post-mordanting was higher than pre-mordanting. Mordanting treatment attected color change of the dyed silk. In the case of Acorn Shell light fastness of appeared more than 3-5grades by post-mordanting. Abrasion fastness of appeared more than 3-5grades. Perspiration fastness of appered more than $3{\sim}5grades$ by mordant treatment but Cu mordant treatment was $2-5{\sim}4grades$. Dry-cleaning Fastness appered more than 4 grades except Cu mordant treatment. These fastness improvement were generally effective for mordant treatment, specially Al, Sn, Cr.

• 한국염색가공학회지
• /
• 제28권4호
• /
• pp.280-289
• /
• 2016

Silica microgel was prepared by sol-gel process and then functional groups, epoxy group and ethoxy group, were introduced on the particle by coupling treatment with 3-glysidoxypropyltrimethoxysilane. The functional silica microgel(functional SiGel) formation was identified using FT-IR spectrometry. Phase stability for DMF solution of functional SiGel, PU resin and pigment was evaluated by Turbiscan Lab. And physical properties of artificial suede including hand values, morphology and dyeing fastness were investigated. The mean particle size and the specific surface area of the functional SiGel were $0.77{\mu}m$ and $380m^2/g$. Mixture containing the functional SiGel, PU resin and pigment was more stable than the functional SiGel-free mixed solution. Artificial suede prepared by the functional SiGel had appearance and feeling close to natural suede. The migration fastness, the solvent wicking fastness and rubbing fastness of the artificial suede were enhanced to 4~5 grades, 4~5 grades and 3~4 grades, respectively.

• 복식
• /
• 제55권8호
• /
• pp.154-160
• /
• 2005

For the purpose of standardization and practicability of natural dyeing, the mordanting and dyeing properties of Puerariae Radix was studied. Appropriate extraction, dyeing and mordanting condition of Puerariae Radix were determined, and the effect of mordanting method on dye uptake and color fastness of dyed fabric was investigated. The maximum absorbance of Puerariae Radix solution was at 290nm and 301nm. The pH effect was stable in the color difference changes. The optimum temperature to extract Puerariae Radix was during 1 hour in loot. The effective dyeing temperature and time of silk were 80$\~$ 100$^{circ}C$, 1hour. The silk fabrics dyed with Puerariae Radix appeared yellow-brown. US value of dyeing fabrics was increased by Fe, and Cu mordant treatment. Mordanting treatment method affected color change of the dyed silk. In the case of Puerariae Radix light fastness of appeared more than 2-5 grades by mordant treatment. Perspiration fastness of appered more than 4 grades by Al, Sn, Cr mordant treatment. Fastness of abrasion and dry-cleaning appered more than 4-5 grades. These fastness improvement were generally effective for mordant treatment, specially Al, Sn, Cr.

• 복식
• /
• 제49권
• /
• pp.73-84
• /
• 1999

The purpose of this study was to investigate dyeing properties of silk and wool fabric by Cassia tora extracts according to the conditions such as extraction(temperature time) dyeing(temperature time) condition kinds of mordants temperature of mordanting. The color fastness of laundering irradiation were examined. The results were as follows: The wavelength of maximum absorpthion by extracts appeared at 201, 277, 382nm in UV-Vis spectrum. Absorbance of extracts were increased with temperature and time. The extraction efficiency of Cassia tora was determined as $95^\circ{C}$ of extraction temperature 120 minutes of extraction time. Silk fabric had highest K/S value when dyeing for 90min at $40^\circ{C}$. Wool fabric had highest K/S value when dyeing for 60min at $80^\circ{C}$. Surface color of silk and wool fabric dyed with Cassia tora extracts was 3,9Y and 0.4Y but it was changed from 9.3YR to 7,4Y and from 9.4YR to 5Y by mordants. The fabrics of mordanted by metal ion dyed the depth of color. Laundering and irradiation fastness of mordanted fabrics were improved as compared with nonmordanted fabrics.

• 한국의류학회지
• /
• 제33권2호
• /
• pp.222-229
• /
• 2009

The natural dyeing of cotton fabrics with Rumex crispus L. root extract was investigated. The dyeability of Rumex crispus L. root extract was evaluated with conditions of concentration, temperature, time, repeat-numbers, pH, mordants variables, methods of mordanting, color fastness and antibacterial activity, etc. The maximum V-visible spectrum possessed absorption band of Rumex crispus L. extract appeared at 274nm and 336nm. The amount of dyes extracted was increased with extracting concentration, temperature and time. The K/S value increased with increasing dyeing concentration and repeat-numbers. The K/S value increased with increasing dyeing temperature and time, the exhaustion was saturated in $90^{\circ}C\;and\;80min$, respectively. Surface colors of fabrics dyed with pH 3, 7, 11 extract were RP-R-YR-Y range. The light fastness and washing fastness showed good results in Fe-mordanted. The dry leaning fastness appeared more than 4 grade. Rubbing fastness was better in dry methods han that in wet methods. In the result of antibacterial activity, the decrease rate was 9.9% to Staphylococcus aureus with the dyed fabric of cotton.

• 한국염색가공학회지
• /
• 제18권2호
• /
• pp.15-23
• /
• 2006

A new fastness formula based on CIEDE2000 color-difference formula is developed by B. Rigg and his coworkers. It is very simple to calculate fastness grade for color change than ISO 105-A05 fastness formula based on CIELAB color-difference formula. Sample pair sets which cover a wide range color space were accumulated from NCS(Natural Color System) color book. For those sample pair sets, visual measurement experiment and instrument measurement experiment of fastness grade were carried out and each performance of ISO 105-A02 fastness formula and newly developed fastness formula was compared through degree of agreement for visual measurement result. Newly developed fastness formula indicated improved performance for measuring fastness grade but current ISO fastness formula for assessing change in color, ISO 105-A05, was confirmed that it's performance is inadequate to measure fastness grade. Then fastness formulae were examined more closely according to particular color spaces and the correlation of hue, lightness and chrom for measuring fastness grade was also considered in this study.

• 한국염색가공학회지
• /
• 제30권4호
• /
• pp.256-263
• /
• 2018

The binder polymers for digital textile printing(DTP) pigment inks were prepared using miniemulsion polymerization with various monomer compositions to study effects of monomer compositions on particle size distribution, average molecular weight, Tg, and color strength and rubbing fastness of the dyed fabrics with the prepared binder based pigment ink. The monomers used were MMA(Methyl methacrylate), BA(Butyl acrylate), MAA(Methacrylic acid), NMA(N-methylol acrylamide), NEA(N-ethylol acrylamide) and the ratios of the monomers were changed. The particle size was the smallest with 136nm when the MMA to BA weight ratio was 4:16 and the largest with 290nm when the MMA, BA, MAA, NEA ratio was 2.5:17:0.25:0.25. However, the glass transition temperature was lowest with $-41.90^{\circ}C$ and the color strength and rubbing fastness of the resulting sample were the best when the MMA, BA, MAA, NEA ratio was used. This suggested that the introduction of the NEA monomer to the binder polymer for the pigment ink could be an efficient way to enhance the rubbing fastness of the DTP pigment inks present.

• 한국염색가공학회지
• /
• 제30권4호
• /
• pp.275-287
• /
• 2018

In recent years, research on the development of eco-friendly synthetic suede based on water-dispersed polyurethane resin and non-fluorine water repellent has been conducted. Synthetic suede has a problem that the fastness to dyeing is greatly lowered after the water-repellent processing at a high temperature of $160^{\circ}C$ because the polyester is dyed with a disperse dye. Therefore, in this study, silica was added to water-dispersed polyurethane resin to improve dye fastness. To distribute the $PUD-SiO_2$ mixture evenly in the water-dispersed polyurethane resin, sufficient stirring was done for a period of time. When the $PUD-SiO_2$ mixture(PUD 1-5%) is applied to the substrate, it is confirmed through SEM that the mixture is uniformly applied without particle condensation. The results showed that silica with a diameter of 4~12nm and BET of $200{\sim}380g/m^2$ had the ability to improve dispersibility and fastness.

• 한국염색가공학회지
• /
• 제31권2호
• /
• pp.88-97
• /
• 2019

In this study, when printed on a nylon material, the color strength and fastness are lower than that of a polyester material, and the nylon material shrinks due to heat and pressure, resulting in poor design and poor compatibility. To overcome this problem, we investigated the possibility of transfer DTP by adding pre-treatment process to nylon transfer DTP process. For the basic study of pre-treatment preparation, we used pure nylon material which is not compounded and dispersion ink and transfer paper applied to existing PET transfer DTP. Pre-treatment preparations were classified into three types of acryl-base polymer and pre-treated with nylon and then applied to transfer DTP to confirm their color strength and fastness. The color strength of the pre-treated nylon material increased and poly-methyl-acrylate amulsion pre-treatment showed the best color at $210^{\circ}C$, 1.5m/min and 0.3MPa. The nylon material pre-treated with washing, friction, and light fastness was judged to be more excellent and stable.

• 패션비즈니스
• /
• 제9권2호
• /
• pp.71-83
• /
• 2005

In this study, we reviewed the color changes accompanying the laundering, wash fastness, and abrasion fastness of chitosan-treated cochineal-dyed fabrics. The treatment methods were classified into two based on the chitosan treatment: (Method 1): fabric specimens were pre-treated with chitosan prior to the dyeing procedure in salt form. (Method 2): the state of chitosan acid salt formation, coated on the yarn surface, was destroyed and neutralized prior to the dyeing process. The changes in the chitosan treatment methods bear more important meaning in view of the durability. In Method 1, it is highly likely for the chitosan to be detached from the surface by water during laundering since the chitosan is coated as acid salt state. In Method 2, the resistance d the chitosan to water was supposed to revive since the chitosan would return to its original state. Differences in the resistance of the chitosan treatrrent, however, according to the Method 1 and Method 2, fell short of our expectations. In Method 2, the wash fastness did not improve as we expected since the bond between the fibers comprising fabric specimens and the chitosan is not high even if the chitosan itself has high resistance to water.