• 한국염색가공학회지
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• 제32권4호
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• pp.217-225
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• 2020

In this study, the dyeing characteristics of nylon fabric which is dyed with supercritical fluid were investigated. There were two dyes used in the dyeing experiment: C.I. Disperse Red 167 and C.I. Disperse Violet 93. Dyeing temperature, pressure, and leveling time were fixed at 110℃, 250bar, 60minutes, and the experiment was conducted with dyeing concentration of 0.1, 0.3, 0.5, and 0.85% o.w.f. The analysis of the experimental results was found out through the measurement of washing fastness and color coordinate. In addition, the calibration curve of each dye was drawn up and the amount of remaining dye was checked by measuring the absorbance of the residual dye. As a result of color difference measurement, as the concentration increased, the L⁎ value decreased and the K/S value increased. However, the increase in K/S value compared to the amount of input decreased as the concentration increased. The comparative experiment on the amount of residual dye(C.I. Disperse Red 167) in the pot showed that 99.14% of the amount was dyed at the concentration of 0.1% o.w.f, while it rapidly decreased to 77% at 0.85% o.w.f. C.I. Disperse Violet 93 dye also decreased from 0.5% o.w.f to 93.91%. In the washing fastness experiment of both dyes, the level of washing fastness began to decrease from samples dyed at 0.5% o.w.f. It may be because the simply absorbed dye was produced instead of completely being fixed in the amorphous region of the nylon fiber.

• 한국의류산업학회지
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• 제7권5호
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• pp.542-546
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• 2005

This study was investigated to establish the optimum conditions of dyeing silk fabric with Brassica campestris. This experiment was done under different dyeing conditions of dye concentration, dyeing temperature, dyeing time, dyeing repeating times, and mordants which were treated pre, syn, and post methods. The effects of dyeing conditions and mordanting were evaluated in terms of dyeaffinity(K/S value) and CIE-Lab color factors. Also, the effect of mordanting on color fastnesses was assessed. The dyeaffinity increased remarkably as dye concentration increased up to 200% owf. The dyeaffinity increased continuously with dyed temperature and reached dyeing equilibrium at $80^{\circ}C$. The maximum dyeaffinity was observed at 30minutes of dyeing time. In the relationship between the K/S value and dyeing repeating times, the K/S value became higher as repeating time was increased. The changes of surface color and colorfatness of dyes were not increased greatly on all mordanting states. The extracts of Brassica campestris produced mainly yellow color in silk fabric. The antimicrobial activity existed slightly as the ratio of 22.7%.

• 대한가정학회지
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• 제46권6호
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• pp.13-19
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• 2008

In this paper, the dyeing ability of the volcanic ash dyeing on cotton knitted fabrics were investigated. Acrylic copolymer was used to improve the depth of fabric color in the dyeing process. K/S values of dyed fabrics were measured to examine the dyeing properties. Two different classes of dyeing process were tested; (1) volcanic ash dyeing after pretreatment and (2) simultaneous co-treatment with volcanic ash and acrylic copolymer. In the first process, the effects of parameters such as the concentration of volcanic ash, concentration of Na2S04, dyeing time, dyeing temperature and pH of dyebath were noted. In the second process, the effects of parameters such as concentration of acrylic copolymer, dyeing time and temperature, and drying temperature were noted. Experimental results showed that the co-treatment of acrylic copolymer improved the dyeing properties of cotton knitted fabrics with volcanic ash. For the first dyeing experiment, concentration of dispersing agent was 0.1%, concentration of volcanic ash was 4%, treatment time was 20minutes, concentration of $Na_2SO_4$ was 2%, treatment temperature was $60^{\circ}C$ and treatment pH of dyebath was neutral. In the second dyeing experiment, concentration of acrylic copolymer was 2%, treatment temperature was $80^{\circ}C$, treatment time was 40 minutes, and treatment drying temperature was $150^{\circ}C$.

• The International Journal of Costume Culture
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• 제13권1호
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• pp.62-66
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• 2010

Of all the ways that energy is consumed within textile industry, few are as high energy-expending as dyeing process. The energy consumption in dyeing process amounts to 77% of total fuel consumption, 54% of total electricity use. A technical development in terms of efficient saving energy and time as well is required in the process of dyeing textiles. Recently, dyeing experts are investigating new technologies can conserve energy grafting into microwaves, radio waves, infrared lights, etc. Dyeing industry in Korea, however, the research related to energy conservation has been rarely conducted. Accordingly, this study aims to examine the possibility where especially microwaves could be applied to reduce the energy use and enhance dyeing process skill. This study performs the experiment in which microwave is employed as heating condition in dyeing and figures out as color yield being promoted, bathochromic effect would be achieved. Applying microwaves in dyeing process is expected to lower the carbon emission, energy and time wasted, ultimately exalt economic efficiency.

• Fibers and Polymers
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• 제7권4호
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• pp.344-351
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• 2006

This paper is intended to determine the optimal processing parameters applied to the dyeing procedure so that the desired color strength of a raw fabric can be achieved. Moreover, the processing parameters are also used for constructing a system to predict the fabric quality. The fabric selected is the nylon and Lycra blend. The dyestuff used for dyeing is acid dyestuff and the dyeing method is one-bath-two-section. The Taguchi quality method is applied for parameter design. The analysis of variance (ANOVA) is applied to arrange the optimal condition, significant factors and the percentage contributions. In the experiment, according to the target value, a confirmation experiment is conducted to evaluate the reliability. Furthermore, the genetic algorithm (GA) is combined with the back propagation neural network (BPNN) in order to establish the forecasting system for searching the best connecting weights of BPNN. It can be shown that this combination not only enhances the efficiency of the learning algorithm, but also decreases the dependency of the initial condition during the network training. Most of all, the robustness of the learning algorithm will be increased and the quality characteristic of fabric will be precisely predicted.

• 한국의상디자인학회지
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• 제14권4호
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• pp.151-162
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• 2012

Regarding experimental study on the dyeing properties of natural dye, I have dyed silk fabric with Styphnolobium japonicum, sappan wood, and indigo. The results of the experiment have been analysed by wavelength of maximum absorption, K/S and CIE Lab chromaticity co-ordinated. The results are as follows: In case of complex dyeing using Styphnolobium japonicum and sappan wood, dyeing with sappan wood, which is red related color, after dyeing with Styphnolobium japonicum, which is yellow related color, is more efficient. When dyeing was maden by complex of Styphnolobium japonicum and sappan wood, Dyeing method by the order of "Styphnolobium japonicum${\rightarrow}$sappan wood${\rightarrow}$mordanting" made the best result of complex dyeing. In case of complex dyeing using Styphnolobium japonicum and Indigo, dyeing with Styphnolobium japonicum after the indigo made the best result. When dyeing with indigo first, and then Styphnolobium japonicum, yellow color was not well dyed, and low level of saturation caused lusterless color. Ordering of Styphnolobium japonicum${\rightarrow}$sappan wood${\rightarrow}$indigo made the best result of complex dyeing in case of complex dying with Styphnolobium japonicum and indigo. Dyeing order, sappan wood first and then indigo last method shown 560~640 nm wavelength of maximum absorption which most color was blue related. In contrast, Indigo first and then sappan wood method shown 460~560nm wavelength of maximum absorption which color was red related. Complex dyeing with sappan wood and indigo was showing lusterless color. In case of dyeing with red and blue, dyeing with sappan wood and indigo was not appropriate.

• 대한가정학회지
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• 제42권4호
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• pp.119-125
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• 2004

In this paper, the effect of the volcanic ash dyed on cotton knitted fabrics was studied in various ways. A cationic agent was used to improve the depth of color of the fabric in the dyeing process. K/S values of dyed fabrics were measured to examine the dyeing properties. Cationic agent pretreatment, followed by dyeing with volcanic ash, was tested. In the dyeing experiment, the effects of a wide range of parameters such as the concentration of cationic agent, treatment time, treatment temperature and treatment pH of the dyebath were studied. Experimental results showed that the pretreatment with cationic agent improved the dyeing properties of cotton knitted fabrics with volcanic ash. At this point, concentration of cationic agent was 4%(on weight of fabric), treatment time was 40minutes, treatment temperature was 80 C and treatment pH of the dyebath was a neutral condition.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2010년도 제3회 국제학회
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• pp.167-168
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• 2010

Non coating type Low melting yarn(L/M PET) not to use the polyurethane resin causing some problems was knitting and evaluated its dyeing characteristics, heat setting properties and flame-retardant properties without flame retardant agent or flame retardant fabric. In order to investigate the dyeing property of fabric of L/M PET, the dyeing of L/M PET was experimented at each different dyeing temperature. Higher exhaustion yield was achieved at lower temperature of L/M PET compared to regular PET. According to result of the study for the heat setting properties of L/M fiber, the K/S value of dyed L/M fiber increased as much as the heat setting temperature did. The experiment for the light fastness reached similar result to dyed PET. However washing fastness in L/M fiber showed lower grade compared with regular PET. flame-retardant efficiency of L/M PET without flame retardant agent or flame retardant fabric measured by $45^{\circ}$ burn test and Contact burn test. The flame?retardant performance of the sample was carried out according to the Korea Fire-fighting Standard.[KOFEIS 1001].

• 헤리티지:역사와 과학
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• 제52권2호
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• pp.254-267
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• 2019

협힐(��纈)은 직물을 두 개 또는 그 이상의 조각한 목판 사이에 끼워 넣은 후 염색하여 무늬를 표현하는 방염(防染) 기법이다. 통일신라 흥덕왕 9년 복식금제(服飾禁制)에는 육두품녀(六頭品女)와 오두품녀(五頭品女)의 여러 가지 복식 품종에 협힐 사용을 금한다는 기록이 있다. 이것으로 미루어보아 협힐 직물이 당시 널리 사용되었으며 협힐 기법도 통일신라시대 또는 그 이전에 완성되었음을 추측할 수 있다. 그러나 문헌 자료에는 용어만이 언급되었을 뿐 염색 기법이나 정의에 대한 내용은 확인되지 않고 유물도 고려시대의 것만 극히 소량 남아 있어 협힐의 유형이나 특징을 알 수 없다. 공예 기술은 각 나라마다 정치 경제 사회 문화 등의 요인에 의해 변화하며 주변국과의 교류를 통해 발전한다. 따라서 본 논문은 주변국인 중국과 일본의 문헌 및 유물을 조사 분석하여 협힐 유형과 특징을 살펴보았다. 이를 통해 협힐은 국가별 특징보다 무늬를 나타낼 때 사용하는 색의 가짓수에 따라 단색(單色)과 다색(多色)으로 나누어지며, 무늬 구조에 따라 단독(單獨) 좌우대칭(左右對稱) 상하좌우대칭(上下左右對稱)으로 분류되는 것을 알 수 있었다. 또한 중국과 일본에서 전승 및 재현되고 있는 염색 기법의 사례를 연구한 결과 직물에 무늬가 잘 드러나도록 하기 위해서는 사용하는 색의 가짓수와 무늬의 특징에 맞추어 협힐판을 양각(陽刻) 투각(透刻) 음각(陰刻)으로 각각 다르게 조각하여야 하는 것을 확인하였다. 우리나라에서 무늬와 색이 온전히 남아 있는 유일한 유물인 1302년 아미타불복장 소화문협힐견을 실험 대상으로 삼고 염색 기법 사례 연구에서 얻어진 기초자료를 근거로 실증적 실험을 통해 협힐 기법을 재현하였다. 본 논문은 추후 계속 연구할 협힐 기법 재현에 활용될 기초자료를 구축하고, 전승되고 있지 않는 협힐 기법의 재현을 시도하여 기법의 특징을 확인한 것에 의의를 두고자 한다. 그리고 현대적인 무늬 염색 기법과 접목시켜 한국적 무늬 염색의 세계를 넓히며 재창조하는 데 보탬이 되길 기대한다.

• 화훼연구
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• 제19권2호
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• pp.110-114
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• 2011

본 실험은 절화장미 'Akito' 품종을 재료로 하여 4가지 색상(yellow, orange, purple, blue)을 동시에 염색하기 위한 최적 조건을 구명하고자 수행하였다. 염료용액의 pH를 3.5에서 9.0으로 처리하였을 경우, pH 가 3.5에서 4가지색 모두 흡수속도가 빨랐다. 꽃의 착색에서는 각 pH별 차이가 없었고 잎에서는 pH의 차이보다는 색상의 차이에 따라 purple과 blue에서 색 발현이 현저하였다. 염료 별 농도처리에서 $10g{\cdot}L^{-1}$ 농도에서 가장 선명한 색 발현이 되었으나 유의성은 없었고 염색의 종류에 따라 유의차를 보였다. 염색에 미치는 처리시간은 10분 후에 파스텔 색상이 발현되었고, 30분 후에는 꽃의 색상이 가장 선명하였지만 동시에 잎에서도 착색이 진행되었다. 이상의 결과로부터 절화 장미 'Akito'의 염색 시 pH 3.5, 염색농도 $5-10g{\cdot}L^{-1}$, 처리시간 10-30분간 처리가 화색의 발현 및 품질의 완성도를 높이는데 적당하였다.