• 한국염색가공학회지
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• 제15권4호
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• pp.73-79
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• 2003

It is generally known that cotton treated with liquid ammonia has better soft handle, wrinkle recoveries and stability of appearance as compared with the alkali mercerized cotton. In this study, the various cotton fabrics treated with liquid ammonia$(NH_3)$, sodium hydroxide(NaOH) and sodium hydroxide(NaOH)/liquid ammonia$(NH_3)$ and untreated cotton fabric were investigated and compared in terms of physical properties and dyeing behavior. As the result, the strength of four kinds of cotton fabrics were similar. But the elongation of cotton treated with liquid ammonia increased slightly. Liquid ammonia treatment reduced the crystallinity of cotton and the crystalline structure of cotton transformed from cellulose 1 to mixed structure of celluloseIand III. In dyeing, dyeing rate decreased but equilibrium dye uptake increased by liquid ammonia treatment of cotton fabrics.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2008년도 제39차 학술발표회
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• pp.45-46
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• 2008

Dyeing and fastness properties of acid dyeable polyurethane have been compared with those of regular polyurethane. The Exhaustion and color strength on acid dyeable polyurethane was relatively better than regular polyurethane at heavy depth dyeing. The washing fastness properties of acid dyes on acid dyeable polyurethane were similar to those of regular polyurethane.

• 한국염색가공학회지
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• 제16권1호
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• pp.34-39
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• 2004

Dyeing properties of Glycyrrhizae Radix was investigated with silk fabrics. Dyeing water is a type of chalcone, it showed yellow in IR spectrum. K/S value showed high in following conditions; Glycyrrhizae Radix $200g/1\ell4 water, $80^{\circ}$ of dyeing temperature, 90 minute of dyeing time. Glycyrrhizae Radix dyeing water has higher K/S value in alkalinity(pH9) than in neutrality(pH7) or acidity(pH3) conditions. K/S value showed highest in pH5 premordant method of alkalinity dyeing water condition. The color of silk fabric dyed with Glycyrrhizae Radix is yellow. The change of color did not show by mordant treatment. K/S value showed higher in mordant treatment than nonmordant. Light fastness showed over 3 degree in nonmordant, premordant, simmordant(Al,Cu,Fe) and postmordant(Cu). Water fastness showed over 3 degree in dyeing water(pH3, pH5, pH7). Dry cleaning fastness showed over 3 degree in all dyeing methods. Washing fastness is showed in 2-3 degree; Al in nonmordant, premordant, simmordant and Cu in simmordant are 2-3 degree. Perspiration fastness is nearly 3-4 degree in premordant and simmordant. Perspiration fastness shows high in premordant, simmordant than postmordant. The fastness of light, water, dry cleaning, washing, perspiration shows better nonmordant, premordant, simmordant than postmordant method.

• 복식문화연구
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• 제25권5호
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• pp.648-655
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• 2017

This study measured dyeing properties under different dyeing conditions and levels of antimicrobial activity when man-made fibers are dyed with gallnut, including rayon, tencel, tencel blended fabric, soybean fiber, and nylon non-mordanted. The dye up-take (K/S), color ($L^*a^*b^*$), and color differences (${\Delta}E$) were measured with a colorimeter, and the number of bacteria present in the dyed fabrics were determined using Staphylococcus aureus and Klebsiella pneumonia as strains. The results are as follows: First, the optimal dyeing conditions for man-made fibers dyed with gallnut are 60 minutes of dyeing time and a $80^{\circ}C$ dyeing temperature. Second, gallnut dye is most effective on soybean fiber and then, in descending order of effectiveness, on nylon, rayon, tencel, and tencel blended fabric. This means that dyeing properties of nitrogen containing fibers are excellent when using gallnut. Third, all man-made fibers are dyed brown with gallnut. This implies dyeing possibility of man-made fibers about gallnut dye, so development and supply of natural dyed goods of man-made fibers can be increased. Fourth, in all man-made fibers dyed with gallnut extract, both Staphylococcus aureus and Klebsiella pneumonia show 99.9% reduction ratios of fungistasis, which indicate antimicrobial activity. Therefore, safe, functional, man-made materials can be developed to relieve symptoms from and treat patients with skin ailments.

• 디지털융복합연구
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• 제16권12호
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• pp.593-602
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• 2018

본 연구의 목적은 적색계 천연염료를 이용한 견직물의 무매염 염색을 다룬 국내논문들을 고찰하여 무매염 염색의 염색성을 알아보는 것이다. 연구대상인 천연염재는 자색 고구마, 봉선화, 오디, 광나무 열매, 구아바 잎, 단삼, 히비스커스 꽃, 복숭아나무 전정가지로 총 8가지이다. 염색실험의 결과는 색차식에 의하여 $L^*$, $a^*$, $b^*$, C 및 ${\Delta}E^*$와 Munsell표에 의한 H V/C, Kubelka Munk식에 따라 K/S값을 산출하여 표면색을 측정하여 살펴보았다. 염색실험 변인은 염액농도, 염색온도, 염색시간, 염색반복횟수이며, 변인의 변화에 따라 염색성과 색채특성을 알아보았다. 문헌고찰 결과, 염색실험 변인은 견직물에 대한 천연염료의 염착성과 상관관계가 있을 뿐만 아니라 적색 발현에도 상관관계가 있었다. 본 연구를 통해 천연염색 과정에서 환경오염을 일으키는 반복적인 염색이나 매염제 사용 등을 하지 않아도 적색이 다양하게 발현되고 염색성도 우수할 수 있음을 보였다.

• 한국염색가공학회지
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• 제29권3호
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• pp.105-114
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• 2017

High tenacity polyethylene(HTPE) fiber is one of the most important synthetic fibers which possesses outstanding properties such as low density, excellent surface hardness and scratch resistance, superior electrical insulation and low cost. In this study, we dyed high tenacity polyethylene filaments using three different solvent dyes based on log P calculations. We evaluated the dyeing characteristics of dyed high tenacity polyethylene filaments based on dyeing temperature, dyeing time and concentration of solvent dyes. We also analyzed the tensile strength and elongation properties of dyed high tenacity polyethylene filaments with various dyeing temperature and dyeing times. The optimized dyeing condition can be found at $120^{\circ}C$ for dyeing time of 1 hour with 4%(o.w.f.) of solvent dyes.

• 한국염색가공학회지
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• 제18권5호
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• pp.8-14
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• 2006

An earthworm protease, Lumbricus rubellus, was used to improve the dyeing properties of protein fibers such as wool and silk. The optimal condition for the activity of the earthworm pretense was about $40^{\circ}C$ at pH 7. The wool and silk were treated with the protease extracted from an earthworm and the K/S values of the dyed wool and silk were measured using a spectrophotometer in order to compare the dye uptake. The pretense treatment enhanced the dyeing properties of protein fibers without severe changes in mechanical properties. The surface appearances of pretense-treated fibers were observed by microscopy analysis.

• 한국의류산업학회지
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• 제17권5호
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• pp.838-843
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• 2015

In this study, a cotton knit was dyed with elm bark extract; subsequently, the dyed fabric was measured according to the types of mordants and the preprocessing cationizers used. Additionally, antibiosis against super bacteria was examined. The results follow. First, the color of the dyed cotton knit appeared reddish and yellowish for fabrics treated with non-mordants and mordants. When preprocessing with a cationizer was conducted, the dyeing properties were the best. Second. even when mordants were not used for dyeing, color fastness after washing, sweating, and rubbing was generally good Grade 4 and 5. Color fastness after exposure to sunlight was the best Grade 4 for fabric prepared with ferrous sulfate as the mordant. Third. as for antimicrobial properties, or resistance to super bacteria, the growth of bacteria was suppressed in a meaningful way for fabrics treated with non-mordants and mordants, compared to the control group fabric. The dyeing methods with the most powerful antimicrobial effects were dyeing after preprocessing with a cationizer and preparing fabric with copper sulfate as the mordant. The results stated above show that in case of dyeing with elm bark extract, preprocessing of the cotton knit with a cationizer and dying with copper mordant displayed high levels of antimicrobial properties that were useful for resisting super bacteria. Of these the dyeing properties were the best when preprocessing with a cationizer.

• 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.

• 한국염색가공학회지
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• 제12권6호
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• pp.396-403
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• 2000

The purpose of this study was to investigate the dyeing properties of silk, wool, nylon and poly(ethylene teraphtlate)〔PET〕 fabrics dyed with Tumeric(Curcuma longa) extracts. The dyeing property and color fastness were investigated by using the extracts and the post mordanting with Aluminum, Copper and Iron salts. In the UV-visible spectra, the maximum absorption of wavelength of the extract with methyl alcohol appeared at 420nm, and that of the extract with distilled water was at 415nm. Increasing the dyeing temperature, the K/S values of dyed fabrics were increased. The optimum dyeing condition was 30∼60 minute of dyeing time at pH 5∼5.6. Surface colors of silk and wool became dark by using mordants compared to those of nylon and PET fabrics. The drycleaning fastness of fabrics dyed with the extracts was good. The laundering and light fastness were improved by using mordants.