• 한국염색가공학회지
• /
• 제32권3호
• /
• pp.135-141
• /
• 2020

The primary and secondary alcohols in cellulose reacted with acrylonitrile(AN) in the presence of strong alkalis to form cyanoethylated cellulose. The partially cyanoethylated cotton(CEC) fabric with AN in the presence of aqueous sodium hydroxide solution was described, including effects of treatment time and reagent concentrations. The weight increases of cotton fabric were shown to be linearly related to the treatment time, temperature and concentration of sodium hydroxide. The physical properties such as shrinkage ratio and tensile strength were proportional to the weight increases without significant impact on elongation. But the moisture regain decreased with decreasing hydrophilicity. The degree of substitution(DS) and transfer ratio were linearly related to the weight increases. In the CEC with increasing weight up to 24.9%, it has been obtained with DS up to 0.63-0.67 cyanoethyl groups per anhydroglucose and transferring ratio up to 87.7%. The color fastness to washing by sublimation transfer printing was improved by the cyanoethylation.

• Journal of the Korean Wood Science and Technology
• /
• 제34권3호
• /
• pp.90-98
• /
• 2006

일반적으로 동물성 섬유(견, 모)는 단백질 섬유로서 매염제를 쓰지 않고도 염색이 잘되는 편이지만, 식물성 섬유인 면, 마 등은 섬유소이므로 색소의 흡착이 불량하여 염색성이 우수한 염색 보조제로 전처리 한 다음, 주매염제를 처리해야 좋은 결과를 얻을 수 있다. 식물성 섬유의 일종인 인피섬유로 이루어진 한지의 천연염색 효과 향상을 위해 염색 보조제로 콩즙, 탈지분유 및 키토산을 한지에 전처리를 한 다음, 황벽나무 수피, 찔레나무 지엽, 꼭두서니 및 자초 뿌리로부터 염료를 추출하고 $Al_2(SO_4)_3$와 $Fe(OH)(CH_3COO)_2$를 매염제로 사용하여 염색한 한지의 염색특성과 견뢰도를 분석하였다. 천연염색 한지의 색상 및 색차 분석결과 염색 보조제를 사용한 것이 모든 염료에서 무처리 시료보다 염색이 양호하였으며, 사용한 염색 보조제 중에서는 콩즙으로 전처리한 시료가 가장 우수한 염색 효과를 나타내었다. 촉진노화 시험을 통한 천연염색 한지의 견뢰도를 분석한 결과 자초가 가장 불량한 것으로 나타났으며, 꼭두서니가 비교적 우수한 것으로 나타났다.

• 한국염색가공학회:학술대회논문집
• /
• 한국염색가공학회 2008년도 제38차 학술발표대회
• /
• pp.102-104
• /
• 2008

Natural indigo dye was prepared by extracting from Polygonum tintorium, precipitating with calcium hydroxide, and dried. Dyeing was carried out using sodium hydrosulfite as a reducing agent for the prepared natural indigo powder. K/S value, color property, and colorfastness of dyed fabrics were investigated. Optimum dyeing conditions obtained were 60$^{\circ}C$, 20min. Regardless of indigo dye and sodium hydrosulfite concentration, Munsell hue of dyed fabrics was PB color. Compared to the dyed fabric with both sodium hydroxide and sodium hydrosulfite, those with sodium hydrosulfite only showed higher color strength(K/S value). Colorfastness of dyed fabrics showed high rating except of wash/dry cleaning fastness of silk fabrics dyed low color strength.

• 한국의류학회지
• /
• 제37권4호
• /
• pp.506-513
• /
• 2013

Rubia cordifolia L (Indian madder) contains red color purpurin (65-67%) and yellow color munjistin (10-12%) as well as nordamncanthal (9-10%). Purpurin is a traditional red dye. The purpose of this research is to increase the dyeability of silk and light fastness of dyed silk fabric. We dyed silk fabrics after pretreatment to remove the yellow component of madder using various solvents such as ethyl acetate, ethanol, methanol, chloroform, and acetone. The total K/S value was the highest in the case of chloroform and reflectance was the lowest at the red color region from 470nm to 530nm. Chloroform dissolved the yellow color of Rubia cordifolia; in addition, we found that the total K/S value increased and the ${\Delta}E$ value decreased by chloroform pretreatment for silk dyeing.

• 한국가정과학회지
• /
• 제9권3호
• /
• pp.63-68
• /
• 2006

Walnut colorants were extracted from walnut hull and their dyeing properties on cotton were investigated. Effect of dyeing conditions on dye uptake and effect of mordanting on dye uptake, color change and colorfastness were explored. Walnut colorants showed low affinity to cotton compared with wool and its isotherm adsorption curve was Freundlich type. It was considered that hydrogen bonding and van der Waal's force were involved in the adsorption of walnut colorants onto cotton. The dyed cotton showed YR color and there was no significant color change as pH changed. The dyed cotton showed generally high colorfastness except fastness to washing and light. Mordanting did not improve dye uptake and colorfastness, and not affect color of the dyed cotton significantly.

• 복식문화연구
• /
• 제12권1호
• /
• pp.1-11
• /
• 2004

This study was carried out on the process of natural dye substances which can flock ultraviolet rays without producing harmful substances by pollution, germs, etc. While making human body safe in contact, extracting Gardenia, Sappan wood, Radix scutellariae, Cromwell, Mugwort, Gallnut, Lac. Those are used for curing diseases, dyeing silk cloth with those extracts, and examining the color fastness, Ultraviolet protection. From this study, the following conclusion was produced. Brightness was lower in pre-mordanting than in post. And color difference showed that Radix scutellariae was the highest. Aluminum-mordanting showed a higher color difference than Fe. Colorfastness to washing was high in all samples, and the degree of color-changing by washing was the highest in the sample dyed by gardenia, pre-mordanted gallnut showed the highest degree. Colorfastness to perspiration was the highest in gardenia. UV-A test showed that all samples a high rate of 85% or higher compared with test white cloth. Especially, post-mordanted radix scutellariae, pre-mordanted gallnut and post-mordanted sappanwood showed a superior blocking rate.

• 한국염색가공학회지
• /
• 제22권1호
• /
• pp.71-76
• /
• 2010

In this study the optimum dyeing conditions and blocking effect of UV deodorization efficiency of Ligustrum japonicum Thunb were investigated. Colorants were water-extracted from Ligustrum japonicum Thunb fruit and freeze-drided to obtain colorants powder. The effects of dye concentration, dyeing temperature, dyeing time, and the number of dipping count were studied. Fastness to dry cleaning, rubbing, perspiration, and light were measured according to KS K 0644, KS K 0650, KS K 0715 and KS K 0700, respectively. In order to examine the dyeability according to dyeing conditions, reflectance of fabrics were measured by using UV/VIS spectrophotometer. The bath ratio was 1:20. Dyeing concentration was 100, 200, 300, 400 and 500% on the weight of fiber. Dyeing time was 20, 40, 60, and 80 minutes. Dyeing temperature was 20, 40, 60, 80, and $100^{\circ}C$. The infrared high pressure dying machine was used. As dyeing concentration increased, dye adsorption increased up to 400% and it slowed down. Dye uptake was increased with raising themperature up to $80^{\circ}C$ and it slowed down. Dye adsorption occurred rapidly at first 20 minutes and then it slowed down and reached almost maximum dye uptake at 60 min. Dye uptake increased by repeated dyeing. Therefore, it is considered that optimum dyeing condition is 400%(o.w.f.), $80^{\circ}C$, 60 min. And repeated dyeing improves dye uptake. Color fastness to dry cleaning and rubbing was good, but light fastness and perspiration fastness was not good. Blocking effect of ultraviolet radiation and deodorization efficiency was good.

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

• 한국의류산업학회지
• /
• 제17권6호
• /
• pp.1030-1038
• /
• 2015

The purpose of this study is to investigate the dyeability of crabyon fiber contained cotton towels after dyeing with gallut. In this study, the colorants of gallnut were extracted with boiling water at 60℃ and 60min. Crabyon, composite fiber of Chitin/Chitosan and cellulose, is manufactured by uniformly blending Chitin/Chitosan and cellulose viscose and extruding the blended viscose into spin-bath. Cotton towels with crabyon fiber dyed with extracted solution from gallnut according to concentration, temperature and time. Crabyon fiber contained cotton towels dyed using gallnut were pre of post-mordanted using Al, Cu, and Fe. The dyeability(K/S) and color characteristics(L^*, a^*, b^*, C, and h(color angle)) of dyed crabyon fiber contained cotton towels were measured by computer color matching machine and photographs. The crabyon fiber composition of cotton towels was conformed by amide peak(-CONH-) of chitin or chitosan of FT-IR spectroscopy. The results obtained were as follows; The amide peak of crabyon fiber contained cotton towels appeared at about 1652 cm⁻¹. The dyeability of crabyon fiber contained cotton towel was increased gradually with increasing concentration of gallnut dyeing solution and saturated at about 150%(o.w.f). The optimum dyeing temperature and dyeing time were 90~100℃ and 80minutes expectively. The crabyon fiber contained cotton towels were dyed reddish yellow by non, Al, and Cu mordanting, reddish blue by Fe mordanting, respectively. The fastness to washing according to concentration of gallnut in and mordanting method indicated good grade result as more than 3~4 degree in all conditions.

• 감성과학
• /
• 제17권1호
• /
• pp.93-104
• /
• 2014

본 연구는 수분감응형섬유와 이들로 만들어진 니트의 흡습성, 건조특성 그리고 수분자발신장성과 같은 물성과 이들 니트소재의 여러 가지 염색시간과 온도에 따른 염색특성을 조사한다. 이를 위해서 HEF와 spandex를 심사로 사용하고 일반 PET와 aerocool 필라멘트를 커버링사로 사용한 3가지의 커버링사 시료를 준비하고 이들을 사용하여 3가지의 니트시료를 편직하고 이들을 염색온도와 시간을 달리하여 염색을 실시하였다. 3가지 니트시료의 흡습성, 건조특성 그리고 가역적 수축현상 등의 물성을 측정하고 실의 특성과 함께 분석하였으며 이들 니트시료의 용성을 FAST 시스템을 사용하여 측정하고 분석하였다. 그리고 이들 니트시료의 염착성, 색차 그리고 세탁견뢰도 등과 같은 염색특성을 측정하고 수분감응형 니트소재의 염색공정특성을 알아보기 위해 염색시간과 온도에 따른 이들 염착특성을 분석하였다.