• 패션비즈니스
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• 제7권6호
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• pp.50-56
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• 2003

Chitosan has been widely applied to the products in various industries such as textile fabrics, apparels, foods, medical area, etc. Cochineal has long been employed as one of natural dyestuffs in the textile industry. The effect of chitosan pre-treatment on the low-stress physical and mechanical properties of cochineal-dyed fabrics including cotton, silk, nylon and polyester fabrics was investigated in this study. The chitosan treatment and mordanting of the fabrics changed the bending, shear, compression, and surface properties of the fabrics. In cotton fabric specimens, while the increase of B(bending rigidity) of cotton is relatively high, the increase of G(shear rigidity) of cotton is relatively low. In nylon and PET fabric specimens, while the increase tendency of B is relatively low, that of G is high compared to the corresponding cotton fabrics.

• 패션비즈니스
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• 제13권2호
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• pp.145-153
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• 2009

By introducing chitosan treatment prior to dyeing, examination was given to the effect of chitosan coated on the surface of fabrics on the color change of dyed fabric based on th e change of ${\Delta}E$, a*, and b* values. At the same time, the dyeing mechanism of Caesalpinia sappan dyestuff was predicted by the investigation of the change of air-permeability ac cording to the chitosan treatment. The change of elution was investigated by the examination of the elution of metallic ions employed as mordants after soaking dyed fabrics in the solution of alkaline perspiration ba sed upon the fact that chitosan carries excellent absorption ability toward metallic ions.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2001년도 추계학술발표회 논문집
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• pp.3-11
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• 2001

Fundamental studies at the CSIRO division of Wool technology and ICI on the diffusion of dyes into wool〔1,2〕have let to development of a new approach to wool dyeing. In this method, the cell membrane complex of wool is modified before dyeing by treatment under mildly alkaline conditions with a special chemicals. Wool pretreated with ethoxylated quaternary ammonium salt has an increased rate of dyebath exhaustion and dye penetration early in the dyeing cycle. This enables the treated material to be dyed below the boil for a similar time to the conventional cycle. This technique can be used on untreated and shrinkresist-treated wool and wool/nylon blends. In addition to good macro-levelness and excellent coverage of tippiness, the low temperature dyeing process give higher exhaustion levels of dyestuffs and insect-resist agent and hence cleaner effluent liquors, compared with conventional dyeing process. Low Temperature Dyeing process cause significantly less fiber damage than conventional way. The reduction in damage is reflected in improved processing performance of the dyed wool.

• 패션비즈니스
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• 제9권2호
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• pp.57-70
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• 2005

Chitosan pre-treatment of the fabrics prior to the dyeing processes has been reported to increase the uptake of natural dyestuffs. In this study, cotton, nylon, and PET fabric specimens were pre-treated with chitosan prior to the dyeing (Method 1), or the state of chitosan acid salt formation, coated on the yarn surface, was destroyed prior to the dyeing process by alkaline neutralization process (Method 2). In case of the acid salt formed cotton (Method 1), treated fabrics showed more yellowish color component of cochineal, while alkali-treated (Method 2) cotton showed more uptake of bluish color of cochineal.

• Environmental Engineering Research
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• 제24권1호
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• pp.99-106
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• 2019

Using the abandoned agricultural by-product corncobs, the most commonly used methylene blue (MB) dyestuffs were removed. This experiment is very meaningful because it is the recycling of resources and the use of environmentally friendly adsorbents. According to the Hauser ratio and porosity analysis, the corncob has a good flow ability of the adsorbent material and many pores, which is very advantageous for MB adsorption. As a result of the experiment, MB concentration of less than 0.005 g/L was very efficiently removed with 10 g/L of bioadsorbent corncob and the maximum adsorption capacity of corncob for MB dyes was obtained at 417.1 mg/g. In addition, adsorption process of MB onto corncob was a physical process according to adsorption energy analysis. Corncob can efficiently and environmentally remove MB in aqueous solution, and is very cost effective and can recycle the abandoned resources.

• 보존과학회지
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• 제35권1호
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• pp.1-10
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• 2019

This study provides a comprehensive evaluation of general characteristics of sized silk fabrics for the painting purpose. Two particular types of silk fabrics used for painting background were compared: a recreation of historical material and a mass produced material of present day. The sizing process made the surface characteristics of the silk fabrics more suitable for painting. The dyeing properties of the fabrics were related to the surface area of the fabrics, and had no significant effect on their mechanical properties. The antibacterial activity of the tannin-based natural dyestuffs were maintained after the sizing. The performance assessment by the KES-FB system showed that the fabrics are more prone to deteriorate after the sizing because the glue layer receives the most of the physical stresses.

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

• 한국자원식물학회지
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• 제18권1호
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• pp.186-193
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• 2005

천연염료로서 금계국의 이용가능성과 금계국 식물체에서 추출한 염료를 이용한 천연염색시 천연매염제 처리농도, 매염방법 및 종류에 따른 견직물의 염색성을 조사하였다. 금계국 추출물로 견직물을 염색한 결과 표면색상은 무매염시 Y계열로 나타났으며, 매염처리시는 Y 및 YR 계열로 나타나 천연 염료로서의 이용 가능성이 충분했다. 동백나무 회즙, 굴껄질 회즙, 노린재 나무 회즙을 $10\%,\;20\%,\;30\%$ 농도로 매염처리 한 후 견직물의 염색성을 조사한 결과 농도에 따른 표면색상 변화는 거의 없었으나 염착농도는 $20\%$에서 가장 좋았다. 견직물의 표면색은 매염처리 방법에는 큰 영향을 받지 않았으나 염착농도는 후매염, 선매염, 동시매염 처리구 순으로 높게 나타났다. 금계국 추출물로 천연염색한 견직물에 29종의 천연매염제를 처리한 결과 견직물의 표면색은 동백나무와 사스레피나무 회즙 매염처리구에서만 YR계열을 나타냈고, 그외 처리구에서는 Y계열로 나타났다. 또 천연매염제를 처리한 결과 염착농도는 무매염 처리구에 비해 월등히 높아져 천연매염제로서도 매염효과를 충분히 낼 수 있음을 확인되었다.

• 한국염색가공학회지
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• 제13권5호
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• pp.18-18
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• 2001

Natural colorants have attracted much attention all over the world because of their non-hazardous nature. The world is becoming increasingly aware of environmental issues, such as ozone layer depletion, water pollution and waste disposal problems. The use of synthetic dyestuffs for their synthesis and application in the dyeing industries has been criticized due to introduction of contaminants into the environment. This has led to the desire to turn to the traditional, and more natural way of life. In this study, the colorants of extract of Ginkgo biloba bark were analysed and their dyeing properties on silk, wool and cotton were studied. It was found that uv-visible absorption spectra of extract of Ginkgo biloba bark showed two strong absorption peaks in the range of 240∼400 nm. From the result of IR spectra, the major ingredient of extract of Ginkgo biloba bark seems to be the flavon which is one of the flavonoid derivatives. Silk, wool, and cotton dyed with the extract of Ginkgo biloba bark showed a reddish yellow color. Their color differences were increased drastically with repetition of dyeing by three times.

• 패션비즈니스
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• 제14권1호
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• pp.27-42
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• 2010

It was in the fifteenth century in Italy that men began to talk of a rebirth in the arts and literature. Today we consider the period to belong to the Renaissance. We noticed the splendour of costume and the important role it played, in the life of Italian society in that period. From elsewhere in Europe and also from the East, dyestuffs came to Italy overland or in shiploads. Red and blue, notably kermes and madder on the one hand, and indigo and woad on the other were fundamental textile dyes in Italy. Saffron was used for yellows, oak galls for blacks. Renaissance Italian costumes' main color symbolized various meaning. Red symbolized high rank, affection, lady, redemption and various cardinal virtueses. Yellow was evaded color which was symbolized the lower class, betrayal, and gold. Green symbolized penniless, youthfulness, hope and love. Blue symbolized humbleness, sincerity, knowledge and the Madonna. Purple symbolized nobility, vice and various meanings. Black symbolized death, grief, beauty and elegance. These color symbols in the Renaissance Italian costumes were very similar to that of modern color symbols.