• 한국염색가공학회지
• /
• 제12권1호
• /
• pp.44-51
• /
• 2000

The conventional one bath exhaust dyeing system of nylon]/cotton blends with acid dye/direct dye involves a lot of neutral salt which affect dyeability of acid dyes. Because of conventional one bath exhaust dyeing system of nylonl/cotton blends with acid dye/direct dye needs acid dyes adjusted at a neutral liquor, suitable acid dye is limited. To improve dyeing property of nylon/cotton blends, cotton component was pretreated with cationizing agent containing chlorohydrine group in aqueous solution of sodium hydroxide. This study was carried out to investigate dyeing possibilities of nylon/cationized cotton blends with acid dye/direct dye in a non-neutral salt dyebath by one bath two step method. The concentration of direct dye was 1.0%, 0.7%, 0.3%o.w.f. respectively at a non, 1%, 3%owf of reserving agent for being almost equal color strength between nylon and 3% cationized cotton when nylon/3% cationized cotton blends was dyed with acid dye/direct dye at concentration of acid dye(1%o.w.f.) by one bath two step method.

• 한국의류학회지
• /
• 제24권3호
• /
• pp.385-392
• /
• 2000

The adsorption ability of dyes on chitin, a natural polymer was investigated for decolorization of dye wastewater. Chitin was manufactured in lab by decalcification in dilute aqueous HCI solution and deproteination in dilute aqueous NaOH solution with shrimp shells. Absorbance of residue solution of dyebaths after dye adsorptions of chitin were measured in varieties of dye concentration and dipping periods. Four kinds of dyestuffs were used, C.I.Acid Blue 29. C.I.Direct Blue 6, C.I.Reactive Orange 12 and C.I.Basic Red 18. When chtin 1g was dipped in 0.05% of dyebath with stirring, maximum adsorption ratio of each kind of dyes was exhibited as 91.6% for C.I.Acid Blue 29, 95% for C.I.Direct Blue 6, 58.2% for C.I.Reactive Orange 13 and 75.8% for C.I.Basic Red 19. It shows that chitin has better adsorption abilities of ionic dyes of acid, direct and basic dye than non-ionic reactive dye. And chitin has better adsorption abilities of anionic acid direct dyes than cationic basic dye because of the presence of nitrogen atoms. All kinds of dyestuffs used showed speedy absorption effects by chitin, so chitin can absorb much amount of dyes in 5 mimutes reach to equilibrium of adsorption in 2 hours after dipping. Basic dye was absorbed the most speedily in 5 minutes, although maximum adsorption ratio is not high. That reason can be thought that chitin surface is essentially negatively charged due to polar funtional groups.

• 한국의류산업학회지
• /
• 제3권2호
• /
• pp.168-173
• /
• 2001

In order to overcome the disadvantage of the conventional two bath dyeing method of wool/cotton blends, it had prompted significant effort to the development of the one bath dyeing method which can accomplish savings in energy, water usage and time. To improve the dyeability of cotton toward direct dyes in a non-electrolytic and acidic dyebath, cotton component was pretreated with cationizing agent containing chlorohydrine group in aqueous solution of sodium hydroxide. This study was carried out to investigate almost equal color strength between wool component and cationized cotton component when wool/cationized cotton blends was dyed with acid dye/direct dye by the one bath two step method in a non-electrolytic and acidic dyebath.

• 분석과학
• /
• 제19권1호
• /
• pp.50-57
• /
• 2006

계면활성제를 완충용액에 섞어서 사용하는 미셀 모세관 전기영동법(micellar electrokinetic capillary chromatography, MECC)을 이용하여, 아조염료의 합성성분이면서 동시에 아조염료가 분해될 때 생성되는 H-acid modifier 혹은 2-naphthylamine-1,5-disulfonic acid 등의 디아조 성분에 대한 분석을 수행하고, 이 분리 결과를 Ion-Paring 메카니즘을 이용한 고성능 액체 크로마토그래피법과 비교하였다. 이 방법을 이용하여 Direct Blue 2, Direct Blue 6, Direct Blue 15 등의 직접염료 그리고 Reactive Orange 4와 같은 반응성 염료의 혼합용액을 완전히 분리할 수 있었다. 특히 각 염료의 환원용액을 H-acid, J-acid, ${\gamma}$-acid, orthanilic acid, sulfanilic acid 2-naphthylamine-1,5-disulfonic acid 등의 표준물질과 비교 분석한 결과, 사용한 각 염료의 디아조 성분인 H-acid modifier 혹은 2-naphthylamine-1,5-disulfonic acid에 대한 정보를 얻을 수 있었다. 본 연구의 결과를 토대로 Ion-Pair 크로마토그래피법과 모세관 전기영동법은 미지의 염료에 대한 성분확인 및 디아조 혹은 커플링 성분분석에 응용할 수 있음을 알 수 있었다.

• 한국가구학회지
• /
• 제12권1호
• /
• pp.1-9
• /
• 2001

This study was carried out to elucidate the relationship between wood anatomy and the water flow path in P. koraiensis and L. leptolepis. through the experiment of penetration of the dye solution. The experiment was performed by permeating 1% acid, alkali and direct solution into the xylem just after being cut. The results obtained were summarized as follows : 1. In P. koraiensis and L. leptolepis, the dye solution penetrated into sapwood and annual rings adjacent to cambial zone were only dyed according to ascent of tree height. 2. The penetrability of latewood was better than that of earlywood. 3. In P. koraiensis and L. leptolepis, the main water flow path in longitudinal direction was the trachied and that in transverse direction was ray trachied and ray parenchyma. Also, the dye solution was found in resin canal. 4. P. koraiensis was more permeable than L. leptolepis. 5. Among the acid, alkali and direct dye solution, the acid dye solution was the most permeable.

• 분석과학
• /
• 제19권1호
• /
• pp.31-38
• /
• 2006

Ion-Paring을 이용한 고성능 액체 크로마토그래피법과 계면활성제를 완충용액에 섞어서 사용하는 미셀 모세관 전기영동법(micellar electrokinetic capillary chromatography, MECC)을 이용하여 아조염료의 합성성분이면서 동시에 독성을 나타내는 분해물인 H-acid, J-acid, ${\gamma}$-acid, orthanilic acid, sulfanilic acid 그리고 2-naphthylamine-1,5-disulfonic acid 등의 디아조 성분에 대하여 분석을 수행하였다. 같은 방법으로 Acid Orange 7, Acid Orange 5, Acid Blue 92 등의 산성염료와 Direct Red 80 등의 직접염료와 같은 반응성 염료 및 Calcion에 대한 분리를 시도한 결과 모든 염료에 대한 완전한 분리를 얻었으며, 특히 각 염료의 환원용액을 H-acid, J-acid, ${\gamma}$-acid, orthanilic acid, sulfanilic acid 혹은 2-naphthylamine-1,5-disulfonic acid 등의 표준물질과 비교 분석한 결과 사용한 각 염료의 디아조 혹은 커플링 성분을 완벽하게 분석할 수 있음을 알 수 있었고, 따라서 Ion-Pair 크로마토그래피법과 모세관 전기영동법은 미지의 염료에 대한 성분확인 및 디아조 혹은 커플링 성분분석에 응용할 수 있음을 보였다.

• 산업기술연구
• /
• 제20권A호
• /
• pp.51-56
• /
• 2000

The Photocatalytic decolorization and degradation of commercial dyes were studied using a batch reactor. Degussa P25 titanium dioxide and $H_2O_2$ were used as the photocatalyst and proved to be effective for dyes degradation when they were irradiated with UV light. The light source was a 20W low pressure mercury lamp. Three different kinds of dyes, such as direct dye(congo red), acid dye (acid black) and disperse dye(disperse blue) were tested. Extending the UV only treatment up to 120min, direct dye was decolorized to 60% and degraded to 30% as COD. On the other side, acid and disperse dyes were eliminated less than 10% as color and COD. But, color and COD were eliminated about 90% for all of the three dyes by $UV/H_2O_2$ system. And then the most effective decolorization was done for direct dye with 96% removal efficiency by $UV/TiO_2$ system at 120min with 500mg/L of $TiO_2$.

• 대한가정학회지
• /
• 제30권2호
• /
• pp.45-52
• /
• 1992

The dyeing characteristics of Dylon hand dyes on the cotton & silk fabric were studied, and the fastnesses of Dylon hand dyes were compared with those of direct & acid dyes. The results are as follows. 1. Dye adsorption of Dylon hand dyes increased as the concentration of dye increased. 2. Dye adsorption was increased as treatment time increased, and reached to eqilibrium after forty minutes treatment. 3. The temperature at mixiumum adsorption was 6$0^{\circ}C$, in the range of lower temperature than 6$0^{\circ}C$ color was changed, in the range of higher temperature adsorption of dye was decreased. 4. Dye adsorption was increased in direct proprotion to NaCl concentration and reached to equilibrium. But NaCl concentration of even and maximum adsorption was 5%. 5. Wash fastness of Dylon hand dyes was better than direct & acid dyes, but light fastness was worse.

• 한국염색가공학회지
• /
• 제13권1호
• /
• pp.38-44
• /
• 2001

The adsorption ability of dyes on chitin, a natural polymer was investigated for decolorization of dye wastewater. Chitin was manufactured in lab by decalcification in dilute aqueous hydrochloric acid solution and deproteination in dilute aqueous sodium hydroxide solution with shrimp shells. Absorbance of residue solution of dyebaths after dye adsorptions of chtin were measured in varieties of dye concentration and dipping periods. Three kinds of Direct dyes -C.I. Direct Red 81 (red 81), C.I. Direct Brown l(brown 1) and C.I. Direct Green 26(green 26) - were used. Red 81 and brown 1 have smaller molecular weight than green 26. The results from experimentals were of]tamed as follows: 1) Adsorption of green 26 was improved in dyebath by addition of salt, but red 81 and brown 1 were not found any improvements. 2) Smaller size of chitin particles could be absorbed much more speedy. In this experiments, the smallest range of chitin particle size was $250\mu{m}$ and less. 3) The most efficient amount of chitin for 20m1 of dyebath was 0.2g, 4) Both of red 81 and brown 1 showed good and speedy adsorption abilities as dyestuffs of over 90 percent in just one minute in dyebath of 0.01% dye concentration. But green 26 was absorbed slowly because of its large molecular weight. It took 40minutes to absorb dyestuffs of over 90 percent in dyebath of 0.01% dye concentration.

• 한국의류학회지
• /
• 제20권6호
• /
• pp.992-1001
• /
• 1996

The binding of polyethylene glycol (PEG, average molecular weight 600) to cotton fabrics was achieved by using pad-dry-cure process in the presence of citric acid, MgCl3·6H3O, DMDHEU, and TEAHCL. Treated fabrics were dyed with direct, acid, and basic dye. Wrinkle recovery angles, durable press rate, wettability, dyeability and color fastness to washing of all treated cottons were evaluated. The results of this study were as follows: 1. The wrinkle resistance of the PEG treated cottons was increased by increasing PEG and DMDHEU concentration. 2. The wettability of the PEG treated cottons was decreased by increasing PEG and DMDHEU concentration, increased by increasing TEAHCL concentration. 3. PEG/DMDHEU/TEAHCL treated cottons had greater affinity on direct, acid, and basic dye than untreated cottons, and dyeability of the modified cottons was improved compare to untreated fabrics. 4. Color fastness to washing of the PEG/DMDHEU/TEAHCL treated cottons was good except for the wash fastness of the direct dye.