• 한국염색가공학회지
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• 제9권6호
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• pp.1-9
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• 1997

Four aminoazobenzene disperse dyes derived from different N-ethyl-N-substitutedalkylanilines and 2-chloro-4-nitroaniline, were synthesized and their chemical structure were analyzed by 500 MHz NMR spectroscopy. The wavelength of maximum absorption of the synthesized dyes, which was dependent on the electron withdrawing ability of the substituent, was in the range of 499.5~526.0nm. As terminal substituent became polar, the dyeing rate of disperse dye increased, and the exhaustion rate of dyes having cyano or hydroxy group became lower, that of the dye having acetoxy group higher. The wash fastness of polyester fabric dyed with disperse dyes possessing the polar group improved probably due to the increased dye-fiber interaction.

• 한국염색가공학회지
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• 제13권4호
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• pp.249-255
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• 2001

To interpret the dyeing behavior of PTT fiber with C. I. Disperse Violet 1, the thermodynamic Parameters of dyeing, such as standard affinity, heat of dyeing(enthalpy change), entropy change, diffusion coefficient, and activation energy of diffusion, were obtained from isotherms and dyeing rates at various temperatures and compared with those of PET fiber. The heat of dyeing(enthalpy change) and the entropy change of PTT fiber showed smaller negative values than those of PET fiber. This means that the dye molecules in the PTT fiber are combined more loosely than in the PET fiber and that is due to the flexibility of polymer chains of PTT fiber. The diffusion coefficients of C. I. Disperse Violet 1 into the PTT fiber were larger than those for PET fiber, and the activation energy of diffusion on PTT fiber was smaller than that on PET fiber.

• 한국염색가공학회지
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• 제8권1호
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• pp.34-42
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• 1996

This Study was made to investigate alkaline dyeing systems for a new dyeing applicable polyester fibers. Disperse dyes for dyeing of polyester fibers were C.I. Red 60, Blue 56 and Yellow 54 as three primary colors of E type which used widely on the scene. Dyeing properties of dispers dyes on the polyester fibers are discussed according to variation of pH values for application of alkaline dyeing method compared with to ordinary acidic dyebath. Alkaline pH of the dyebath was controlled to pH 9 and 10.5 with buffer solutions using each hydrochloride and disodiumtetraborate, disodiumtetraborate and sodium hydroxide to promote the reproducibility of dyeing. Dyeing properties of dispers dyes on the polyester fibers by alkaline dyeing method compared with to ordinary acidic dyebath were discussed by estimation of color, wash-fastness, bleeding and migration of dyed polyester fabric.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2007년도 학술발표회 논문집
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• pp.175-176
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• 2007

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2007년도 학술발표회 논문집
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• pp.183-184
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• 2007

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 1992년도 제2차 학술발표초록집
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• pp.48-48
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• 1992

• 한국의류학회지
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• 제37권7호
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• pp.952-961
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• 2013

This study optimizes a suitable dyeing method for polylactic acid (PLA) fabrics using disperse dyes. For this, disperse red 60 (DR 60), disperse blue 56 (DB 56), and disperse yellow 54 (DY 54) were used and dyed on PLA fabrics dependent of dyeing temperature and time. The fastness of PLA fabrics dyed with three disperse dyes were evaluated; in addition, dye exhaustion, color strength (K/S value), and colorimetric properties of PLA fabrics were compared with PET fabrics. The experiments indicated optimum dyeability of PLA fabrics with disperse dyes. The dyeing temperature was $90^{\circ}C$ for every dye and the dyeing time were 20 min, 60 min, and 40 min for DR 60, DB 56, DY 54, respectively. PLA fabrics had good color fastness to washing, dry cleaning fastness, hot pressing fastness, rub fastness, and perspiration fastness by DR 60, DB 56, and DY 54. The dye exhaustion of PLA fabrics were lower than PET fabrics; however, K/S values were higher than PET fabrics.

• 한국염색가공학회지
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• 제22권1호
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• pp.43-50
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• 2010

The thermal treatment for carbon nanotube was applied to remove the water, metal catalyst and other impurities in carbon nanotube. The surface of carbon nanotube was changed into open structure with acid treatment by mixed solution of $HNO_3$ and $H_2SO_4$. The dispersion property of the functionalized and modified carbon nanotube was assessed with naked eyes by dispersing it in DMF. Carbon nanotube mixd polyurethane film was made to estimate the dispersion property by reflectance of the film with UV-Vis spectrometer. Also the internal structure of carbon nanotube was observed with SEM and TEM and thermal pyrolysis property of the carbon nanotube was measured by TGA and DSC. The surface modification of carbon nanotube by thermal and acid treatments improved the dispersion property of carbon nanotube/polyurethane mixed materials.

• 한국염색가공학회지
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• 제26권4호
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• pp.339-346
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• 2014

To give a positive effect on dispersion behavior of high performance fibers $Vectran^{(R)}$ in water with reference to wet-laid nonwoven technology, 9 kinds of sulfonate type anionic surfactants were chosen to study. After dispersion experiment, the number and the area occupied by fibers in each sample were counted and figured to calculate the index of dispersion in conjunction with quadrat analysis. Similar tendency was observed in the results of two experiments. The sample without addition of any surfactant resulted in the most aggregated dispersion behavior. As the length of alkyl group attached to sulfonate increases, the sample shows more dispersed behavior. The sample with the surfactant having the aryl group and the longer alkyl group shows the most dispersed behavior and it can be seen with the naked eye as well.

• 한국염색가공학회지
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• 제5권4호
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• pp.60-66
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• 1993

IPDI, PTAd 및 DMPA(음이온 중심)을 사용하여 폴리우레탄 아이오노머를 합성하고 여기에 물을 첨가하여 수분산 폴리우레탄을 제조하였다. 폴리올 분자량(Mn)이 분산상태 및 에멀젼 주사 필름의 열적, 기계적, 점탄성적 성질 및 팽윤에 미치는 영향을 측정하였다. 폴리올 분자량이 증가할수록 에멀젼 입경과 soft segment $T_{g}$는 감소하였으며, 용매팽윤, 에멀젼 점도, hard segment $T_{g}$는 증가하였다. 필름의 인장강도는 Mn = 1000에서 최소치를 나타냈으며, 파단신율은 폴리올 분자량 증가와 더불어 증가하였는데 이러한 결과는 soft-hard segment 상분리와 고분자량 PTAd의 결정화로 적절히 설명할 수 있었다.