• 한국염색가공학회지
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• 제20권4호
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• pp.53-59
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• 2008

For the modification of wool surface, wool fabrics treated with oxygen low-temperature plasma(LTP) and dichloroisocyanuric acid(DCCA) were dyed with milling type acid dye. The difference of dyeing properties on modified and control wool fabric were investigated. DCCA treated wool showed that saturation dye uptake and dyeing desorption ratio were higher than LTP treated wool. Dyeing transition temperatures of DCCA and LTP treated wool fabrics were 20$^{\circ}C$ degree lower than control wool fabric. In light color fastness test, DCCA treated wool fabric was 1 grade lower than LTP or control wool fabric.

• 한국염색가공학회지
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• 제14권2호
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• pp.85-85
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• 2002

The interaction between berberine and tannin in aqueous solution was investigated spectrophotometerically. The dyeing mechanism of silk fabrics (control and tannin treated silk fabrics) with berberine was based on thermodynamic parameters obtained from equilibrium adsorption experiments. In adsorption spectra of aqueous solution of berberine and tannin mixture two isosbestic points (328nm, 357nm) were found and the mole fraction of reaction of components was 1:1. Initial dyeing rates were increased and the diffusion of dye was more effective by tannin treatment. Without regard to tannin treatment the adsorption isotherm of berberine was the langmuir type except high temperature, 80℃. By tannin treatment the saturation dye uptake was increased, the increase of dye uptake appeared to be a result of entropy change rather than enthalpy change. All these results can be interpreted by the hydrophobic interaction between berberine and silk treated with tannin and it is reasonable to conclude that not only the ionic force, but also the hydrophobic interaction contributes to the binding of berberine and tannin treated silk treated with tannin.

• 한국염색가공학회지
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• 제14권2호
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• pp.9-17
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• 2002

The interaction between berberine and tannin in aqueous solution was investigated spectrophotometerically. The dyeing mechanism of silk fabrics (control and tannin treated silk fabrics) with berberine was based on thermodynamic parameters obtained from equilibrium adsorption experiments. In adsorption spectra of aqueous solution of berberine and tannin mixture two isosbestic points (328nm, 357nm) were found and the mole fraction of reaction of components was 1:1. Initial dyeing rates were increased and the diffusion of dye was more effective by tannin treatment. Without regard to tannin treatment the adsorption isotherm of berberine was the langmuir type except high temperature, $80^\circ{C}$. By tannin treatment the saturation dye uptake was increased, the increase of dye uptake appeared to be a result of entropy change rather than enthalpy change. All these results can be interpreted by the hydrophobic interaction between berberine and silk treated with tannin and it is reasonable to conclude that not only the ionic force, but also the hydrophobic interaction contributes to the binding of berberine and tannin treated silk treated with tannin.

• 한국염색가공학회지
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• 제11권3호
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• pp.1-8
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• 1999

Polyester ultrarmcrofiber(UMF, fiber fineness : 0.05d) and the other three kinds of polyester fibers(0.52, 1.04 and 2.08d) were dyed with two disperse dyes, C.1. Disperse Red 60 and Blue 56. Dyeing rates and absorption isotherms of these dyes have been measured at 100, 115 and $130^\circ{C}$ in water system. The dye bath was maintained at pH 5.0 with acetic acid(0.1mo1/1) /sodium acetate(0.1mo1/1) buffers and a liquor ratio of 1000：1. The absorption isotherms from two disperse dyes are nearly linear up to the saturation values, which increase with the temperature of dyeing. Dye uptake decreased with the fiber fineness in lower temperature $100^\circ{C})$, whereas increased in higher temperature$(130^\circ{C})$. A comparatively greater quantity of dye is necessary to dye ultrarmcrofiber fabrics than conventional fabrics. Disperse Blue 56 having a good build-up property is agreed to Fothergill's equation, which is inversely varied with the fiber fineness by the quantity of dye necessary to obtain a given shade.

• 한국염색가공학회지
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• 제14권5호
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• pp.268-276
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• 2002

Poly(trimethylene terephthalate)(PTT) and Poly(ethylene terephthalate)(PET) fibers were annealed at various temperatures ranging from $100^\circ{C}$ to $230^\circ{C}$ for 10 min under tension and tension free. Dyeing rates and absorption isotherms of both fibers were obtained with C.I. Disperse Red 60 at 100, 120 and $130^\circ{C}$ in water system. Also X-ray diffraction pattern, moisture regain and water absorption were investigated. The dyeing rate of PTT fiber is faster than PET fiber, and dyeing of PTT fiber begin at lower temperature compared to PET fiber. The absorption isotherms from both fibers with disperse dye we nearly linear up to the saturation dye uptake, which increase with dyeing temperature. Equilibrium dye uptake of PTT fiber annealed under tension above $180^\circ{C}$ was remarkably decreased because of a changes in the fine structure of fiber. The intensities of X-ray diffraction peaks of both annealed fibers were increased with increasing in annealed temperature. The reflections observed at $2\theta$=$15.8^\circ$, $24^\circ$ and $25.2^\circ$ were assigned reflection of crystal at the planes of (010), $(1\bar02,\;\bar112),\;and\;(\bar13,\; \bar113)$ respectively, and the peak became sharp with heat setting temperature.

• 한국염색가공학회지
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• 제5권3호
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• pp.206-215
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• 1993

In the prior study, wool gabardines were treated with alkaline proteases which were some kinds of enzyme to decompose protein, and their tensile strengths were determined, and the surface of the fibers were also observed using a scanning electron microscope. Enzylon ASN 30 and Alkalase 2.5L DX did not show much effect on the weight loss of wool, however, the weight loss of wool increased considerably with treating Esperase 8.0L. Pretreatment of wool with dichloloisocyanuric acid before protease-treatment increased the weight loss of wool to a great extent. In this study, the enzyme treated wools dyeing behaviors with acid dye, Milling Cyanine 5R, were mainly investigated. The protease-treatment remarkably increased not only the rate of dyeing but also the saturation dye uptake. From these results, it seemed likely that the structural relaxation of adhesive filler of interscale or intercellular cement facilitated the dye penetration into the fibers, at the same time, the change in the inner structure of the wool fibers by the protease made the fixation of the dyes more efficient.

• 한국염색가공학회지
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• 제14권6호
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• pp.319-327
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• 2002

Nylon 6 ultramicrofiber(UMF, monodenier 0.074d) and regular staple fiber(monodenier 2.05d) were dyed with acid and disperse dyes to investigate the effect of the difference of the fiber fineness. Also X-ray diffraction pattern, birefringence, DSC thermogram, moisture regain and water absorption of these fibers are measured. The dyeing rate of nylon UMF with acid dyes is increased compared with that of regular fiber, but not increased for disperse dyes. Also the saturation dye uptake of UMF with acid dyes is higher than that of regular fiber, while it is unchanged for disperse dyes. The moisture regain of UMF is similar to the regular fiber, whereas the water absorption of UMF is two times th그n that of the regular fiber. The crystallinity percentage of UMF is higher than that of regular fiber.

• 패션비즈니스
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• 제11권2호
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• pp.92-101
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• 2007

This research was carried out following the preceding research on natural cellulose fabrics dyed with extract of fresh african marigold petals. Dyeability on fabrics was tested by dyeing with wool and silk which are natural protein fibers. Dyeing tests were carried out under different pH of the dye solution and mordants, examining the changes in the surface color, K/S value, and maximum absorption wavelength. The probability of improving dyeability was investigated by pre-mordanting with pre-treated chitosan. Wool fabrics showed color tone of medium or less saturation and brightness, in dark yellow color series. An orange color of high saturation was only obtained by tin mordanting. Wool showed higher K/S value than cellulose fibers. In summary, marigold dye has more affinity for protein fibers. It showed better dye effect in wool than silk. The chitosan pre-treatment and pre-mordanting lowered the K/S value of wool, which showed that chitosan pre-treatment does not improve dye uptake. However, different from the dyeing carried out by pre-mordanting without pre-treatment with chitosan, more diversified colors could be obtained by mordants. Therefore, for the dyeing natural protein fibers with marigold extract, post-mordanting does not require chitosan pre-treatment. However, pre-mordanting with chitosan pre-treatment could implement diverse colors. Considering its dyeing behaviors which are similar in both natural cellulose and protein fibers, african marigold extracts can be evaluated as a stable and highly practical dye.

• 청정기술
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• 제17권2호
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• pp.110-116
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• 2011

본 연구에서는 초임계 이산화탄소를 사용하여 $50{\sim}90^{\circ}C$의 온도와 15~30 MPa의 압력범위에서 두 종류의 분산염료(C.I. Disperse Yellow 54, C.I. Disperse Red 60)를 사용하여 폴리에스테르 섬유의 염색에 대한 연구를 수행하였다. 동일압력(30 MPa)과 밀도(700 kg/$m^3$) 조건에서 Red 60을 이용한 초임계유체 염색을 수행한 결과, 온도 증가에 따라 폴리에스테르 섬유 내에 염착되는 염료의 양이 증가하였으며, Red 60의 경우 $90^{\circ}C$, 30 MPa의 염색 조건에서 240분내에 염착평형상태에 도달하였으나, Yellow 54의 경우는 360분 이상의 염색시간이 요구되었다. 다양한 혼합비율(Red 60/Yellow 54, 0.01~9.0 wt./wt.)로 두 종류의 염료를 배합하여 초임계유체 염색 실험을 수행한 결과 Red 60/Yellow 54의 혼합비에 대한 Red 60/Yellow 54 염착량비는 로그스케일 그래프에서 비례하는 것을 확인하였다. 색상은 두 염료의 중간색인 오렌지색을 얻을 수 있었으며, 색의 짙은 정도는 염료의 혼합비율에 의존하는 것을 확인하였다.