• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2009년도 학술발표대회
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• pp.209-210
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• 2009

• 한국염색가공학회지
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• 제8권5호
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• pp.68-75
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• 1996

Even if fibers are practically identical with respect to chemical composition and denier, the dyeabilities are freqently a little different in an industrial processing. It is difficult to interpret the numerical values of dye diffusion coefficients from a dye solution into fibers. The main reasons are the multicomponent nature of the diffusion process and the inhomogeneities of the substrate, so-called, various kinds of ordered and disordered regions of polymers, void and pores. The equilibrium dye adsorptions and dyeing rates of a disperse dye into the several PET fibers having the same denier were determined at various temperatures. The dyeability of examined samples was divided into two groups, that is, lower dye adsorption fiber and higher ones at the lower temperatures. This result was discussed with the degree of crystallinity, DSC diagram, X-ray diffractometry and Porosimetry of the PET fiber, and an appropriate model for fine structure of PET fiber was proposed.

• 한국염색가공학회지
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• 제29권1호
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• pp.11-17
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• 2017

In this study, ozone oxidation experiment was carried out for the removal of fluorescent whitening agent which is widely used in textile dyeing and paper industry. The stilbene fluorescent whitening agent has been industrialized since the earliest, and the amount of current production is the highest. Due to the characteristics of the fluorescent whitening agent that can not be removed by conventional wastewater treatment methods, the fluorescent whitening agent in wastewater treatment has difficulty in using as recycled water in the process. Pre-treatment ozone oxidation experiment was conducted prior to the introduction of Membrane Bio Reactor(MBR) treatment process by converting biodegradable materials into biodegradable materials. The removal efficiencies of fluorescent whitening agents, a diaminostilbenedisulfonic acid derivative by ozone oxidation were evaluated by $UV_{254}$ Scan, $COD_{Mn}$, T-N and color using a synthetic wastewater sample ($COD_{Mn}=433.0mg/{\ell}$) and paper and paper mill wastewater ($COD_{Mn}=157.2mg/{\ell}$).

• 한국염색가공학회지
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• 제32권4호
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• pp.208-216
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• 2020

In this study, C.I. Disperse Red 60 (DR60), C.I. Disperse Yellow 54 (DY54) dyes were used to investigate the washing fastness characteristics of PET fibers according to supercritical CO2 and aqueous dyeing process. The changes in K/S values and L⁎ values before and after washing of dyed PET fibers were observed according to the KS K ISO 105 washing fastness measurement method. In addition, it was confirmed by changing the ΔE⁎ and ΔL⁎ values of control PET fibers. Overall, it was confirmed that both the supercritical CO2 and aqueous dyeing process had excellent washing fastness ratings of 4-5 for DR60 and DY54 dyes. Comparatively, the K/S and L⁎ values for before and after washing of PET fibers with supercritical CO2 dyeing process was higher than that of the aqueous dyeing process and the ΔE⁎ and ΔL⁎ values of the control PET fibers were low. From the results, we observed that the supercritical CO2 dyeing process of PET fibers has better washing fastness characteristics than the aqueous dyeing process.

• 한국염색가공학회지
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• 제10권4호
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• pp.45-52
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• 1998

Reuse of wastewater become an important consideration to solve the environmental pollution problems in recent industriallzation and urbanization. Especially, he characteristic of dyeing process is subject to use much water and thus has serious problems for removal of color and organic pollutants in their wastewater. This report is divided into two main parts ： The purpose of the first part was to determine if alkaline wastewater discharged from textile dyeing operation factory could be flocculated directly by Fenton oxidation method. This study was conducted to investigate Fenton reagent dose and reaction condition of Fenton method as pretreatment for dyeing wastewater in K dyeing industry were investigated. In the second part of this research, to treat dyeing wastewater it was found that the most effective way is to use ultrafiltation and reverse osmosis at the conditions of the pH 7.0~8.0 and operating pressure of $2.5~35kg_f/cm^2$. This paper is mainly dealt with the application on reuse system of dyeing wastewater treatment using ultrafiltration and reverse osmosis membranes. The results showed that dyeing wastewater could be reused by chemical, filter and membrane sequential treatment process.

• 한국염색가공학회지
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• 제15권4호
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• pp.32-38
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• 2003

To get the variety of color by natural dyeing, cotton and silk fabrics were dyed with natural indigo and safflower in turn. The two ways of dyeing processes were carried. First, silk and cotton fabrics were dyed repeatedly in safflower dyebath to five times to get the five fabrics dyed in different shades. And then indigo dyeing process was carried on the top of the dyed fabrics with safflower. In second way, the fabrics were dyed in five stages of shade by repetition of dyeing process in indigo dyebath. And then safflower dyeing was carried on the top of the dyed fabrics with indigo. When indigo dyeing process was added on the top of the fabrics dyed in five shades with safflower, the color differences decreased between five shades of fabrics, their color values got similar in hue, shade and chroma. When safflower dyeing process was added on the top of the fabrics dyed in five shades with indigo, the fabrics showed different hue of colors between red and blue of Munsell color circle such as RP, P and PB. Like almost of fabrics dyed with plants materials, the lightfastness and laundering fastness of dyed samples were poet and drycleaning fastness were good.

• 한국염색가공학회지
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• 제30권1호
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• pp.51-61
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• 2018

In this study, effluent water was produced through Submerged Membrane Bio-Reactor(SMBR) process, which is a simple system and decomposes organic matter contained in wastewater with biological treatment process and performs solid-liquid separation, Especially, ozone oxidation treatment process is applied to effluent water containing fluorescent whitening agent, which is a trace pollutant which is not removed by biological treatment, and influences the quality of reused water. The concentration of $COD_{Cr}$ in the SMBR was $449.3mg/{\ell}-COD_{Cr}$, and the concentration of permeate water was $100.3mg/{\ell}-COD_{Cr}$. The removal efficiency was about 70.1%. The amount of ozone required for the removal of the fluorescent whitening agent in the permeated water in SMBR was $6.67g-O_3/min$, and the amount of ozone required to remove $COD_{Mn}$ relative to the permeate water was calculated to remove $0.997mg-COD_{Mn}$ for 1mg of $O_3$.

• 한국염색가공학회지
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• 제28권2호
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• pp.77-91
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• 2016

Recently, the spun blend yarns with staple fibers and filaments are being developed in the spinning process using an air blowing and electrostatic spinning technology(cyclone) in order to enhance the soft feeling and the fine count spun blend yarn manufacturing competitiveness. In this study, the appropriate separation condition of polyester multifilament was examined according to the treatment condition of conductive agents and voltage on polyester multifilament in the newly developed cyclone spinning process. And it was investigated the physical properties and dyeability of the cyclone wool/polyester spun blend yarns and its wool composite fabrics in comparison with existing sirofil wool/polyester spun blend yarn and its fabrics. As the result, it is determined that the newly developed cyclone wool/polyester spun blend yarn applied fabrics has a superior quality level in terms of practicality.

• 한국염색가공학회지
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• 제7권4호
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• pp.16-24
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• 1995

Traditionally dyeing fabric with dyestuff extracted from Indigo was a popular method of obtaining blue color in the world before synthetic dyestuff was developed in the 1890's. As the Korean traditional process of dyeing extracted from Indigo, there are two kinds of dyeing process; The deposite dyeing of muddy Indigo and the leaf dyeing of Indigo plant. In order to study the properties of leaf dyeing of Indigo, the dyeing properties, color difference on cotton and silk fabrics under several dyeing conditions were investigated. In the dyeing of cotton and silk fabrics with leaf dyeing of Indigo, the dyeing affinity of silk was higher than that of cotton, the cotton and silk fabrics were dyed dark yellowish Green and dark Blue, respectively. the dye uptake increased with the increase of dyeing temperature and of the unmber of dyeing times. When cotton and silk fabrics dyed with leaf dyeing of Indigo at 6$0^{\circ}C$ for six number of times, the K/S value of dyed cotton and silk were calculated 1.286, 2.613 respectively.

• 한국염색가공학회지
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• 제15권3호
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• pp.168-175
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• 2003

Ultramicrofiber(UMF) PET knitted fabric and regular PET plain woven fabric as reference sample were impregnated with waterborne polyurethane(PU) in a two-step process with dyeing/PU treatment and PU treatment/dyeing to investigate the effect of the treatment sequence. The waterborne PU impregnated fabrics were dyed with two kinds of vat and disperse dyes to investigate the dyeing properties and the dyeing fastnesses. In vat dyeing the rank of color strength(K/S) was in order of dyeing/PU impregnation > dyeing only > PU impregnation/dyeing, whereas in case of disperse dyeing, the order was dyeing/PU impregnation > PU impregnation/dyeing >dyeing only. Wash fastness of vat dyeing showed a higher 2-3 grade than disperse dyeing, while rubbing and light fastnesses were not good for disperse dyes.