• Title, Summary, Keyword: Dye

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A Study of the Dyeability and Physical Properties of Mordanted and Finished Fabrics Dyed with Natural Dye of Safflower (홍화를 이용한 매염 및 가공처리 직물의 염색성에 관한 연구)

  • 안경조;김정희
    • Textile Coloration and Finishing
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    • v.13 no.1
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    • pp.23-31
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    • 2001
  • To improve the dyeability and colorfastness of cotton and silk fabric dyed with natural dye of safflower, cotton and silk fabrics were pre-treated with different mordants such as halliic-acid, alum, brine and tannic-acid. Also, to investigate the effect of finishing treatment of fabrics on dyeability, cotton was treated with chitosan and mercerized before dyeing. L, a, b, ΔE and colorfastness(light, Laundry, sweat) of each samples were measured and compared. Mordant treatment didn't improved significantly dyeability and colorfastness on cotton and silk. But, on cotton mercerization and chitosan treatment improved dyeability and colorfastness. To compare the efficiency of extracted dye and Powered dye, extracted red dye of safflower prepared as powder. Cotton and silk were dyed with dyeing solution which made with powdered dye according to different concentration. Efficiency of powdered dye was found out lower than extracted dye solution.

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Dyeing Properties and Improvement of Washfastness of Ultrafine Polyester (해도형 극세사 폴리에스테르의 염색성 및 세탁견뢰도 향상에 관한 연구)

  • 김성동;이권선;이병선;안창희;김규식
    • Textile Coloration and Finishing
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    • v.15 no.1
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    • pp.48-55
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    • 2003
  • As the polyester fiber becomes thinner, thermomigration that is the most important factor deteriorating the washfastness, is more dominant. For improving the washfastness of ultrafine polyester dyed with disperse dye, it is necessary either to decrease the amount of thermomigrated dyes on the fiber surface, or to use a disperse dye containing diester group in the coupling component. This paper is concerned to investigate the relation between the chemical structure of three disperse dyes and their dyeing properties and washfastness. The disperse dye whose molecular size is big, can dye ultrafine polyester with good build-up, and its washfastness is reasonably good. Other disperse dye which has diester group, shows the same dyeing properties as the standard disperse dye, and its washfastness is better than that of the standard disperse dye.

A Study on the Color of Natural Dye -Cape Jasmine Dye- (천연염료의 색채에 관한 연구 -치자색소를 중심으로-)

  • 김공주;신영진고석범이종문
    • Textile Science and Engineering
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    • v.13 no.3
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    • pp.1-4
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    • 1976
  • Fading gives the change of three characteristic value, i.e., hue, chroma, and value. In order to study on the color of natural dye, authors have dyed ramie, silk, and nylon fabric in dye solution extracted from fruits of Cape Jasmine, and exposed them to carbon arc light. The results of experiment have been analysed by the method of C.I.E. chromaticity diagram, H.V/C color solid, and the determination of three characteristic value of color difference etc.. The results from these analyses are as follows; 1. As the dyeing temperature becomes higher, the hue of Cape Jasmine dye on the silk and nylon fabric gets the shift Y to YR, its value increases and its chroma decreases. 2. The light fading of this dye makes the shift of hue YR to Y; on the nylon and silk singlehue, on the ramie multihue. And also the value and chroma of this dye on the silk and nylon decrease with the light fading. 3. The light fading of Cape Jasmine dye is chiefly caused by the shift of chroma.

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Interfacial Electrokinetic Potential and Dyeing Properties of Wool and Acrylic Fiber in Acid/Cationic Mixed Dye Solution (III) -Interfacial Electrokinetic Potential of Wool and Acrylic Fiber in Mixed Dye Solution- (산성/캐티온 혼합염료 용액에서의 양모 및 아크릴 섬유의 계면동전위와 염색성(III) -혼합염료 염액에서 양모 및 아크릴 섬유의 계면동전위-)

  • 김삼수;김성동;김노수;고석원
    • Textile Science and Engineering
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    • v.29 no.9
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    • pp.50-59
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    • 1992
  • The interfacial electrokinetic potentials were measured by streaming potential method which was generally used in the electrochemical study of interface of fiber and dye solution. The results were transformed into ζ potential by Helmholtz-Smoluchowski formular, into surface charge density by Suzawa formular and into surface dye adsorption of fibers. The ζ potential of wool or acrylic fiber in dye mixture solution showed similar trend as was found in single dye solution, but the total dye up-take of wool fiber increased at higher pH value. It is postulated that the increase in dyeing sites by the dissociation of carboxyl groups of wool fiber at higher pH is responsible for the increased dye up-take.

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Preparations and Photovoltaic Properties of Dye-Sensitized Solar Cells Using Polymer Electrolytes (고분자 전해질을 이용한 염료감응형 태양전지의 제작과 광기전 특성)

  • Kim, Mi-Ra;Shin, Won-Suk;Jin, Sung-Ho;Lee, Jin-Kook
    • 한국신재생에너지학회:학술대회논문집
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    • pp.175-178
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    • 2006
  • Solid-state dye-sensitized solar cells were fabricated using a polymer matrix in electrolyte in the purpose of the improvement of the durability in the dye-sensitized solar cell. In these dye-sensitized solar cells, the polymer electrolyte consisting of $I_2$, LiI, ionic liquid, ethylene carbonate/propylene carbonate and polymer matrix was casted onto $TiO_2$ electrode impregnated Ruthenium complex dye as a photosensitizer. Photovoltaic properties of solid-state dye-sensitized solar cells using polymer matrix (PMMA, PEG, or PAN) were investigated. Comparing photovoltaic effects of cells using hole conducting polymers (BE or 6P) instead of polymer matrix, we investigated the availability of the solid-state polymer electrolyte in dye-sensitized solar cells.

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Synthesis of Antibiotic Red Reactive Dye and Its Dyeing Property (적색 항균성 반응염료의 합성과 염색특성)

  • 김이진;김삼수;김준호
    • Textile Coloration and Finishing
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    • v.16 no.2
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    • pp.15-24
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    • 2004
  • The antibiotic reactive dye was synthesized by coupling of reactive chromagen with diazotised silver sulfadiazine for an antibiotic property. The highly reactive MCT(monochlorotriazine) and DCT (dichlorotriazine) type functional groups which have heterocyclic ring and moderately reactive VS-type dye that has good dyeability were used for reactivity. The synthesized antibiotic reactive dye is expected to impart the antibiotic function with high durability on cotton fabric only by one-step dyeing process without further finishing treatment. The synthesis of antibiotic dye was easily proceeded thorough diazotisation of silver sulfadiazine and coupling with suitable chromogen. The dyeability of synthesized dye for cotton fabrics was excellent and the dyed fabrics showed good level of lightfastness, resistance to washing and rubbing. The antibiotic tests revealed that the dyed cotton fabrics with the synthesized dye had very good antibiotic properties.

PET Dyeing in Black Shade with Disperse Dyes of Three Primary Color

  • Kim, Hae-Rim;Lee, Jung-Jin
    • Textile Coloration and Finishing
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    • v.21 no.5
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    • pp.27-34
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    • 2009
  • PET fabric was dyed in black shade with disperse dyes of three primary color. The effect of combination ratio of dye concentration and energy type of disperse dye on dyeing and color property of black dyed PET fabric was investigated. Dyeing compatibility of disperse dyes of three primary color on PET was evaluated by comparison of dyeing rates of them. From the results, color property was dependent upon the combination ratio of dye concentration. In order to obtain low lightness ($L^*$) and black color, blue dye should be added enough. S-type disperse dye and $130^{\circ}C$ dyeing was suitable rather than SE-type dyes or $120^{\circ}C$ dyeing. Disperse dyes of three primary color used showed good dyeing compatibility at high dye concentration. Washfastness was fair to moderate and lightfastness was moderate.

Organic Solvent Dyeing(III) -The Interpretation of Dyeing Behavior by Thermodynamic Parameters on Dyeing of Polyester Fiber in Alkanes as Dyeing Media- (유기용매염색(III) -Alkane류를 염색매체로 한 PET의 염색에 있어서 열역학적 파라미터에 의한 염착거동 해석-)

  • 김태경;임용진;조광호;조규민
    • Textile Coloration and Finishing
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    • v.12 no.1
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    • pp.52-60
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    • 2000
  • In the prior studies, we reported that the dye uptakes of C. I. Disperse Violet 1 on polyester fiber in hexane and cyclohexane were higher than those in the other solvents, as the number of carbon atoms of alkanes decreased, the dye uptake increased, and the logarithmic plot of the dye uptakes vs. the solubilities of the dye showed that the dye uptakes are inversely proportional to the solubilities. In this study, for Interpretation of dyeing behavior of C. I. Disperse Violet 1 on polyester in alkanes, the thremodynamic parameters of dyeing, such as standard affnity, heat of dyeing(enthalpy change), entropy change, diffusion coefficient, and activation energy of diffusion, were obtained from isotherms and dyeing rates at different temperature. As the number of carbon atoms of alkanes increased, the standard affinity decreased, but the heat of dyeing(enthalpy change) and the entropy change showed larger negative values. These results mean that as the number of carbon atoms of alkanes increases, the dye uptake decreases, but both the fraction of the dye molecules dyed at relatively highly aligned or compact region of polyester fiber and the regularity of dye aggregates in the fiber become increased. As the number of carbon atoms of alkanes increased, the diffusion coefficient decreased, but the activation energy of diffusion increased. In the alkane of larger number of carbon atoms, because the solubility of the dye is higher, the desorption rate of the dye is faster and the diffusion coefficient is smaller than those in the smaller alkanes. But the energy required to separate the dye molecules from the alkane molecules is much higher because the interaction between the alkane molecule and the dye molecule become strong with the number of carbon atoms.

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Affected Enhance of Dye-Sensitized Solar Cells Using Silver Nanoparticle (은 나노 입자를 이용한 염료감응형 태양전지의 효율 향상 효과)

  • Jung, Haeng Yun;Hong, Kyung Jin
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.31 no.1
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    • pp.34-39
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    • 2018
  • In this study, e-beam equipment was used to form silver nanoparticles on thin films of $TiO_2$ to increase the efficiency of dye-sensitized solar cells and improve the annealing process. $TiO_2$ thin films with nanoparticle photoelectrodes were fabricated in individual units for use in dye-sensitized solar cells. The characteristics of dye-sensitized solar cells were compared to those of the prepared $TiO_2$ photoelectrode with and without nanoparticles. The dye-sensitized solar cells with silver nanoparticles showed a significant increase in the electric current density compared with the pure $TiO_2$ dye-sensitized solar cell and improved the solar conversion efficiency to 27.89%. The increased density of electric current increased the extent of light absorption of the dye owing to the plasmon resonance of the nanoparticles at the local surfaces. This phenomenon led to increased light scattering, which in turn increased the current density of the dye-sensitized solar cells and improved the solar conversion efficiency.

Hair Bleaching and Degree of Damage by Thermal Treatment (열처리에 의한 모발의 퇴색 및 손상도 연구)

  • Seong, Yu Rim;Kang, Eun Ju;Lim, Sun Nye
    • Textile Coloration and Finishing
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    • v.31 no.3
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    • pp.155-164
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    • 2019
  • This study comparatively analyzed hair bleaching and degree of damage by the temperature of a heating tool after coloring hair with a permanent, semi-permanent or plant hair dye. According to analysis by spectrophotometer, 'semi-permanent hair dye' was the highest, followed by 'permanent hair dye' and 'plant hair dye' in terms of changes in $L^*$ values. In terms of changes in hair shape when analyzed using FE-SEM, 'semi-permanent hair dye($150^{\circ}C$ or lower)' was the greatest, followed by 'plant hair dye($180^{\circ}C$ or lower)' and 'permanent hair dye($200^{\circ}C$ or lower)'. Therefore, it is reasonable to flat iron hair at low temperature. According to the test, amino acid values gradually decreased in both bleached and colored hair. The results obtained through TGA-based thermal analysis confirmed that as brightness increases, hair moisture contents decrease. This study aimed to protect hair by suggesting a correct use of a flat iron by the hair dye type during hair coloring. It appears that the study results would help hairdressers minimize hair damage by using a hair dye at proper temperature.