• Title, Summary, Keyword: Dye

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

  • 김삼수;김노수
    • Textile Science and Engineering
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    • v.28 no.8
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    • pp.61-69
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    • 1991
  • In dyebath of acid and cationic dye solution, the effects of pH, dye concentration and dyeing temperature on dyeing properties were investigated by the measurement of the interfacial electrokinetic potential of wool and acrylic fiber. 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 potential by Helmholtz-Smoluchowski formular, into surface charge density by Suzawa formular and into surface dye adsorption of fibers. The f potential of wool in dyebath of acid dye was decreased by the formation of ionic bonding between positively charged wool and acid dye. The f potential of acrylic fiber in dyebath of cationic dye was increased by the formation of ionic bonding between negatively charged acrylic fiber and cationic dye.

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Simple Method to Correct Gene-Specific Dye Bias from Partial Dye Swap Information of a DNA Microarray Experiment

  • KIM BYUNG SOO;KANG SOO-JIN;LEE SAET-BYUL;HWANG WON;KIM KUN-SOO
    • Journal of Microbiology and Biotechnology
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    • v.15 no.6
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    • pp.1377-1383
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    • 2005
  • In a cDNA microarray experiment using Cy3 and Cy5 as labeling agents, particularly for the direct design, cDNAs from some genes incorporate one dye more efficiently than the other, which is referred to as the gene-specific dye bias. Dye-swaps, in which two dyes are switched on replicate arrays, are commonly used to control the gene-specific dye bias. We developed a simple procedure to extract the gene-specific dye bias information from a partial dye swap experiment. We detected gene-specific dye bias by identifying outliers in an X-Y plane, where the X axis represents the average log-ratio from two sets of dye swap pairs and the Y axis exhibits the average log ratio of four forward labeled arrays. We used this information for detecting differentially expressed genes, of which the additionally detected genes were validated by real-time RT-PCR.

Physical Property and Optimal Operating Condition in the Salting-out Dye Crystallization System (염료·염석결정화계에서 물성과 최적조업조건)

  • Pyun, Yu Ri;Han, Hyun Kak;Jung, Hyong Ki
    • Korean Chemical Engineering Research
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    • v.47 no.2
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    • pp.157-162
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    • 2009
  • In this paper, the density, viscosity and solubility are measured to know the physical properties of dye. By changing the concentration of dye solution, the density change of the dye solution was very small and the viscosity of the dye solution was increased. Also, by changing the temperature of dye solution, the density change of the dye solution was increased but the viscosity of the dye solution was decreased. Solubility of dye conducts under the changing the salt and concentration of dye. In 20 wt% of dye and 15 wt% KCl, the amount of dye crystal is maximal. Also, batch salting-out experiments were performed with various conditions to know the optimal operating conditions of dye crystal. Under the various experiments, optimal operating condition was found based on amount of dye; added 15 wt% KCl, $25^{\circ}C$ temperature, 100 RPM, added at once.

The Dye Permeability of the Chlorinated Wool Fiber (염소화 양모의 염료 투과성)

  • 김진우
    • Textile Science and Engineering
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    • v.9 no.2
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    • pp.53-56
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    • 1972
  • The dye permeability of the chlorinated wool has been discussed in connect with dye constitution and water absorbency. The chlorinated wool tends to increase the water absorbency and the degree of swelling, which affect to the dye permeability. The mixture of equal parts of chlorinated wool and normal wool were dyed with simple acid dyes which differ in the number of sulphonic acid groups. It is confirmed that the ratio of dye take up by normal wool and chlorinated wool increases with increasing sulphonated groups of dye and the rate of dyeing decreases with increasing basicity of simple acid dye as elucidated by Townend and Simpson for dry-chlorinated wool.

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Enhancement of Dye Laser Energy by Mixed and Separate Method (색소의 혼합법과 분리법에 의한 색소레이저 에너지 증가의 비교)

  • 서욱창
    • Proceedings of the Optical Society of Korea Conference
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    • pp.46-48
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    • 1989
  • In order to increase the efficiency of a bluegreen dye laser, the mixed dye method and separate dye method have been employed and the results were compared. By the mixed dye method(LD490+BBQ), the enhancement of laser energy was 193%, while by the separate dye method(LD490/BBQ), it was 90%, It was also found that the mixed dye method made the laser threshold energy decreased.

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Diffusion of Reactive Dye in Sodium Alginate Thickener (Sodium Alginate호액 내에서의 반응성 염료의 확산)

  • 김노수;심유봉
    • Textile Science and Engineering
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    • v.22 no.1
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    • pp.45-52
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    • 1985
  • The diffusion coefficient of a reactive dye in sodium alginate thickener and viscosity of print paste were measured and discussed with varing sodium alginate concentration, temperature, hydrolysation of dye, urea, alkali and dye concentration. The diffusion coefficient of dye was increased rapidly by temperature rasing and a little by hydrolysation of dye. And it was decreased to some extent by the increase of sodium alginate, urea, alkali, and dye concentration. The activation energy of diffusion in the thickenery was also calculated from the relation of temperature and diffusion coefficient: it indicated around 8.4 kcal/mole.

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Black Dyeing of PET with Disperse Dyes of Three Primary Color (3원색 분산염료를 이용한 PET 섬유의 Black 염색)

  • Kim, Hae-Rim;Jang, Hae-Kyoung;Lee, Jung-Jin
    • Textile Science and Engineering
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    • v.45 no.6
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    • pp.331-336
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    • 2008
  • In black dyeing of PET fabric, high concentrations of disperse dyes of three primary color are generally required, which leads low exhaustion level of dyes and discharge of unfixed dye into dyehouse effluent. In this study, the effect of combination ratio of dye concentration, liquor ratio, and dyeing pH on dyeing and color property of black dyed PET fabric was investigated. From the results, high K/S values and low lightness $(L^*)$ of PET fabric could be obtained with relatively small amount (1%owf) of yellow dye on condition that red and blue dye were used in high concentration. The dyeing results of red dye were consistent with those of yellow dye while blue dye did not follow the trend. Use of small amount of blue dye and large amount of yellow and red dyes resulted in PET fabric of grayish red color instead of black. Dyeing and color property of black dyed PET fabric were found to be dependent upon dyeing pH while not on liquor ratio.

Dyeing Properties of Reactive Disperse Dye Having Bromoacrylamide Group (브로모아크릴아미드계 반응성 분산염료의 염색성)

  • 김광수;김성동;이종렬;이기훈
    • Textile Science and Engineering
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    • v.38 no.12
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    • pp.683-692
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    • 2001
  • A reactive disperse dye having $\alpha$-bromoacrylamide group was synthesized and its dyeing and fastness properties were compared with a disperse dye. The amount of absorbed reactive disperse dye was less on polyester fiber than disperse dye, and was much higher on nylon fiber. When polyester and nylon fiber were simultaneously dyed in a dye pot, nylon fiber absorbed more reactive disperse dye than polyester fiber. The use of carrier or the variation of dyebath pH were not sufficient for same color depth on both fibers. The N/P union fabric could be dyed with the reactive disperse dye and its color fastnesses were good to excellent.

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AN EXPERIMENTAL STUDY ON PENETRATION OF DYE IN FILLING MATERIALS (수종(數種) 수복물(修復物)의 색소침투(色素浸透)에 관(關)한 실험적(實驗的) 연구(硏究))

  • Lee, Myung-Chong
    • Restorative Dentistry and Endodontics
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    • v.4 no.1
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    • pp.29-34
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    • 1978
  • The purpose of this study was to measure penetration of dye stuff(5% Methylene blue, Hematoxylin, Crystal violet and Safranin-O) on silicate cement, Adaptic, Hi-pol and unfilled resin. Each filling material was mixed on the mixing pad and the mixed material was inserted with condensation force of 500gr, 1000gr and 2000gr and without condensation force into preformed glass tube (10mm in diameter and 10mm in height). The specimen was stored in the air for 24 hours, then specimen was immersed in various dye solution (5% methylene blue, hematoxin, crystal violet and safranin-O) for different period of time (l hour and 24 hours). These dye-treated specimen was cut horizontally at the middle portion and the dye penetration in cut surface was measured. Following results were obtained. 1. Pentration of various dye was excessive in silicate cement with and without Condensation force. 2. There has been no evidence of dye penetration in unfilled resin. 3. Dye penetration occurced with in 1 hour period and the extending time didn't affect the dye penetration.

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Dyeing of Wool with Reactive Dyes and Its Fiber Protective Effects (반응염료에 의한 양모염색과 상해방지 효과)

  • 김기천;김진우
    • Textile Science and Engineering
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    • v.32 no.7
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    • pp.646-653
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    • 1995
  • Dyeing properties and fiber protective effects of two bifunctional reactive dyes, Rifafix Red BBN(C.1. No. ursavailable, dye I) and Rifafix Red 3BN(C.I. Reactive Red 241, dye II), on wool were investigated at various pH values. Dye I which has two solfonic groups showed the higher degrees of absorption and fixation than dye II which has four sulfonic groups. And dye II was more sensitive to pH values than dye 1. At lower pH values, the blocking of basic sites of wool chain by sulfonic groups had iuluence on the deuces of absorption and fixation only at higher dye concentration. But at higher pH values, the effects appeared at lower dye concentration. Alkali solubility of wool was reduced by dyeing with bifunctional reactive dyes to a greater extent than monofunctional reactive dye of similar structure. And the wool dyed with bifunctional dyes was increased in its thermal stability.

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