• Title/Summary/Keyword: Disperse dyeing

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반응성, 분산, 산성염료 종류에 따른 폐수처리 시 거동 비교

  • Song, Mun-Hwan;Son, Seung-Hwan;Choe, Eun-Gyeong
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2008.04a
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    • pp.172-174
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    • 2008

  • The study has attempted to compare the behavior of reactive, disperse and acid dyes when wastewater from these three kinds of typical dyestuffs were treated by chemical coagulation and NF membrane in pilot scale. Disperse dyeing wastewater showed the tendency of easier removal in TOC and COD and especially in color. This is probably due to low water-solubility of disperse dyes compared with reactive and acid dyes and is a positive result in terms of water reuse. Bio-kinetic constants, ${\mu}$max, $K_s$ of reactive, disperse and acid dyes were obtained, implying that their biodegradability are not significantly different.

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Effect of the changes in Micropore Structure on the Dyeability of BTCA Finished Cotton Fibers (BTCA로 방추가공된 면섬유의 기공구조 변화가 염색성에 미치는 영향)

  • 최연주;유효선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.27 no.11
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    • pp.1300-1306
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    • 2003

  • Cotton fibers were treated, with 1, 2, 3, 4-butanetetracarboxylic acid (BTCA) which is formaldehyde-free reagent to impart durable press performance. The dyeability, dyeing rate, and diffusion coefficient, of BTCA treated cottons were compared to prove the changes of pore size structure using direct dyes and disperse dyes. Diffusion coefficients of BTCA treated cotton fibers were determined at acidic conditions to figure out the effect of swelling. Since the dyeability of BTCA treated cotton fibers dyed with direct dyes were reduced, it is considered that the dyeability to direct dyes is related to the quantity of residual large pores. But, the dyeability to disperse dyes were increased due to the less reduction of small pore sizes and the increase of hydrophobicity in BTCA treated cotton cellulose. The dyeability to direct dye and disperse dye were decreased more at acidic conditions than at neutral conditions. It seemed that the swelling of pores in the fiber were inhibited.

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The Analysis of the Micro-structure of Oxygen Plasma Treated PET Using a Nitrogen Porosimeter (Nitrogen Porosimeter를 이용한 산소 플라즈마 처리 PET의 미세구조 분석)

  • 김병인;김태경;조규민;임용진
    • Textile Coloration and Finishing
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    • v.11 no.6
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    • pp.1-6
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    • 1999

  • The porosities of PET fibers were investigated using a nitrogen porosimeter according to oxygen plasma treatment and dyeing with a disperse dye, and they were discussed in terms of the change of internal micro-structure of the PET fiber. The total pore volume, surface area and average pore size of the plasma treated PET fibers increased expectably compared with the untreated sample. The PET fibers treated with oxygen plasma and then dyed with a disperse dye were increased significantly in the surface area and the total pore volume comparing with those of plasma treated only, but decreased in the average pore size. The increase of the surface area, after dyeing, of the plasma treated PET fibers was due to addition of the surface area of the dye itself to that of the PET fiber. The increase of the total pore volume of the plasma treated PET fibers by dyeing, which is the opposite result to the general idea that the pore volume of fibers would be reduced by occupation of dye molecules in the pores, could be explained by the free-volume model. This is that the amorphous region in the fiber expanded by occupation of dye molecules, and the marginal space surrounding dyes was generated as many smaller pores, and the decrease of the average pore size of the dyed sample also could be explained The decrease of the average pore size was caused by the splitting of a larger pore into smaller pores.

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DYEING BEHAVIOR OF NEW DISPERSE-REACTIVE DYES

  • Kim, Tae-Kyung;Oh, Sea-Wha;Shin, Seung-Rim
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2002.04a
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    • pp.9-12
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    • 2002

  • The Dyestuff is fixed to the fiber to color it in a unique way depending on the chemistry between them. Whenever there arose problems in coloring fibers, the chemistry of dyestuff could be adjusted to solve them. That manner new concept dye classes, e.g., reactive dyes, disperse dyes, cationic dyes, have arrived along with the introduction of new fibers. The attempt has made to introduce the new reactive dye to solve this problem.

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