• 제목/요약/키워드: azo dyes

검색결과 126건 처리시간 0.026초

아조염료와 디아조 성분의 분리 및 비교에 관한 연구 (Study for the separation and comparison of azo dyes and their diazo components)

  • 정혁
    • 분석과학
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    • 제19권1호
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    • pp.50-57
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    • 2006
  • 계면활성제를 완충용액에 섞어서 사용하는 미셀 모세관 전기영동법(micellar electrokinetic capillary chromatography, MECC)을 이용하여, 아조염료의 합성성분이면서 동시에 아조염료가 분해될 때 생성되는 H-acid modifier 혹은 2-naphthylamine-1,5-disulfonic acid 등의 디아조 성분에 대한 분석을 수행하고, 이 분리 결과를 Ion-Paring 메카니즘을 이용한 고성능 액체 크로마토그래피법과 비교하였다. 이 방법을 이용하여 Direct Blue 2, Direct Blue 6, Direct Blue 15 등의 직접염료 그리고 Reactive Orange 4와 같은 반응성 염료의 혼합용액을 완전히 분리할 수 있었다. 특히 각 염료의 환원용액을 H-acid, J-acid, ${\gamma}$-acid, orthanilic acid, sulfanilic acid 2-naphthylamine-1,5-disulfonic acid 등의 표준물질과 비교 분석한 결과, 사용한 각 염료의 디아조 성분인 H-acid modifier 혹은 2-naphthylamine-1,5-disulfonic acid에 대한 정보를 얻을 수 있었다. 본 연구의 결과를 토대로 Ion-Pair 크로마토그래피법과 모세관 전기영동법은 미지의 염료에 대한 성분확인 및 디아조 혹은 커플링 성분분석에 응용할 수 있음을 알 수 있었다.

Evaluation of New Direct Dyes for Mutagenicity Using the Salmonella Mammalian Mutagenicity Assay

  • Bae Jin-Seok;Freeman Harold S.
    • Fibers and Polymers
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    • 제6권4호
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    • pp.297-305
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    • 2005
  • A series of new direct dyes based on benzidine congeners, 2,2'-dimethyl-5,5'-dipropoxybenzidine and 5,5'-dipropoxybenzidine, were evaluated for mutagenicity in Salmonella typhimurium strains TA98 and TA100. All of the dyes examined were judged to be non-mutagenic with and without metabolic activation while toxicity was seen in some dyes at high doses. The study also suggested that the standard Salmonella mutagenicity plate-incorporated assay was an excellent method for evaluation of direct dyes for mutagenicity.

디메틸아미노안트라퀴논계 분산염료와 아조계 모노클로로트리아진형 반응염료에 의한 P/C혼방직물의 일단계 날염에 있어 고착거동 (Fixing Behaviors of Dimethylamino Anthraquinone Disperse Dyes and Monochlorotriazinyl Azo Reactive Dyes on P/C Blended Fabrics in One-Step Printing)

  • 박건용;서기성
    • 한국염색가공학회지
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    • 제19권3호
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    • pp.18-25
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    • 2007
  • The fixing behaviors of anthraquinone disperse dyes containing dimethylamino substituent, such as C. I. Disperse Violet 26(D.V.26) and C. I. Disperse Blue 14(D.V.14), or containing diamino substituent, such as C. I. Disperse Blue 73(D.B.73), and monochlorotriazinyl azo reactive dyes, such as C. I. Reactive Orange 13(R.O.13), C. I. Reactive Red 3(R.R.3). C. I. Reactive Yellow 2(R.Y.2) on polyester/cotton blend(P/C) fabrics were examined for the one-step printing of P/C fabrics. The high temperature steaming of $175^{\circ}C$ is the most satisfactory fixing method for P/C one-step printing with above disperse and reactive dyes among the four different fixing methods: $175^{\circ}C$ steaming, $102^{\circ}C$ steaming${\rightarrow}175^{\circ}C$ steaming, $190^{\circ}C$ thermosol, $102^{\circ}C$ steaming${\rightarrow}190^{\circ}C$ thermosol. $190^{\circ}C$ thermosol is unfit to fix R.R.3 and R.Y.2 whose heat stability is poor. It was found that D.V.26 and D.B.14 containing dimethylamino substituent are unstable for heat and alkali, but D.B.73 is stable for them to print P/C blend fabrics with R.O.13 which is also stable for heat. Therefore we found that D.B.73, R.O.13 and a pair of D.B.73 and R.O.13 were very suitable for one-step printing of P/C blend fabrics.

Blue dye의 Chromophore와 치환기에 따른 열안정성 특성 연구 (A Study of Thermal-stability of Blue Dyes Depending on Dye Chromophore and Substituents)

  • 김태헌;이주홍;강은진;최재홍
    • 한국염색가공학회지
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    • 제33권4호
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    • pp.169-181
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    • 2021
  • Five dyes based on phthalocyanine, a dye on azo, and a dye on anhraquinone were prepared from corresponding starting material to investigate the effects of substituent on thermal-stability of dyes which is essentially required to apply to the color filters. Synthesized dyes were confirmed their chemical structure using by 1H-NMR, MASS and Elemental analysis. The thermal-stability was evaluated by the weight reductions measured by TGA analysis comparing to that of conventional C.I. Pigment Blue 15:6. The absorption maxima were measured by UV-VIS spectrophotometer then the effects of substituent on absorption maximum was also investigated.

아크릴/면 혼방직물의 염색성 (Dyeing Property of Acrylic/Cotton Fabric Blends)

  • Lee, Bong kyu;Park, Yoon Cheol;Kim, Jin Woo
    • 한국염색가공학회지
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    • 제7권2호
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    • pp.17-23
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    • 1995
  • In order to study the dyeing property of acrylic and cotton blends with cationic and reactive dyes, staining on cotton of cationic dyes, stability of cationic dyes, and fastness properties in various conditions were investigated. The restlts obatined from this study are summarized as follows: 1. Cationic oxazine dyes showed good stability in comparison with cationic azo dyes. 2. Staining of cationic dyes on cotton was gradually increased with pH and neutral salt concentration, but decreased with dyeing time and dyeing temperture.

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수분산 PU막의 염색 오염성 (Staining Properties of Waterborne PU Membranes)

  • 정동석;이문철
    • 한국염색가공학회지
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    • 제15권5호
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    • pp.285-293
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    • 2003
  • Waterborne PU membrane was prepared from waterborne PU dispersion solution to investigate physical and staining properties. The staining properties of waterborne PU membrane with acid dyes and disperse dyes were observed. The physical properties of the PU membrane were investigated by X-ray diffraction and IR spectroscopy. The staining property of waterborne PU membrane for azo acid dyes is better than that of disperse dyes. X-ray diffraction peaks sharpened and tensile strain and stress increased with heat setting temperature.

초임계 유체 염색용 아조계 분산염료 합성 및 PET 섬유에 대한 염색 특성 연구 (Synthesis of Azo based Disperse Dyes for Dyeing Polyester Fiber in Supercritical Carbon Dioxide)

  • 신승림;안경룡;이선혜;이승은;고은희;김창일;전근
    • 한국염색가공학회지
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    • 제31권3호
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    • pp.135-146
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    • 2019
  • A series of azo based disperse dyes were synthesized and applied to polyester(PET) fiber in supercritical carbon dioxide($ScCO_2$). Various aniline derivatives were used as diazo component and coupled with glycine ethylester or carbonic acid ethylester derivatives to give azo based disperse dyes. Depending on the various diazo substituents, absorption maxima varied from 415 to 529nm in acetone. Dyeing in $ScCO_2$ was carried out at $120^{\circ}C$ and 250bar pressure for 2hrs with 0.5% o.w.f. of dye concentration. Dyed PET fiber had excellent brightness and good light, washing and perspiration(acid/alkali) fastness properties.

유해 산 검출용 아조계 색소의 특성 및 응용 연구 (Properties and Application of Azo based Dyes for Detecting Hazardous Acids)

  • 신승림;전근;안경룡;김상웅;김태환;서동성;이창익
    • 한국염색가공학회지
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    • 제33권2호
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    • pp.49-63
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    • 2021
  • In this study, a convenient approach for sensitive, quick and simple detection of hazardous acids was investigated. A series of azo dyes were synthesized and applied as a chemosensor for the acid detection both on fibers and in solution. Various aniline, benzothiazole or isoxazole derivatives were used as diazo component and coupled with N-benzyl-N-ethylaniline or 2,2'-(phenylimino)bis-ethanol to give azo based dyes. The acid sensing phenomenon was observed by naked-eye and detection was further confirmed by UV-Vis spectrophotometer and hue difference(ΔH*) evaluation. The developed sensors showed a distinct and quick color change from yellow to magenta by addition of trace amounts of the hazardous acids. The absorption maxima was shifted to a longer wavelength by 70 ~ 150nm and hue difference(ΔH*) was 60 ~ 120°. A cotton fiber coated with Dye 1 exhibited excellent storage stability under various temperature(-30 ~ 43℃) and humidity(30 ~ 80%) conditions without discoloration and fading of the fiber sensors. Also the acid sensing properties were maintained.

초임계 유체 염색용 아조계 분산염료 합성 및 PET 섬유에 대한 염색 특성 연구 (Synthesis of Azo Based Disperse Dyes for Dyeing Polyester Fiber in Supercritical Carbon Dioxide)

  • 신승림;안경룡;이선혜;고은희;이인열;김창일;전근
    • 한국염색가공학회지
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    • 제33권1호
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    • pp.10-23
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    • 2021
  • In order to synthesize the dye suitable for supercritical carbon dioxide(ScCO2) dyeing, a series of azo based disperse dyes were prepared using various aniline derivatives as diazo components and indol derivatives as coupling components. Dyeing process in ScCO2 of the synthesized dyes was performed on PET fiber at 120℃ for 2 hrs under 250bar pressure with 0.5% o.w.f. of dye concentration. The absorption maxima varied from 400 to 580nm depending on the substituted groups in aniline derivatives and the indol derivatives. The dyes showed high molar extinction coefficients(ε) of 27,000~61,000M-1cm-1. Dyed PET fiber exhibited excellent brightness and good light, washing and perspiration(acid/alkali) fastness properties.