• 한국잠사곤충학회지
• /
• 제27권2호
• /
• pp.40-46
• /
• 1985

구핵부가형 반응성 염료인 C.I. Reactivo Blue 19와 산성 염료인 C.I. Acid Blue 138로 각각 견을 평형염착시켜 온도 및 pH에 따른 염착량 및 고착량을 구하여 각 조건에서의 염착거동을 비교 검토하였다. 1) 염착은 pH 및 온도가 낮을수록 양염료 모두 증가하였고, 반응성 염료인 경우, pH 8.5, 7$0^{\circ}C$에서 최대 고착량을 나타내었다. 2) 산성인 경우 반응성 염료는 산성 염료와 같은 거동을 나타내었다. 3) 산성 및 반응성 염료인 KL은 pH의 감소에 따라 증가하였고, Kp는 전자인 경우 증가, 후자인 경우 감소하였다. 4) 온도가 상승할수록 양염료 모두 KL은 감소하였고, 표준친화력은 증가하였다. 5) 산성 및 반응성 염료의 염착반응은 발열반응이고 표준엔트로피는 정의 값을 나타내었다. 6) 강산성측에서는 산성 반응성 염료 모두 Langmuir형 미착과 Nernst형 미착의 합으로 나타낼 수 있다.

• 분석과학
• /
• 제19권1호
• /
• pp.31-38
• /
• 2006

Ion-Paring을 이용한 고성능 액체 크로마토그래피법과 계면활성제를 완충용액에 섞어서 사용하는 미셀 모세관 전기영동법(micellar electrokinetic capillary chromatography, MECC)을 이용하여 아조염료의 합성성분이면서 동시에 독성을 나타내는 분해물인 H-acid, J-acid, ${\gamma}$-acid, orthanilic acid, sulfanilic acid 그리고 2-naphthylamine-1,5-disulfonic acid 등의 디아조 성분에 대하여 분석을 수행하였다. 같은 방법으로 Acid Orange 7, Acid Orange 5, Acid Blue 92 등의 산성염료와 Direct Red 80 등의 직접염료와 같은 반응성 염료 및 Calcion에 대한 분리를 시도한 결과 모든 염료에 대한 완전한 분리를 얻었으며, 특히 각 염료의 환원용액을 H-acid, J-acid, ${\gamma}$-acid, orthanilic acid, sulfanilic acid 혹은 2-naphthylamine-1,5-disulfonic acid 등의 표준물질과 비교 분석한 결과 사용한 각 염료의 디아조 혹은 커플링 성분을 완벽하게 분석할 수 있음을 알 수 있었고, 따라서 Ion-Pair 크로마토그래피법과 모세관 전기영동법은 미지의 염료에 대한 성분확인 및 디아조 혹은 커플링 성분분석에 응용할 수 있음을 보였다.

• 청정기술
• /
• 제9권3호
• /
• pp.145-151
• /
• 2003

청정생산방법론을 적용하여 염료생산공정의 청정화를 꾀하고자 하였다. 본 고에서는 반응중에 사용되는 공정수와 유기용매인 DMF의 회수방안을 모색하고, 고급산성염료 제조공정 보완을 통한 제품질 향상 방안을 마련하고자 하였다. 청정생산방법론의 적용순서는 기업경영진의 결정, 대안도출, 대안평가 및 우선순위 결정, 실행, 모니터링 및 지속적 실행단계의 절차를 따라 수행하였으며, 이의 수행결과 DMF의 회수와 함께 용수사용량을 25% 이상 절감할 수 있었으며, 고급산성염료의 경우 2배 이상의 용해도 향상을 통하여 제품의 가치를 상승시킬 수 있었다.

• 한국염색가공학회지
• /
• 제12권1호
• /
• pp.44-51
• /
• 2000

The conventional one bath exhaust dyeing system of nylon]/cotton blends with acid dye/direct dye involves a lot of neutral salt which affect dyeability of acid dyes. Because of conventional one bath exhaust dyeing system of nylonl/cotton blends with acid dye/direct dye needs acid dyes adjusted at a neutral liquor, suitable acid dye is limited. To improve dyeing property of nylon/cotton blends, cotton component was pretreated with cationizing agent containing chlorohydrine group in aqueous solution of sodium hydroxide. This study was carried out to investigate dyeing possibilities of nylon/cationized cotton blends with acid dye/direct dye in a non-neutral salt dyebath by one bath two step method. The concentration of direct dye was 1.0%, 0.7%, 0.3%o.w.f. respectively at a non, 1%, 3%owf of reserving agent for being almost equal color strength between nylon and 3% cationized cotton when nylon/3% cationized cotton blends was dyed with acid dye/direct dye at concentration of acid dye(1%o.w.f.) by one bath two step method.

• 한국의류산업학회지
• /
• 제7권3호
• /
• pp.339-345
• /
• 2005

It is difficult to dye nylon/viscose rayon mixture fabrics by one-bath one-step dyeing method, because acid dyes and reactive dyes require acidic dyebath for adsorption and alkaline dyebath for fixation respectively. In order to overcome the disadvantage of the conventional two bath two step dyeing method of nylon/viscose rayon mixture fabric, it was pretreated with cationizing agent containing chlorohydrine group in aqueous solution of sodium hydroxide. The pretreated nylon/viscose rayon mixture fabrics produced cationized fabrics that could be dyed with acid dyes and reactive dyes under neutral condition. This study was carried out to investigate dyeing possibilities, surface reflectance spectra and color characteristics of cationized nylon/viscose rayon mixture fabrics with acid dyes and reactive dyes in a non-electrolytic and neutral dyebath by one bath one step dyeing method.

• 한국염색가공학회지
• /
• 제16권5호
• /
• pp.1-7
• /
• 2004

Because acid dyes and reactive dyes require acidic condition for adsorption and alkaline condition for fixation respectively, it is difficult to dye nylon/cotton blends in one-bath one-step dyeing method. In this paper we tried to find out the suitable dye and dyeing condition for one-bath one-step dyeing of nylon/cotton blends. MNT type reactive dyes showed higher exhaustion on cotton as compared with MCT type dyes at neutral pH, which means that the MNT type reactive dyes are preferable for one-bath one-step dyeing method. The optimum condition for one-bath one-step dyeing of nylon/cotton blends was found to be pH 7. Wash fastness of fabrics dyed with half-milling type acid dyes was superior to that of fabrics dyed with levelling type acid dyes, when MNT type reactive dyes were used together.

• 한국염색가공학회지
• /
• 제6권3호
• /
• pp.60-66
• /
• 1994

With the view of studying on the dual adsorption mechanism of acid dyes in connection with the structural difference of silk fibroin, silk fiber and silk fibroin memberane were used for equilibrium dyeing at $60^{\circ}C$, $70^{\circ}C$, $80^{\circ}C$ and pH 3.2, pH 5.0. The dyes used were C.I.Acid Orange 7 and C.I.Acid Red 88 introduced aromatic hydrocabon into Acid Orange 7. From the adsorption isotherm experiment, the total uptake of dyes can be described by Langmuir sorption and Nernst partition. Nernst partition. Nernst partition coefficient $K_1$ decrease of crystalline regions and orientation. The saturation value S of Acid Red 88 were large than total amino group contents and it was attributed it hydrophobic bond. On the other hand, the standard afficity and enthalpy were increased with the in crease of hydrophobic part of dyes. Both $k_1$ and $K_2$ were decreased with the increase of pH, but $k_2$ were more effected than $K_1$.

• 한국잠사곤충학회지
• /
• 제33권1호
• /
• pp.9-12
• /
• 1991

견섬유에 대한 산성 levelling 및 milling계 염료의 혼합염색에 있어서 그 염색특성에 관한 기초적인 자료를 얻기 위하여, C. I. Acid Orange 7과 C. I. Acid Blue 138을 사용하여, 염욕의 pH를 각각 pH 3, 4, 5, 염색온도 7$0^{\circ}C$의 조건으로 단일 및 혼합염색을 실시하여 흡착속도에 관하여 고찰했다. 1)C. I. Acid Orange 7 A)pH 3 : 염색초기에 있어서 단일염색에 비해 혼합염색을 했을 때 흡착속도가 빠르고 흡착량도 많았다. B)pH 4, 5 : 단일염색 및 혼합염색 양자간의 흡착속도 및 양에 거의 차이가 없었다. 2)C. I. Acid Blue 138 A)pH 3, 4, 5 전부 혼합염색일 때가 염색초기에 더 빠른 흡착속도와 더 많은 흡착량을 나타냈다. B)염색시간이 경과함에 따라 혼합염색과 단일염색간의 흡착속도와 흡착량의 차이가 인정되지 않았다.

• 한국잠사곤충학회지
• /
• 제34권2호
• /
• pp.52-57
• /
• 1992

견의 저온염색용 조제(K-1)를 사용하여 염료 농도, 염욕의 pH, 염색시간에 따른 염색속도를 구하여 이 저온염색용가 염색에 미치는 영향을 분석한 결과를 다음과 같이 요약한다. 1. pH 7에서 K-1의 농도가 증가할수록 무첨가구에 비해 흡진율은 증가 하였으며, K-1의 농도가 3% o.w.f. 이상에서는 증가의 경향이 둔화되었다. 2. pH 5에서도 무첨가보다 K-1의 첨가구에서 높은 흡진율을 보였으며, pH 7의 5$0^{\circ}C$ 첨가구가 pH 5, 5$0^{\circ}C$의 무첨가구보다 확산성은 높게 나타났다. 3. 염료 농도별로 볼 때 pH 7과 pH 5에서 모두 K-l 첨가구에서는 무첨가구보다 흡진율이 클 뿐만 아니라 염료 농도에 따른 흡진율 감소가 적게 일어났다.

• 한국염색가공학회지
• /
• 제11권2호
• /
• pp.19-26
• /
• 1999

Strains degrading and decolorizing acid dyes, Nylosan red E-BL 150%. were isolated from natural system, was named as ARK3. The optimal culture conditions of temperature and pH were $35^\circ{C}$, 7.0, respectively. Growth rate of cells in conditions of aerobic shaking more than standing culture conspicuously increased, and optical density of those to strain ARK3 were found as 1.38 and 0.25 after 42 hrs. Decolorization efficiency in batch culture which used as immobilization media to natural zeolite was 15% after 6 hrs, while suspension culture was 5%, also its of immobilization and suspension culture were 90% and 85% after 48 hrs, respectively. Decolorization efficiency of air-lift bioreactor was more than 90% to a dilution rate of $0.038hr^{-1}$, but that was decreased as 70%, when the dilution rate was $0.05hr^{-1}$. Even though at maximum dilution rate of this study, there was not appeared "wash out" phenomienon of biomass. Decolorization efficiency was 97.7% at a dilution rate of $0.025hr^{-1}$, when influent dye concentration was $100mg/\ell$. But if influent dye concentration increased as $150mg/\ell$, even though MLVSS increased, that of treatment water decreased as 93%. Also, when influent dye concentration increased as $200mg/\ell$ and $300mg/\ell$, decolorization efficiencies of treatment water abruptly decreased as 85% and 63%, respectively. Decolorization efficiency was more than 92% to the limit volumetric loading rate of $3.75mg/\ell\cdot{hr}$hr, without regard to variation of influent dye concentration or hydraulic retention time. if volumetric loading rate was more than $3.80mg/\ell\cdot{hr}$, at same condition, decolorization efficiency was lower decrease of retention time than increase of influent dye concentration.entration.