나일론-PET 분할형 극세사의 1욕 1단계 염색

조현태,박철권,Cho, Hyeon-Tae,Park, Chul-Kwon 한국섬유공학회 2009 한국섬유공학회지 Vol.46 No.1

To verify the dyeing behaviors of disperse, acid dye, and metal complex dye on nylon/PET(N/P) split type microfiber in the one bath-one step dyeing, the exhaustion curves of the dyes in single and mixed dye bath were measured under different dyeing temperature and pH of dye bath. Exhaustion behaviors of disperse dye in the one bath dyeing of NIP split type microfiber with disperse dye/acid dye or disperse dye/metal complex dye were not significantly affected by dyeing temperature and pH of dyebath. Acid dye showed high temperature dependency of adsorption-desorption behavior during elevation of dyeing temperature in the one bath dyeing of N/P split type microfiber with disperse dye and acid dye. Metal complex dye in the one bath dyeing of N/P split type microfiber with disperse dye and metal complex dye showed also the temperature dependency of adsorption-desorption, but the final absorption was higher than that of acid dye in the same dyeing conditions and increased with decrease of dyebath pH. The staining of disperse dye on nylon was not effected by dyeing temperature but was decreased with the decrease of pH in the one bath dyeing of N/P split type microfiber.

분산형캐티온염료/산성염료에 의한 CDP(cation dyeable polyester)/견 교편물의 염색에 관한 연구

성우경 ( Woo Kyung Sung ) 한국의류산업학회 2011 한국의류산업학회지 Vol.13 No.5

This study was carried out to investigate dyeing characteristics of CDP(cation dyeable polyester)/silk knitted fabrics with disperse type cation dyes/acid dyes by one bath dyeing method in comparison with two bath dyeing method in the interests for rationalization of the dyeing process. The apparent color depth(K/S) of the disperse type cation dyes with CDP and that of acid dyes with silk decreased slowly with increasing pH values of dyebath with the exception of sharp decrease at alkali region for CDP. The contamination behavior of CDP by the acid dyes and that of silk by the disperse type cation dyes decreased with progressing of dyeing. The migration ratio(%) of the disperse type cation dyes with CDP is low compared with that of acid dyes with silk. The sediment in mixed dying solution of disperse type cation dyes and acid dyes remarkably less compared with that of regular type cation dyes and acid dyes at 100˚C regardless applying of preventer agent of precipitation. When CDP/silk knitted fabrics was dyed with by with mixtures of disperse type cation dyes/acid dyes one bath or two bath dyeing method, the characteristic of reflectance spectra of CDP components were greatly influenced by disperse type cation dyes and that of silk components by acid dyes. It was confirmed that K/S values of each components of CDP/silk knitted fabrics dyed by one bath dyeing method decreased slightly compared with two bath dyeing method.

Dyeing Properties of Nylon, PET, and N/P Mixture Fabric with Reactive-disperse Dyes Having a Sulfatoethylsulfone Group

Kim, Sung-Dong,Choi, Yeon-Ji,Lee, Hyo-Young,Lee, Jong-Lyel 한국섬유공학회 2012 FIBERS AND POLYMERS Vol.13 No.2

The dyeing and color fastness properties of two reactive-disperse dyes containing a sulfatoethylsulfone group on nylon, PET and N/P mixture fabrics were examined. The rate of dyeing on nylon fabric was greatly dependent upon dye bath pH. The final dye uptakes at all pH, however, were as high as 97 %. Color strength of the dyed nylon fabric linearly increased up to 0.5 %owf and then slowed down over 1 %owf dyeing. Washing and rubbing fastness of the dyed nylon fabric were excellent, but grade of light fastness was moderate. Dyeability of the reactive-disperse dyes on PET fabric was not much affected by pH, and K/S values of PET fabric dyed at pH 5-8 were lower than those of nylon fabric at all pH examined. Build-up and color fastnesses properties on PET fabric showed the same tendency with nylon fabric. The rate of dyeing of the reactive-disperse dyes on nylon fabric was faster than on PET fabric when both fabrics were dyed simultaneously in the same dye pot, resulting in higher color strength of nylon than PET. The reactive-disperse dyes were found to be adequate to the one-bath, one-step dyeing of N/P mixture fabric when applied at pH 5 and $120^{\circ}C$.

A Three-Bath Process for Dyeing Cotton with Bis-Azo Bi-Functional Reactive Dyes Based on Diazonium Salts

P. R. Hande,P. P. Badve,R. G. Dugane,S. S. Bhagwat,P. M. Bhate 한국섬유공학회 2020 Fibers and polymers Vol.21 No.12

Mono-azo dyes possessing a primary aromatic amino group have been shown to react with cotton by diazotizationfollowed by treatment with soda ash at 60-65 °C thereby acting as monofunctional reactive dyes. Bis-azo dyes bearing twoamino groups are expected to act as bi-functional reactive dyes and exhibit enhanced dye-cellulose fixation. This work showsthat the difference in fixation exhibited by mono-azo and bis-azo dyes is statistically significant at 95 % confidence level infavor of the latter group. This work describes a three-bath dyeing process which reduced the amount of consumed water by60.6 % and the environment factor by 62.2 %. The newly developed three-bath process also conserves energy by 74.1 %. Hence, a new class of bifunctional reactive dyes without externally attached reactive systems is, in principle, available. It willhave the advantage of reducing raw materials and manufacturing costs. It also employs a sustainable reactive dyeing process.

아크릴기를 도입한 반응성 분산염료의 합성과 염색성

박동수,박종호,정재윤,Park Dong-Soo,Park Jong-Ho,Jung Jae-Yun 한국섬유공학회 2005 한국섬유공학회지 Vol.42 No.1

Reactive disperse dyes having acryloxyethyl group were synthesized and their dyeing and fastness properties were compared with disperse dyes. The K/S value of the reactive disperse dyes were similar to those of the disperse dyes on polyester fiber and were much higher on nylon fiber. When polyester and nylon fibers were dyed in a dye pot at the same time to simulate the condition of dyeing N/P union fabrics, the difference of K/S values between polyester and nylon fibers dyed with reactive disperse dyes were smaller than that with the fibers dyed with disperse dyes. The dyeing fastness properties of reactive disperse dyes were good.

Reuse of Effluent Water Obtained in Ultrafiltration of Reactive Dyes

Smaro Lykidou,Evangelos Karanikas,Chrysa Anagnostopoulou,Nikolaos Nikolaidis,Eforia Tsatsaroni 한국섬유공학회 2019 Fibers and polymers Vol.20 No.6

The Reactive Black 5 and Reactive Red dyestuffs have been synthesized in the laboratory. The synthesis wasobtained by diazotization of 1-amino-phenyl-4-beta hydroxyethyl sulfone sulfate ester and coupling with 1-amino-8-hydroxynaphthalene-3,6-disulfonic acid (H-acid) (mole ratio 2:1) (Reactive Black 5Na) and (mole ratio 1:1) (Reactive RedNa). The dye was purified-concentrated by ultrafiltration technology and the permeate (waste) was used as dye bath in theexhaustion of cotton and polyamide with the sodium salt of Reactive Black 5 (RB5Na) and the sodium salt of Reactive Red(RRNa). The same dyeing was also made with fresh water as dye bath. Fastness properties were also measured in both casesand the results were compared. Color measurement results of the dyeings were almost the same when the waste as dye bathwas used.

Zero valent iron-mediated rapid removal of bis-azo dye in solution amended with dyebath additives: Biphasic kinetics and modelling

Alok Sinha,Raja Kumar 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.11

The effect of widely used dye-bath additives, namely sodium chloride, ammonium sulfate, urea, acetic acid and citric acid, on the reductive removal of azo dye AR73 by zero valent iron was investigated. Na+ induced ‘salting out’ effect on the dye molecules complemented with Cl− induced pitting corrosion of ZVI surface led to improved dye removal rate with increasing NaCl concentration. ‘Salting out’ effect of (NH4)2SO4 together with enhanced iron corrosion by aggressive SO4 2− and reducing effect of ‘sulfate green rust’ benefitted the reaction rates. However, beyond 1,000mg/L (NH4)2SO4 concentration, complex formation of NH4 + and SO4 2− with iron oxides compromised ZVI reactivity. Urea inhibited the reaction by its chaotropic effect on the dye solution and also by wrapping the ZVI surface. Enhanced iron corrosion by organic acids improved the reaction rates. The dye removal followed biphasic kinetics with initial rapid phase, when more than 95% dye removal was observed in all the studies, followed by a slow phase. The experimental data could be well evaluated using biphasic rate equation (R2>0.995 in all the cases). Highest dye removal rate of 0.900 min−1 was achieved at pH 2 with all the additives amended. AR73 removal could be modelled using biphasic model considering the individual effect of each additive. Rapid dye reduction capability at varied solution composition makes ZVI more advantageous and promising for wastewater treatment.

Coagulant bath medium effect towards polylactic acid membranes structure and methylene blue dye removal

Amira M. Nasib,Stephen Simon,Syahmie M. Rasidi,Siti Kartini E. Ab. Rahim,Hoo Peng Yong,Ng Qi Hwa,Khairiraihanna Johari Techno-Press 2024 Advances in materials research Vol.13 No.3

The asymmetric polylactic acid (PLA) membrane was prepared via phase inversion method using non-solvent induced separation (NIPS) technique. This study aims to synthesized as well as to characterize the PLA membrane and evaluating the membrane performance on water flux and permeability. In addition, this research also studied the removal performance of methylene blue dye. The polymer solution has been prepared using 12 wt.% of PLA and dissolved in 88 wt.% of Dimethylacetamide (DMAc) as a solvent. Then, the cast film was immersed in different ratio of coagulant bath medium (distilled water: methanol: ethanol) ranging from 100:0:0, 75:25:0, 75:0:25 and 75:12.5:12.5, respectively). Several characterizations were performed which include, membrane contact angle and membrane porosity. Performance PLA membranes were determined in terms of water flux and permeability at 1 bar transmembrane pressure using dead-end permeation cell. Finally, methylene blue (MB) removal efficiency was tested at the same transmembrane pressure. The findings revealed that the increase of alcohol concentration in coagulant bath resulted in higher porosity and lower contact angle. In short, MB dye rejection efficiency is also closely related to the amount of alcohol ratio used in coagulant baths. Increases in concentration of methanol and ethanol in coagulant bath medium increases the membrane porosity thus increased in efficiency of methylene blue rejection.

분산염료/산성염료에 의한 PTT(polytrimethylene terephthalate)/견 교직물의 염색에 관한 연구

성우경 ( Woo Kyung Sung ) 한국의류산업학회 2010 한국의류산업학회지 Vol.12 No.1

Modification of Woolen Fabric with Plasma for a Sustainable Production

Meliha Oktav Bulut,Nurul Huda Sana 한국섬유공학회 2018 Fibers and polymers Vol.19 No.9

In this study, the effects of corona plasma process on the dyeability and certain physical properties of woolen fabric were investigated. For this purpose, acid and 1.2 metal complex dyes, which are the most applicable dyes in the wool market were used. The patterns were examined to assess their dyeability, wettability, pilling resistance, alkali solubility, and strength values. The surface morphology and chemical structures were tested by X-ray photoelectron spectroscopy and alkali solubility analyses and also scanned by electron microscopy. Hydrophility indexes of the dyes that were used were determined. With the results of the experiments, their hydrophobic index is of vital importance, which is a factor for plasma efficiency on color depth. By using plasma treatment on woolen fabric, it is achievable to get a product with high hydrophility and pilling resistance values, dyeability, and less burdened dyeing bath.