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1.
Azo disperse dyes (D1-D13) were prepared by various diazotized aryl amines coupled with N-(phenyl)-2-[(4-phenyl-1,3-thiazol-2-yl)amino] acetamide. All the azo disperse dyes have been characterized by their percentage yield, UV-VIS spectroscopy, elemental analysis, IR spectroscopy, 1H-NMR spectroscopy, and dyeing performance on polyester fiber. These dyes were applied to polyester fabric by HTHP method and their fastness properties were evaluated. All the dyes gave moderate to excellent fastness properties on polyester fiber. The main focus was to synthesize azo disperse dyes that give good dyeing property along with pharmacological activity. Therefore, the synthesized compounds were examined for their antimicrobial activity at various concentrations using well-known Kirby-Bauer disk diffusion method. 相似文献
2.
Zhi-Hua Cui Gang Xia Jian-Rong Gao Wei-Guo Chen Ni-Ping Liu Qi Ou Ren-Liang Wang 《Fibers and Polymers》2017,18(9):1708-1717
Three alkali-clearable azo disperse dyes containing a carboxylic ethyl ester group (D1-D3) were readily synthesized using three different synthetic strategies. D1 was prepared from a carboxylic acid-containing dye by esterification with ethanol. D2 was prepared from a carboxylic ester-containing dye by transesterification with ethanol. D3 was prepared from a cyano group-containing dye by alcoholysis with ethanol and water. The molecular structures of the dyes were characterized by FTIR, mass spectrometry, 1H NMR, 13C NMR, and elemental analysis. The synthesized dyes and the control dyes were used to dye poly(ethylene terephthalate) fabric, and their washing and rubbing fastness properties following different after-treatment methods (reduction clearing and alkali clearing) were examined and compared. The carboxylic ethyl ester-containing disperse dyes show good alkali clearing ability on poly(ethylene terephthalate) fabric and cause fewer environmental issues due to the absence of reductants, no production of aromatic amines with high toxicity and carcinogenicity, as well as the low toxicity of the dye hydrolysate ethanol. 相似文献
3.
Five yellow disperse dyes were synthesized and their dyeing, fastness and photodegradation behaviors were investigated. It
was found that dyes derived from phenylindole and N-alkylaminobenzene showed dye uptake directly proportional to the dye concentration,
but the build-up of dyes derived from carbazole and pyridone were not good. The wavelength at maximum absorption, molar extinction
coefficient, and the tendency to the photodegradation were strongly dependent on the electron donating ability of the coupling
component. The dye, whose coupling component was phenylindole, possessed the excellent dyeing properties and the high degree
of lightfastness. UVA had an effect on the inhibition of the photodegradation especially for the easily photodegradable dyes. 相似文献
4.
Moosa Sadeghi Kiakhani Mokhtar Arami Kamaladin Gharanjig Javad Mokhtari Niyaz Mohammad Mahmoodi 《Fibers and Polymers》2009,10(4):446-451
A series of novel monoazo disperse dyes based on N-carboxylic acid-1,8-naphthalimides have been synthesized via 4-(4-amino-1,8-naphthalimido) butanoic acid as diazo components
and various couplers. The synthesized dyes were characterized with elemental analysis, differential scanning colorimetry,
Fourier transform infrared spectroscopy, proton nuclear magnetic resonance, and UV-visible spectroscopic techniques. The molar
extinction coefficient, wavelength maxima, and solvatochromism effect were obtained using chloroform, acetone, and N,N-dimethyl formamide as solvent. The results showed that the synthesized dyes had molar extinction coefficient of 20908 to
38939 l mol−1 cm−1, wavelength maxima of 409–549 nm, and positive solvatochromism by changing solvent from chloroform to N,N-dimethyl formamide. The synthesized dyes were applied on poly(ethylene terephthalate) using high temperature method. Dyes
1 and 2 showed high build-up properties on poly(ethylene terephthalate), whereas dyes 3 and 4 offered medium build-up. All
the dyes offered excellent heat fastness, good wash and rubbing fastnesses on poly(ethylene terephthalate) fabrics. The hydrolysis
of the synthesized dyes in alkali media indicated that the presence of a carboxylic acid group within the dye molecules provides
alkali-clearable potential. 相似文献
5.
Effects of chemical structure of disperse dyes applied to conventional and microdenier polyesters on the dyeing property and
washfastness were studied. It was found that washfastness of dyed polyester fabric is closely related to the degree of thermomigration
of disperse dye during heatsetting. The bulky disperse dye, which was synthesized by substituting two acetoxy groups of C.I.
Disperse Red 82 with two benzoxy groups, showed almost the same amount of absorbed dye by the microdenier polyester as C.I.
Disperse Red 82, but the degree of thermomigration was low and subsequent washfastness was excellent. The high grade of washfastness
of the bulky disperse dye might be caused by the increased dye-fiber interaction and the reduced mobility. 相似文献
6.
Eui-Jae Lee Kyung-Won Kim Geun-Hyeong Kim Chae-Eun Park Jae-Hong Choi 《Fibers and Polymers》2018,19(9):1791-1798
As the diameter of polyamide fibers decreased to finer denier, the dyeing fastness tends to be deteriorated due to the increase of their surface area, particularly both light fastness and wash fastness. In this study, three acid dyes were synthesized utilizing a sulfonation reaction starting from corresponding hydrophobic dye (for yellow and red dye) and dye intermediate containing a sulfonic acid group (for blue dye), those featured by high light fastness property. A Gaussian structural prediction model was used to determine the structure of the acid dyes prior to dye synthesis, and the optimal structures of three acid dyes were analyzed. Dye structures prepared were confirmed by 1H-NMR, mass spectroscopy, and elemental analysis. By using a UV-vis spectrophotometer, the absorption maxima and molar extinction coefficient were also measured for three acid dyes comparing to that of the corresponding disperse dye or blue dye intermediate. Judging from spectroscopic data, the introduction of sulfonyl groups led to increase of molar extinction coefficient and a bathochromic shift. 相似文献
7.
Taekyeong Kim Jongsuc Jung Kyungjin Jang Seokhan Yoon Mikyung Kim 《Fibers and Polymers》2009,10(2):148-153
A series of new monoazo yellow dyes having different alkyl substituents was synthesized to dye unmodified polypropylene fiber.
Color hue of the dyes exhibited light yellow with very high chroma enough to use as yellow primary color dyes. The affinity
of the dyes onto unmodified polypropylene was increased with the increase of the length of alkyl substituents. Therefore,
the hexyl-substituted dye having the longest alkyl group in this experiment showed very high color strength of dyeings with
K/S value of over 26 at maximum absorption wavelength. The color fastnesses to washing, rubbing and light were also improved
significantly for the longer alkyl substituted dyes, so that the hexyl-substituted dye exhibited a rating higher than 4∼5
for all kinds of fastnesses. 相似文献
8.
Niyaz Mohammad Mahmoodi Pardis Rezaei Cyrus Ghotbei Mohammad Kazemeini 《Fibers and Polymers》2016,17(11):1842-1848
In this paper, CuO/CNT nanocomposite was synthesized and its photocatalytic dye degradation ability for colored textile wastewater was studied. The characteristics of the nanocomposite were investigated by XRD, SEM and FTIR. The photodegradation of Direct Red 31 (DR31) and Reactive Red 120 (RR120) by CuO/CNT in presence of H2O2 was investigated. Photocatalytic dye degradation was determined by UV-vis spectrophotometer. Effects of catalyst dosage, initial dye concentration and salt on photodegradation performance were studied. The photocatalytic dye degradation ability of pure CuO and CuO/CNT nanocomposite is 78 % and 89 % for DR31 and 70 % and 87 % for RR120, respectively. The results showed that CNT increased the photocatalytic activity of CuO. The presence of salt decreases dye degradation efficiency. The dye degradation kinetics by nanocomposite followed first-order kinetic model. The reaction rate at 0.005 g catalyst was 0.0137 and 0.0105 min-1 for DR31 and RR120, respectively. It was found that the CuO/CNT nanocomposite as a photocatalyst could be used to degrade dyes from colored wastewater. 相似文献
9.
Dispersant-free PTT dyeing of temporarily solubilized azo disperse dyes based on pyridone moiety which contain β-sulfatoethylsulfonyl
group was investigated. The dyes were successfully applied to PTT without the use of dispersants. The color yields of the
dyes on PTT fabric were dependent on dyeing pH as well as dyeing temperature. The optimum results were obtained at pH 5–6
and 110 °C. The dyes showed alkali-clearing property and exhibited good to excellent fastness on the PTT fabric. The COD levels
of the dyeing effluent from the temporarily solubilized disperse dyes were much smaller than those from commercial disperse
dye. 相似文献
10.
Due to compact structure of meta-aramid fiber caused by the intermolecular hydrogen bondings of amide groups, the degree of crystallinity increased, thus its poor dyeing properties arises. Among commercial dyes used in many previous researches, the basic dyes showed comparatively higher exhaustion yields as comparing to those of disperse dyes and acid dyes. The anthraquinone moiety was adopted for good performances of light fastness on meta-aramid fiber. In this study, eight of anthraquinone dye was synthesized. The three of them were obtained from chloro-anthraquinone, by Ullmann reactions with the corresponding heterocylic residues such as morpholine and one of them was obtained from lueco quinizarine by condensation with the corresponding heterocylic residues. The others were prepared by quaternization from dyes above. The synthesized disperse and cationic dyes were dyed on meta-aramid fibers and investigated for their build-up dyeing properties and wash fastness. 相似文献
11.
Marzieh S. Javadi Javad Mokhtari Mahdi Nouri Mohammad J. Mehdipour 《Fibers and Polymers》2013,14(2):195-200
Two novel cationic softener containing mono-s-chloro triazinyl reactive dyes together with their analogues were designed. The dyes were synthesized via reacting an N,N-dimethyldodecylamine with p-nitrobenzyl bromide. The resultant was reduced using stannous chloride and hydrochloric acid to produce the primary amine. The quaternary ammonium salt containing primary amine was then diazotized to produce diazonium salt part of azo dye. The diazonium salt was then coupled to H-acid/J-acid reacted with cyanuric chloride and sulfanilic acid. The analogue dyes were prepared via the same route without quaternary ammonium salt making stage. The chemical structures of the novel dyes were characterized by FTIR, 1H-NMR, and elemental analysis. The spectroscopic properties of the dyes were determined in terms of λ max and ? max in aqueous solution. 相似文献
12.
Niyaz Mohammad Mahmoodi 《Fibers and Polymers》2014,15(2):273-280
In this paper, soy meal hull activated carbon (SMHAC) and titania nanoparticle (TiO2) were used as catalysts to degrade dyes. Activated carbon was prepared using soy meal hull. Degradation of dyes using single and binary catalyst systems was studied. Textile dyes were used as model pollutants. Photocatalytic dye degradation and mineralization were studied using UV-Vis spectrophotometer and ion chromatography (IC). The effects of pH, initial dye concentration, and salt on dye degradation were investigated. Dye solutions were decolorized completely (100 %). The presence of salts decreased dye degradation rate. Degradation of dyes followed first order kinetics model. Formate, acetate, and oxalate were detected as dominant aliphatic intermediates during dye degradation process. Nitrate, sulfate, and chloride anions were detected as dye mineralization products. 相似文献
13.
Nine disperse dyes have been synthesized by diazotization of 2-amino-4-(p-nitrophenyl)-5-nitrothiazole and coupled to substituted
N-alkylanilines. Spectral properties in the IR and visible range of the dyes obtained were investigated. The dyeing performance
of these dyes was assessed on nylon and polyester fibers. These dyes were found to give reddish brown to bluish violet shades
on dyeing with very good depth, brightness and levelness on nylon and polyester fibers. The dyed fibers showed fairly good
light fastness, very good to excellent fastness to wash, rubbing, perspiration and excellent fastness to sublimation. The
dyebath exhaustion and fixation on the fiber were found to be very good. 相似文献
14.
Six nano disperse dyes were prepared using corresponding O/W nanoemulsions which were obtained with sodium laurylsulphate
and caprylic triglyceride. The average particle size of the dyes prepared were in the range of 110–130 nm. Exhaust dyeing
using nano dyes resulted in low exhaustion yields of 17–26 % on regular polyester fiber and 28–38 % on ultramicrofiber polyester.
The observed low exhaustion yields of nano disperse dye can be explained by the solubilization of dye particles into surfactant
micelles as well as the high stability of the nanoemulsions, these might reduce the capacity of dye uptake onto the fibers.
However, higher K/S values of dyeings with nano dyes on ultramicrofiber sites compared to those on regular polyester sites
suggested their potential to be more efficient dyes for finer denier microfiber polyesters. 相似文献
15.
Upon UV irradiation wool fabrics can be photografted with photoactive acrylamido dyes at room temperature without photoinitiaors, which is eco-friendly coloration process compared with conventional adsorption-based dyeing. Acrylamide addition as a comonomer can improve the photografting probably by reducing the steric hindrance between the bulky dyes during the photocopolymerization. Even without photointiators and neutral salts, the optimal K/S values of the photografted wool reached upto 18.7 and 18.5 for Reactive Red 84 and Yellow 39 dyes respectively. The optimal UV-grafting coloration can be achieved when a UV energy of 25 J/cm2 was irradiated on the padded fabrics with 6.3 %owf dye containing 0.65 mole ratio of acrylamide to the dyes. Furthermore, the color fastness of the grafted fabrics was as good as those of conventionally dyed fabrics due to the copolymerization of dyes and comonomers. 相似文献
16.
Reactive dyes are used widely in cotton dyeing process. Reactive dyeing uses high amounts of inorganic salts to accelerate dye exhaustion. These salts are then discharged to the effluent, leading to serious environmental problems. Biodegradable organic salts can alternatively be used in the dyeing process. In this paper, a new liquid organic salt was synthesized by acid-base neutralization, which was used to replace inorganic salts in reactive dyeing. Dye exhaustion in organic salt dyeing was similar to the values in conventional dyeing. However, dye fixations were slightly lower in organic salt dyeing than in conventional dyeing. The washing fastness of dyed fabrics with organic salt was excellent. Experimental results showed that dye exhaustion reached the maximum value when the concentration range of organic salt was from 20 g/l to 40 g/l. In addition, the optimal alkali concentration in organic salt dyeing was found to be about 30 g/l. These parameters suggested organic salt could replace inorganic salt in reactive dyeing process. 相似文献
17.
A series of monoazo disperse dyes with a photostablilizing o-hydroxycarbonyl moiety was incorporated resulted in the enhancement of the light fastness properties on polyester and nylon substrates as compared to the dyes that do not possess the photostablilizing moiety. The geometries of the azo and the hydrazone tautomeric forms of all dyes were optimized at B3LYP/6-311+G(d) and electrophilicity index was calculated for propensity of the moiety to absorb electrons. The values of absorption and stability trend of the dyes were in good agreement with the trend of experimental light fastness values. These disperse dyes possess excellent wash fastness and moderate to good sublimation fastness on hydrophobic substrates. 相似文献
18.
Temporarily solubilized azo disperse dyes based on 1,2-substituted indoles were synthesized and characterized. Dispersant-free
dyeing of polyester by using the synthesized dyes has been investigated. The colour yields of the dyes on the polyester fabric
were found to be highly dependent on the dyeing pH, optimum results being obtained at pH 5. The dyes exhibited good to excellent
fastness properties on polyester while lightfastness was moderate. 相似文献
19.
M. A. El-Borai H. F. Rizk G. B. El-Hefnawy H. F. El-Sayed S. A. Ibrahim 《Fibers and Polymers》2013,14(12):2061-2068
Three series of mono and disazo disperse dyes were synthesized from 2-amino-4-(pyridin-3-yl) thiazole. The structure of the synthesized dyes was confirmed by elemental analysis, ultraviolet-visible, infrared, proton and carbon nuclear magnetic resonance and mass spectroscopy. The dyeing parameters, perspiration, wash and light fastness of eighteen azo disperse dyes on polyester have been investigated. Application of these dyes on polyester fabric gave yellow to reddish hues for mono azo derivatives and reddish to dark brown hues for disazo derivatives with fair to moderate light fastness and moderate to good wash and perspiration fastness grade. In addition, the synthesized dyes were screened for their antimicrobial activities against some gram positive, gram negative bacteria and fungi. Some of the prepared dyes gave excellent results against most of the tested organisms. 相似文献
20.
The structures of disperse dyes and their intermolecular interactions have important impacts on dyeing and printing performances for polyester fabrics. The fluorine dyes show some unique molecular stability and photochemical properties. The dyeing property of the azo dye containing trifluoromethyl group for polyester fabrics, 4'-(N-acetoxyethyl-Nethyl)- amino-2-bromine-4-nitro-6-trifluoromethylazo- benzene (D1), was investigated and compared with the similar structure disperse dye. The results show that the high color yield and good exhaustion of the dyed PET fabrics could be obtained. The polyester fabrics dyed with D1 had excellent light fastness. Its single crystal was prepared and the supramolecular interactions were solved by X-ray diffraction. Dye D1 formed triclinic crystals in a trimeric packing mode. The C-F bond distances of CF3 are 1.2730 Å, 1.2240 Å and 1.2900 Å, respectively. The two benzene rings linked azo unit (-N=N-) are obviously twist. The dihedral angle of the two benzene rings is 50.23 o. There are six weak hydrogen bonds around trifluoromethyl group in the intramolecule and intermolecule. The excellent light stability of the dye should be attributed to its unique supramolecular structure. 相似文献