Alkali-Stable Solid State Fluorescent Pyrazolo/Pyrrolinone Disperse Dyes: Synthesis and Application for Dyeing Polyester Fabric

2021 ◽  
pp. 131623
Author(s):  
Tarek Aysha ◽  
Mostafa Zain ◽  
Mohamed Arief ◽  
Yehya Youssef
Keyword(s):  
Solid State ◽  
Polyester Fabric ◽  
Disperse Dyes

scholarly journals Synthetic utility of 5-amino-6-cyano-2-phenylthieno[2,3-d] oxazole

2005 ◽  
Vol 70 (11) ◽  
pp. 1249-1253 ◽  
Author(s):  
V.R. Kanetkar ◽  
R.R. Walavalkar
Keyword(s):  
Ir Spectroscopy ◽  
Absorption Spectra ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Visible Absorption ◽  
Synthetic Utility ◽  
Azo Disperse Dyes

This paper describes the synthesis of 5-amino-6-cyano-2-phenylthieno[ 2,3-d]oxazole and its utilization for the preparation of a range of azo disperse dyes. These aryl azo disperse dyes were applied on polyester fabric and their fastness properties were evaluated. The dyes were characterized by NMR and IR spectroscopy. The visible absorption spectra of these dyes were Recorded.

scholarly journals Dyeing of Polyester Fabric with Natural Colorants Extracted from Mahogany (Swieteniamahagoni) Seed Pods

2020 ◽  
Vol 11 (1) ◽  
pp. 37-42
Author(s):  
Md Abdullah Al Mamun ◽  
Mohammad Mamun Hossain ◽  
Mubarak Ahmad Khan
Keyword(s):  
Crude Extract ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Color Fastness ◽  
Color Strength ◽  
Uv And Ir Spectra ◽  
Natural Colorants ◽  
Dyeing Method ◽  
Exhaust Dyeing ◽  
Dyed Fabric

Polyester fabric is usually dyed with disperse dyes which has severe limitations specially toxicity and environmental issues. The aim of the present research is to introduce an ecofriendly dyeing process for polyester fabric with natural dyes. The natural colorants were extracted from mahogany seed pods using the simple acid boiling method. The spectroscopic analysis of the crude extract was carried out by UV and IR spectra of the extracted dyes and illuminated the presence of natural tannins as coloring materials in the crude extract. 10g fabric was dyed in 200cc extracted solution at 130⁰C for 60 minutes in exhaust dyeing method followed by neutralization and soaping. Finally, a light brown dyed fabric was obtained. The dyed fabric exhibited color strength in terms of k/s value of 0.63 (λmax 360nm), lightness of 80.565 and chromaticity value of 12.002 CIE units. Different samples were dyed by fluctuating the dyeing period. The dyeing traits of the dyed materials were judged in terms of their color strength and fatness properties. All testes were carried out following the ISO standards. From the results, it is lucid that the dyed fabric showed acceptable color fastness properties in case of all fastness except color fastness to light. It is observed that dyeing time had profound influence on the color strength (k/s value) of the dyed material. The k/s value increases with the increase of dyeing period up to 120 minutes. The maximum color strength (0.76) was noted for the fabric. The shorter dyeing time produces lighter samples and the longer dyeing time produced colorful samples. Journal of Engineering Science 11(1), 2020, 37-42

Effects of Disperse Dyes on Dyeing of Ethylated Chinese Fir Powder

2013 ◽  
Vol 788 ◽  
pp. 241-245 ◽  
Author(s):  
Ze Hua Yu ◽  
Jing Fang Tang ◽  
Xiao Qiao Wan ◽  
Xiu Chen ◽  
Wei Liu ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Smooth Surface ◽  
Ph Value ◽  
Polyester Fabric ◽  
Chinese Fir ◽  
Disperse Dyes ◽  
Wash Fastness ◽  
Ft Ir ◽  
Reflection Of Light

The dyeing properties of ethylated Chinese fir powder with disperse dyes under high temperature and high pressure were investigated in this paper, the dyeing results indicated that the color shade of dyed ethylated fir is similar to that of dyed polyester fabric while PH value of dyeing solution is between 4~5, and the dyed sample is of a good wash fastness. At the same time, the characteristics of the samples were analyzed by FT-IR and SEM, it indicated that dyes molecules were adsorbed on the surface and went into the microporous of ethylated fir powder, so that brighter color were observed due to the fact that the ethylated fir powder leads to a smooth surface which being favorable for the reflection of light.

scholarly journals Synthesis of Some Azo Disperse Dyes from 1-Substituted 2-Hydroxy-6-pyridone Derivatives and Their Colour Assessment on Polyester Fabric

2012 ◽  
Vol 02 (01) ◽  
pp. 54-59 ◽  
Author(s):  
Kurenkaka Johnson Sakoma ◽  
Kasali Ademola Bello ◽  
Mohammed Kabir Yakubu
Keyword(s):  
Polyester Fabric ◽  
Disperse Dyes ◽  
Azo Disperse Dyes

scholarly journals Nano TiO2 Imparting Multifunctional Performance on Dyed Polyester Fabrics with some Disperse Dyes Using High Temperature Dyeing as an Environmentally Benign Method

2020 ◽  
Vol 17 (4) ◽  
pp. 1377 ◽  
Author(s):  
Alya M. Al-Etaibi ◽  
Morsy Ahmed El-Apasery
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Value Added ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Blue Dye ◽  
Color Strength ◽  
Polyester Fabrics ◽  
Self Cleaning ◽  
Dyeing Method

Polyester fabrics were dyed with prepared disperse dyes using the high temperature dyeing method. The dye exhaustion of the dye baths were compared to the low-temperature dyeing method in an attempt to study the proportion of the dye effluent solution that affects the environment. The dye uptake of the high temperature dyeing method (HT) of polyester fabric was compared with low temperature dyeing, hence (HT) increased the color strength of the investigated dyes by 309 and 265%. This means that the amount of dye present in the dye effluents by using the high-temperature dyeing method is almost non-existent, and this is reflected positively on the environment as these wastes pollute the environment. Post-treated polyester fabric was prepared through a two-step hot process after being immersed in a solution of Titanium (IV) oxide nanoparticle sizeTiO2 NPs (21 nm primary particle size) at 80 °C followed by curing at 140 °C. The treated fabric realized an optimum UV protection factor of 34.9 and 283.6 degrees. These fabrics also demonstrated a strong ability to improve the light fastness properties. Finally, the potential applications of such value-added fabrics as self-cleaning and antifungal activities were investigated. The results indicated that the treated dyed fabrics with TiO2 NPs endowed fabrics with the excellent self-cleaning of methylene blue dye. From the above, the treated fabrics with nano-titanium dioxide can be used in some promising fields, for example, medical ones.

Photocatalytic Clearing of Disperse Dyed Polyester

2019 ◽  
Vol 6 (5) ◽  
pp. 10-15 ◽  
Author(s):  
Semiha Eren
Keyword(s):  
Hydrogen Peroxide ◽  
Uv Irradiation ◽  
Room Temperature ◽  
Color Difference ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Wash Fastness ◽  
Ph Values ◽  
Thiourea Dioxide ◽  
Color Differences

Trials were conducted to examine the efficiency of photocatalytic afterclearing on disperse dyed polyester. The photocatalytic afterclearing was performed by ultraviolet (UV) irradiation and hydrogen peroxide (H2O2). Polyester fabric samples were dyed with three disperse dyes at 4% depth of shade, individually. The control afterclearing treatment was a conventional reductive clearing by thiourea dioxide and caustic soda. The H2O2 impregnated samples, using various concentrations of H2O2 at various pH values, were treated under 254 nm UV irradiation (5, 10, 20, and 30 min) at room temperature. Color, color difference, wash fastness, and tensile strength values of the samples were compared. Photocatalytic clearing of disperse dyed polyester was successful in giving comparable wash fastness results as compared to conventional reduction clearing without significant color differences.

Modification of Polyester Textiles for Easier Dyeing with Disperse Dyes

2020 ◽  
Vol 7 (5) ◽  
pp. 9-16
Author(s):  
Marija Kodric ◽  
Dragan Djordjevic
Keyword(s):  
Differential Scanning Calorimetry ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Disperse Dye ◽  
Primary Alcohols ◽  
Scanning Calorimetry ◽  
Absorption Properties ◽  
Fiber Modification ◽  
Polyester Fibers ◽  
Polyester Dyeing

Modification of polyester fibers for more economical dyeing at lower temperatures without a carrier are considered in this study. Polyester dyeing is carried out industrially under rigorous conditions at high temperatures and under increased air pressure, and are treated with various solvents (primary alcohols) to make the fibers more permeable. As a result, the sorption properties, as well as the disperse dye dyeing ability, are improved. Dyeing of a modified polyester fabric at lower temperatures yielded better results than the standard dyeing of the unmodified polyester under the same conditions. The effects of fiber modification were analyzed through water absorption properties, wetting, swelling, differential scanning calorimetry (DSC), and Fourier transform infrared (FTIR) methods, and the degree of dyeing of the fabric was evaluated using CIELab parameters.

Synthesis of N-substituted arylhydrazones: applying to polyester fabric as disperse dyes

2017 ◽  
Vol 46 (6) ◽  
pp. 449-457 ◽  
Author(s):  
Abdel-Zaher A. Elassar ◽  
Saleh M. Al-Mousawi ◽  
Maher Helmi Helal ◽  
Mohamed E. Elgazzar
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Polyester Fabric ◽  
Proton Nuclear Magnetic Resonance ◽  
Disperse Dyes ◽  
Polyester Fabrics ◽  
Content Type ◽  
Temperature Method ◽  
Synthetic Reaction ◽  
Nuclear Magnetic

Purpose The purpose of this paper is to prepare new disperse dyes and apply for dying polyester fabrics. Design/methodology/approach The synthetic reaction was carried out through two steps: preparation of arylhydrazones and alkylation using enaminone and dimethylaminovinyl-pyridazine. The high temperature method was used to apply these dyes to polyester fibres. Findings The study revealed that there is a significant effect of the new prepared disperse dyes on polyester fabrics. The structures of the prepared dyes were established based on elemental analysis and spectral data (infra red (IR), mass spectrometry (MS) and proton nuclear magnetic resonance (1H-NMR), carbon 13th nuclear magnetic resonance (13C-NMR)). Research limitations/implications Disperse dyes containing heterocyclic moiety have attracted great academic and industrial attention owing to their significant. The potential of using disperse dyes easily prepared from arylhydrazones are promise broad applications for these dyes. Practical implications The presence of N-thienyl and N-pyridazinyl in the structure of the synthesised disperse dyes would be expected to add the bioactivity advantage. Also, it can be used in formulating the antimicrobial fabrics. Social implications The N-thienyl and N-pyrdiazinyl derivatives of azo dyes are expected to be superior to in the application for fabrics. It may be useful for other applications like painting. Originality/value This paper helps to synthesise novel thiophene or pyridazine-based dyestuff for application in dying properties on polyester fabric and study their fastness properties.

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