Dyeing Properties of Acetylated Wood with Red Disperse Dyes

2011 ◽  
Vol 335-336 ◽  
pp. 1061-1066 ◽  
Author(s):  
Ying Zhao ◽  
Xiao Yan Tan ◽  
Xiao Qiao Wan ◽  
Wei Liu ◽  
Ze Hua Yu
Keyword(s):  
Ir Spectra ◽  
Dye Removal ◽  
Color Difference ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Color Fastness ◽  
Dyeing Properties ◽  
Excellent Color ◽  
Unmodified Wood ◽  
Modified Wood

The dyeing properties of acetylated fir powder and acetylated poplar spill with 8 red disperse dyes were studied in this paper. The dyeing results indicate that the percentage of dye exhaustion (% E)on acetylated fir powder is 96~99%. As for acetylated poplar spill, the percentage of dye exhaustion reaches 58~78%. The color shade of dyed modified wood is similar to that of dyed polyester fabric. Compared with the dyed polyester fabric, the color difference(∆E) of dyed modified wood is smaller than that of dyed unmodified wood under the same dyeing conditions. Furthermore, modified fir powder has excellent color fastness to washing, the dye removal of dyed acetylated fir powder is 0.4 ~ 1.8 % at 80°C for 2 h in the water. Both the Infrared (IR) spectra and microscopic images of fir powder, acetylated fir powder and dyed acetylated fir powder were investigated.

Dyeing Properties of Cyanoethylated Wood with Disperse Dyes

2012 ◽  
Vol 531 ◽  
pp. 308-311 ◽  
Author(s):  
Xiao Qiao Wan ◽  
Fang Zhao ◽  
Ze Hua Yu ◽  
Ying Zhao
Keyword(s):  
Electron Microscopy ◽  
Color Difference ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
High Temperature And Pressure ◽  
Ft Ir ◽  
Temperature And Pressure ◽  
Unmodified Wood ◽  
Scanning Electron ◽  
Modified Wood

The color cyanoethylated wood were preparated by means of dyeing under high temperature and pressure. The results indicates that the percentage of dye exhaustion (%E) on cyanoethylated fir powder is 95.3~98.8%. The color shade of dyed modified wood is similar to that of dyed polyester fabric. Compared with the dyed polyester fabric, the color difference (∆E) of dyed modified wood is smaller than that of dyed unmodified wood under the same dyeing condition. Unmodified fir powder, cyanoethylated fir powder and dyed cyanoethylated fir powder were characterized by Fouriertrans- form infrared (FT-IR), scanning electron microscopy (SEM).

Ultralow emission micro-printing process for PET fibers using liquid disperse dye

2021 ◽  
pp. 004051752110457
Author(s):  
Li Ai ◽  
Hongmei Cao ◽  
Yawei Zhu
Keyword(s):  
Polyester Fabric ◽  
Disperse Dyes ◽  
Disperse Dye ◽  
Color Fastness ◽  
Dye Uptake ◽  
Printing Process ◽  
Pet Fibers ◽  
Color Depth ◽  
Excellent Color ◽  
Freshwater Consumption

The commercial powder disperse dye used for printing polyester fabrics exhibits many environmentally-unfriendly properties, especially the associated high wastewater emission. In this study, three kinds of liquid disperse dyes (C.I. Disperse Blue 291:1, (L-DB); C.I. Disperse Red 179, (L-DR), and C.I. Disperse Orange 30, (L-DO)), two kinds of binders (A and/or B), and a micro-printing process, were applied to polyester fabric, with the goal of reducing freshwater consumption while maintaining color fastness. The influences of rheological and printing performance and color fastness were studied. Home-made liquid dyes of L-DB, L-DR and L-DO were found to exhibit higher color depth, excellent color fastness, and ultralow emission of wastewater and waste residual during the micro-printing process. The binder comprised of silicone-modified polyacrylate was observed to increase dye uptake, reduce dye sublimation, and improve color fastness. The liquid dyes of L-DB, L-DR and L-DO also exhibit stable and better rheological properties, which appeared to have little effect on the viscosity of printing pastes when compared with commercial powder disperse dye of Blue 3GFL (C.I. Disperse Blue 291:1), Red 2B (C.I. Disperse Red 179) and Yellow brown S-4RL (C.I. Disperse Orange 30), respectively. Results of this micro-printing process indicated that it is an environmentally clean production technology.

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

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.

A novel green continuous dyeing of polyester fabric with excellent color data

2020 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Reda M El-Shishtawy ◽  
Nahed Ahmed ◽  
Sahar Nassar ◽  
Fayza kantouch
Keyword(s):  
Polyester Fabric ◽  
Color Data ◽  
Excellent Color

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 Properties of Pinus modified with silicon–titanium binary oxides

BioResources ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 747-763
Author(s):  
Xiaoling Liu ◽  
Songwu Chen ◽  
Yunlin Fu
Keyword(s):  
Wood Surface ◽  
Color Change ◽  
Sol Gel ◽  
Resistance Testing ◽  
Chemical Bonds ◽  
Noticeable Increase ◽  
Aging Resistance ◽  
Tio2 Gel ◽  
Unmodified Wood ◽  
Modified Wood

Modification of Pinus yunnanensis using SiO2–TiO2 was carried out via the sol–gel method. The aim was to improve the hydrophobicity, aging resistance, and photocatalysis of the wood surface via the formation of new chemical bonds with penetrated SiO2 and TiO2. The air-dried P. yunnanensis wood underwent penetration, gelation, aging, and drying. The wood was exposed to high temperatures for modification, and its microstructure, composition, photodegradability, resistance to aging, dimensional stability, and hydrophobicity were then determined. The results indicated that during modification, SiO2–TiO2 gel was generated in the wood, and the content of the gel increased as penetration time was extended. No structural change in the wood was observed. Meanwhile, chemical bonds were formed among SiO2, TiO2, and wood. The contact angle of the modified wood increased noticeably relative to that of unmodified wood. This increase indicated a noticeable increase in the hydrophobicity of the wood surface. The modified wood exhibited high photocatalytic degradation; however, its durability was not evident. The water absorption and thickness swelling of the modified wood markedly increased. After ultraviolet-aging resistance testing, the color change in the surface of the modified wood was noticeably less than that of the unmodified wood.

Chemical-Free Scouring and Bleaching of Cotton Knit Fabric for Optimum Dyeing Performance

2019 ◽  
Vol 37 (4) ◽  
pp. 265-280 ◽  
Author(s):  
Md. Abdul Hannan ◽  
Papia Haque ◽  
S. M. Fijul Kabir ◽  
Mohammed Mizanur Rahman
Keyword(s):  
Color Difference ◽  
Color Measurement ◽  
Color Fastness ◽  
Green Method ◽  
Process Stage ◽  
Dyeing Performance ◽  
Acceptable Range ◽  
Knit Fabrics ◽  
Single Jersey ◽  
Infrared Data

The current work endeavored to avoid chemicals during scouring and bleaching of cotton knit fabric in order to introduce a green method. Single jersey single lacoste knit fabrics were treated in water at 105 °C, 120 °C, and 130 °C for 20, 40, and 60 min at reduced process stage. Fourier transform infrared data revealed the weakening and shifting of typical bands of wax and pectin-based cotton impurities in the region of 1,740–1,200 cm−1 for the pretreated samples at 130 °C for 20 min. Color difference (Color Measurement Committee ΔE) was found within the acceptable range for 1.5% and 1% dyed samples when treated at 105 °C for 20 min, while 0.5% dyed samples required 130 °C for 20 min to achieve the desired range. The ratings for color fastness to washing, perspiration, and rubbing were 4–5 for all the chemical-free pretreated samples. The proposed process yielded better strength and dimensional stability compared to the conventionally pretreated samples.

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