Synthesis of Malononitrile-Condensed Disperse Dyes and Application on Polyester and Nylon Fabrics

Lams, Yusuf Y.; Nkeonye, P. O.; Bello, K. A.; Yakubu, Mohammed Kabir; Lawal, A. O.

doi:10.1155/2014/460794

Cited by 7 publications

(8 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4-Dicyanovinyl-2-nitroaniline (0.7 g, 3.3 mmol) [ 50 , 51 ] was dissolved in 8 mL of acetic acid. Then, 0.7 mL (13.1 mmol) of concentrated sulfuric acid was added, following the addition of 0.22 g (3.1 mmol) of sodium nitrite in 0.5 mL water.…”

Section: Methodsmentioning

confidence: 99%

Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines

Mastnak

Lobnik

Mohr

et al. 2018

Sensors

View full text Add to dashboard Cite

The synthesis of two new azobenzene dyes, namely CR-528 and CR-555, and their spectral properties in ethanol solution are described. The recognition of sulfur-containing analytes (2-mercaptoethanol (2-ME), sodium hydrosulfide (NaHS)), and biogenic amines (spermine, spermidine, ethanolamine) bestowed significant spectral changes with color changes from pink/purple to pale yellow/orange-yellow. The nitro acceptor group in the dicyanovinyl reactive dye contributes to higher sensitivity and lower detected analyte concentrations. The absorption maxima of both the dyes are at wavelengths compatible with low-cost light sources and detectors, making them excellent candidates for optical probes that are economic, simple to use, and do not require well-trained personnel.

show abstract

Section: Methodsmentioning

confidence: 99%

Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines

Mastnak

Lobnik

Mohr

et al. 2018

Sensors

View full text Add to dashboard Cite

show abstract

“…The dye was filtered, washed with water, and recrystallized in acetone [19]. The dyes were weighed, and their percentage yields were calculated using the formula [20].…”

Section: Coupling Reactionmentioning

confidence: 99%

“…The reaction mixture was cooled, filtered, and washed with water till the filtrate was neutral. Finally, it was washed with 20 mL methanol and air-dried [14,20].…”

Section: Polycondensation Of Monomeric Dyes By Crosslinking Reactionmentioning

confidence: 99%

“…The dye bath was cooled, and the dyed fiber was thoroughly washed with hot and then cold water. Finally, the unfixed dye molecules and the dye assistants was removed by treating the fiber for 30 min at 70 ºC in a solution containing sodium hydroxide (2 g/L), sodium dithionite (2 g/L), and 0.1% dispergator [20,22].…”

Section: Dyeing Of Polyester and Nylon Using Carrier Dyeing Techniquementioning

confidence: 99%

See 1 more Smart Citation

Facile synthesis and dyeing performance of some disperse monomeric and polymeric dyes on nylon and polyester fabrics

Abdullahi¹,

Musa²,

Habibu³

et al. 2022

Bull. Chem. Soc. Eth.

View full text Add to dashboard Cite

ABSTRACT. Monoazo disperse polymeric dyes consisting of polyarylazocarboxybenzene-formaldehyde (PACB-F) and polyarylazohydroxynaphthalene-formaldehyde (PAHN-F) were synthesized through diazotisation, coupling and polycondensation reactions in the presence of formaldehyde and aqueous oxalic acid. The structure of the as synthesised dyes was acquired using UV-visible absorption maxima and FT-IR spectroscopy and their color, yield, melting point, solubility, and viscosity determined via standard methods. UV-visible and FTIR results showed successful formation of the polymeric dyes due to shift of wavelength of maximum absorption (λmax) (420-470 nm, 460-510 nm) and new absorption peak at around (2800-2995 cm-1) for methylene bridge, respectively. The yield of the monomeric dyes was 67.1-85.7% and polymeric 45.1-59.3%, melting point was 104.1-131.2 oC, and 136.0-143.5 oC, respectively. They are soluble in acetone, ethanol, and methanol and insoluble in n-hexane and water. The dyeing process was achieved via high temperature and carrier dyeing techniques on nylon and polyester fibers. The dyeing characteristics of the synthesised dyes were analyzed in comparison with commercial disperse dyes (terasil brilliant violet and terasil scarlet brown). The dyeing produced a very attractive hue brown shades with good to excellent washing, light, hot pressing, and rubbing fastness. KEY WORDS: Carbocyclic, Dyeing activity, Monoazo, Monomeric, Polymeric Bull. Chem. Soc. Ethiop. 2021, 35(3), 485-497. DOI: https://dx.doi.org/10.4314/bcse.v35i3.2

show abstract

“…In addition, because of its planar format and capability to handle several samples simultaneously, TLC is a high throughput analysis technique and can be coupled with multiple detection techniques such as IR spectroscopy, surface‐enhanced Raman spectroscopy (SERS) and MS to provide further information of the separated samples . TLC has been frequently applied in organic synthesis pharmaceutical analysis , clinical analysis , food chemistry , pesticide analysis , dye purity , plant materials and herbal analysis because of the aforementioned features.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic‐hydrophilic monolithic dual‐phase layer for two‐dimensional thin‐layer chromatography coupled with surface‐enhanced Raman spectroscopy detection

Zheng

Liu

et al. 2015

J of Separation Science

View full text Add to dashboard Cite

Hydrophobic-hydrophilic monolithic dual-phase plates have been prepared by a two-step polymerization method for two-dimensional thin-layer chromatography of low-molecular-weight compounds, namely, several dyes. The thin 200 μm poly(glycidyl methacrylate-co-ethylene dimethacrylate) layers attached to microscope glass plates were prepared using a UV-initiated polymerization method within a simple glass mold. After cutting and cleaning the specific area of the layer, the reassembled mold was filled with a polymerization mixture of butyl methacrylate and ethylene dimethacrylate and subsequently irradiated with UV light. During the second polymerization process, the former layer was protected from the UV light with a UV mask. After extracting the porogens and hydrolyzing the poly(glycidyl methacrylate-co-ethylene dimethacrylate) area, these two-dimensional layers were used to separate a mixture of dyes with great difference in their polarity using reversed-phase chromatography mode within the hydrophobic layer and then hydrophilic interaction chromatography mode along the hydrophilic area. In the latter dimension only the specific spot was developed further. Detection of the separated dyes could be achieved with surface-enhanced Raman spectroscopy.

show abstract

Synthesis of Malononitrile-Condensed Disperse Dyes and Application on Polyester and Nylon Fabrics

Cited by 7 publications

References 13 publications

Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines

Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines

Facile synthesis and dyeing performance of some disperse monomeric and polymeric dyes on nylon and polyester fabrics

Hydrophobic‐hydrophilic monolithic dual‐phase layer for two‐dimensional thin‐layer chromatography coupled with surface‐enhanced Raman spectroscopy detection

Contact Info

Product

Resources

About