Synthesis and Characterization of Novel Azo Disperse Dyes Containing -amino Phosphonate and Their Dyeing Performance on Polyester Fabric

Hamed, Mohamed A.; Shaban, Elkhabiry; Kafafy, Hany; Gokha, Ahmed Abdel Aleem El; Sayed, Ibrahim El Tantawy El

doi:10.21608/ejchem.2017.1562.1122

Cited by 6 publications

(7 citation statements)

References 21 publications

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“…All the measurements were occurred at 625 nm wavelength. The corresponding color strength value (K/S) was evaluated by applying the KubelkaMunk equation 53 as follows where R is the decimal fraction of the reflectance of the dyed fabric, R o is the decimal fraction of the reflectance of the undyed fabric, K is the absorption coefficient, and S is the scattering coefficient. 54…”

Section: Methodsmentioning

confidence: 99%

Breathability performance of antiviral cloth masks treated with silver nanoparticles for protection against COVID-19

Hamouda

Kafafy

Mashaly

et al. 2021

Journal of Industrial Textiles

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The global widespread of coronavirus disease 2019 (COVID-19) has caused shortage of medical face masks and led to developing of various types of cloth masks with different levels of protection and comfort to meet the market demands. Breathing comfort is a significant aspect that should be considered during the design of cloth masks along with the filtration efficiency; otherwise, the wearer will feel suffocated. In this work, different types of cotton and polyester knitted fabrics blended with spandex yarns were produced and treated with silver nanoparticles to be used as antiviral cloth masks. Scanning electron microscope, transmission electron microscope, and EDX were used to characterize the silver nanoparticles (AgNPs). Antiviral activity was assessed against SARS-CoV-2 coronavirus as well. The influence of using different fabric materials, number of layers, and hybrid layers on their air permeability and breathability were investigated to evaluate the comfortability of the cloth masks. Physiological impacts of wearing the cloth masks were evaluated by measuring oxygen saturation of hemoglobin and heart rate of the wearers while doing various activities. The results indicated that AgNPs have low cytotoxicity and considerable efficiency in inhibition of SARS-CoV-2. Adding spandex yarns with different count and ratios reduced the porosity and air permeability of the fabrics. Moreover, the combination of three hybrid layers’ mask made of polyester fabric in the outer layer with 100% cotton fabric in the inner layer showed high comfortability associated with high air permeability and breathability. Also, wearing these masks while doing activities showed no significant effect on blood oxygen saturation and heart rate of the wearers.

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Section: Methodsmentioning

confidence: 99%

Breathability performance of antiviral cloth masks treated with silver nanoparticles for protection against COVID-19

Hamouda

Kafafy

Mashaly

et al. 2021

Journal of Industrial Textiles

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“…The colorimetric measurement of the dyed samples was measured using a Hunter Lab ultra Scan PRO spectrophotometer. The analogous color strength value (K/S) was assessed by applying the KubelkaMunk equation (1) as follows:

normalK / normalS = {(1 - R)}^{2} / 2R - {(1 - {normalR}_{normalo})}^{2} / {2R}_{o}

where R is the decimal fraction of the reflectance of the dyed fabric, R o is the decimal fraction of the reflectance of the undyed fabric, K is the absorption coefficient, and S is the scattering coefficient.…”

Section: Methodsmentioning

confidence: 99%

“…Azo dyes containing thiophene nucleus generally show a wide range of color, which has definite wavelength similar to aniline‐based azo dyes, and characterized by high extinction coefficient . Most of azo dyes have raised several environmental concerns owing to their wide spread, which has been enhanced due to the textile industry revolution of synthetic fibers such as polyester .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and dyeing performance of some azo thienopyridine and thienopyrimidine dyes based on wool and nylon

Regal

Rafat

El‐Sattar

2019

Journal of Heterocyclic Chem

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A string of novel heterocyclic mono azo dyes were synthesized and their utilization in dyeing different fabrics as wool and nylon were discussed. Thienopyridine azo dyes 4 and 6were prepared by reaction of chloro acetamidederivative 2 with diamino compounds to yield 3 and 5, followed by reaction with NaNO2/HCl and coupling with nucleophilic reagent. One‐pot reaction of chloro acetamide 2 with ammonium thiocyanat in solvent ethanol gave the unexpected thienopyrimidine derivative 7, which contain two active sites, the former is primary amine that was able to form diazonium salt that coupled with N,N‐dimethylaniline, resorcinol, and/or self‐coupling to afford the azo dyes 8‐10, and the latter is active methylene group that underwent coupling with different diazonium salts to give the azo thienopyrimidine derivative dye 11‐15. The dyeing performance of these azo dyes had been investigated in terms of their dyeing behavior and fastness properties on different fabrics. Results showed that the color strength (K/S) values, as well as, washing, rubbing, and resistance to acid, alkali and light showed high efficiency of these heterocyclic mono azo dyes to dye wool rather than nylon fibers.

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“…All measurements were occurred at l425 nm wavelength. The corresponding color strength value (K/S) was assessed by applying the KubelkaMunk [14] (Eq. ( 1))…”

Section: Color Measurementmentioning

confidence: 99%

Evaluation of the dyeing performance and antimicrobial activity of dyed wool fabric with new azo dyes

et al. 2021

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A series of novel mono and diazothienopyrazolone dyes were successfully synthesized and characterized, the coloration performance of the prepared dyes was assessed on wool fabrics. The structures of the synthesized dyes were characterized and confirmed by making use of IR, UV, 1HNMR and C13NMR spectrophotometers with a view to determine and confirm their chemical structure. Antimicrobial activity of the dyes fabrics has been investigated, the dyeing performance of the as prepared dyes in terms of color strength (K/S), CIE lab as well as fastness properties (washing, rubbing, perspiration and light) of the dyed wool fabrics were also investigated. The synthesized dyes exhibited high and homogeneous dyeing performance, antimicrobial activity and the fastness properties of the dyed fabrics were ranging from good to excellent.

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Synthesis and Characterization of Novel Azo Disperse Dyes Containing -amino Phosphonate and Their Dyeing Performance on Polyester Fabric

Cited by 6 publications

References 21 publications

Breathability performance of antiviral cloth masks treated with silver nanoparticles for protection against COVID-19

Breathability performance of antiviral cloth masks treated with silver nanoparticles for protection against COVID-19

Synthesis, characterization, and dyeing performance of some azo thienopyridine and thienopyrimidine dyes based on wool and nylon

Evaluation of the dyeing performance and antimicrobial activity of dyed wool fabric with new azo dyes

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