Synthesis, fastness properties, color assessment and antimicrobial activity of some azo reactive dyes having pyrazole moiety

Rizk, Hala F.; Ibrahim, Seham A.; El‐Borai, Mohamed A.

doi:10.1016/j.dyepig.2014.06.026

Cited by 75 publications

(30 citation statements)

References 14 publications

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“…Reactive dyes are well known for their ability to establish covalent bonds with cellulosic fibres . Due to the covalent bonding, these dyes show high wash and rub fastness on the fibres .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of KM‐type reactive dyes containing 2‐ethoxy‐4‐chloro‐s‐triazine

Zhang

Xiong

Zhang

et al. 2019

Coloration Technology

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A new kind of hetero‐bifunctional reactive dye containing 2‐ethoxy‐4‐chloro‐s‐triazine, with better activity matching with β‐hydroxyethyl sulphone sulphate at a low fixation temperature, was successfully synthesised and characterised. An ethoxy group was designed to be introduced into triazine to increase the substantivity and the reactivity of the dyes. Thereby, the fixation of mono‐s‐chlorotriazine/hydroxyethyl sulphone sulphate (KM‐type) bifunctional reactive dyes on cotton was improved, and dyeing under mild conditions with high fixation was realised. Nineteen dyes with orange, red and blue colours were synthesised and characterised by UV‐Vis and infrared spectroscopy and mass spectrometry. Synthesised dyes were dyed at 60, 75 and 90°C, respectively. Exhaustion and reactivity for all of the ethoxy‐containing KM‐type dyes was over 90% at the optimal temperature, and fixation was over 87%, which was higher than the ethoxy‐free comparative dyes. The optimal fixation temperature of ethoxy‐containing dyes was initially reduced to 75°C, and then to 60°C. Compared with comparative dyes, the wash fastness and light fastness were basically unchanged, and the wet rub fastness of the H‐acid series was reduced by one grade.

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“…Reactive dyes are well known for their ability to establish covalent bonds with cellulosic fibres . Due to the covalent bonding, these dyes show high wash and rub fastness on the fibres .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of KM‐type reactive dyes containing 2‐ethoxy‐4‐chloro‐s‐triazine

Zhang

Xiong

Zhang

et al. 2019

Coloration Technology

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“…Reactive dyes are the most popular and extensively used groups of dyes for dyeing purposes in different industries [1]. However, they suffer from some drawbacks such as high salt content of the wastewater, low adsorption ability, non-biodegradability, high water solubility and low degree of fixation on the surfaces which result in the generation of high contaminated wastewater [2].…”

Section: Introductionmentioning

confidence: 99%

Enhancing reactive blue 4 adsorption through chemical modification of chitosan with hexadecylamine and 3-aminopropyl triethoxysilane

Vakili

Rafatullah

Ibrahim

et al. 2017

Journal of Water Process Engineering

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“…However, cotton textiles provide an excellent environment for microorganism growth, which leads to cellulose biodegradation and can cause functional, aesthetic and health-related problems. In addition to synthetic antimicrobial agents, special dyes and metal nanoparticles can be used for achieving antimicrobial efficiency of cotton Rizk et al 2015). Silver (Ag) is known for its broadspectrum of antimicrobial activity against bacteria, fungi and viruses (De Gusseme et al 2010;Feng et al 2000;Franci et al 2015;Sun et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Durable antibacterial and UV protective properties of cellulose fabric functionalized with Ag/TiO2 nanocomposite during dyeing with reactive dyes

Gorjanc

Šala

2016

Cellulose

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The cellulose fabrics made from 100 % cotton with antibacterial and UV protective properties were successfully created by loading of Ag/TiO 2 nanocomposite during and after dyeing with yellow, red and blue reactive dye. Blank dyeing (dyeing with all chemicals except dye) was performed to show that reactive dyes have an ability to increase the adsorption and adhesion of Ag/TiO 2 nanocomposite on cotton fabrics. The colour of the samples before and after washing and exposure to artificial light was measured by reflectance spectroscopy. The presence of nanocomposite on samples was confirmed by scanning electron microscope. The increased adsorption capacity of cotton towards Ag/TiO 2 nanocomposite due to the presence of reactive dyes was confirmed by measuring the quantity of silver using inductively coupled plasma mass spectroscopy. The same samples showed excellent UV protective properties with UV protection factor (UPF 50?), and excellent antibacterial properties against E. coli and S. aureus. Due to a good adhesion of nanocomposite on samples where loading of nanocomposite and dyeing with reactive dye was performed simultaneously, the samples retained their excellent protective properties after repetitive washing cycles.

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Synthesis, fastness properties, color assessment and antimicrobial activity of some azo reactive dyes having pyrazole moiety

Cited by 75 publications

References 14 publications

Synthesis and application of KM‐type reactive dyes containing 2‐ethoxy‐4‐chloro‐s‐triazine

Synthesis and application of KM‐type reactive dyes containing 2‐ethoxy‐4‐chloro‐s‐triazine

Enhancing reactive blue 4 adsorption through chemical modification of chitosan with hexadecylamine and 3-aminopropyl triethoxysilane

Durable antibacterial and UV protective properties of cellulose fabric functionalized with Ag/TiO2 nanocomposite during dyeing with reactive dyes

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