Design, synthesis of new magenta dyestuffs based on thiazole azomethine disperse reactive dyes with antibacterial potential on both dyes and gamma-irradiated dyed fabric

2021 ◽  
pp. 109504
Author(s):  
Seham A. Ibrahim ◽  
Hala F. Rizk ◽  
Dina S. Aboul-Magd ◽  
Ahmed Ragab
Keyword(s):  
Reactive Dyes ◽  
Design Synthesis ◽  
Gamma Irradiated ◽  
Dyed Fabric ◽  
Antibacterial Potential

Enhancing Dye-ability and Antibacterial Features of Silk through Pre-treatment with Chitosan

2013 ◽  
Vol 8 (3) ◽  
pp. 155892501300800 ◽  
Author(s):  
Mehrsa Hosseini ◽  
Majid Montazer ◽  
Rogheih Damerchely
Keyword(s):  
Antibacterial Properties ◽  
Reactive Dyes ◽  
Color Difference ◽  
Reactive Dye ◽  
Light Fastness ◽  
Chitosan Concentration ◽  
Washing Durability ◽  
Color Yield ◽  
Pre Treatment ◽  
Antibacterial Potential

Biopolymers are suitable replacement materials for different chemical processes. In this work, silk yarns were treated with different chitosan concentration and then dyed with mono and bi-functional reactive dyes. The color yield, color difference and color fastness to light and washing of the dyed silk yarns were evaluated. Also, the effects of chitosan concentration, type of the reactive dyes on dye uptake of samples were studied. The bi-functional reactive dye has a high adsorption compared to mono-functional ones. The silk yarn treated with 3% chitosan had higher K/S values, washing and light fastness. The effects of chitosan on the antibacterial properties of silk yarns against two kinds of bacteria: Staphylococcus aureus and Escherichia coli were investigated. The treated silk samples were found to have antibacterial potential due to the antibacterial property of chitosan. Scanning electron microscopy (SEM) photographs reveal the deposition of chitosan on the treated yarns. Washing durability, handle properties, and yellowness of treated and dyed samples were also investigated.

scholarly journals Comparative study between two types of electrolyte used in the reactive dyeing of cotton

2019 ◽  
Vol 70 (01) ◽  
pp. 30-36
Author(s):  
BAFFOUN AYDA
Keyword(s):  
Diffusion Coefficient ◽  
Sodium Chloride ◽  
Comparative Study ◽  
Salt Concentration ◽  
Sodium Sulfate ◽  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Reactive Dyeing ◽  
Factors Affecting ◽  
Dyed Fabric

The aim of this paper was to compare the efficiency of two type of electrolyte in the dyeing of cotton fabrics with reactive dyes. Factors affecting dye ability such as salt concentration, and fastness performances such as alkaliconcentrationwere studied. The colouryield K/S and colour fastness of the dyed fabric using sodium sulfate were comparable to those obtained with sodium chloride. However, the exhaustion and the fixation timewere shorter and the diffusion coefficient was lower in the case of sodium sulfate.

scholarly journals Design, synthesis and antibacterial potential of 5-(benzo[d][1,3]dioxol-5-yl)-3-tert-butyl-1-substituted-4,5-dihydropyrazoles

2015 ◽  
Vol 23 (2) ◽  
pp. 202-209 ◽  
Author(s):  
Mohammed F. El-Behairy ◽  
Tarek E. Mazeed ◽  
Aida A. El-Azzouny ◽  
Mohamed N. Aboul-Enein
Keyword(s):  
Design Synthesis ◽  
Tert Butyl ◽  
Antibacterial Potential

Design, synthesis and in vitro evaluation of anticancer and antibacterial potential of surface modified Tb(OH)3@SiO2core–shell nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (22) ◽  
pp. 18667-18677 ◽  
Author(s):  
Shahanavaj Khan ◽  
Anees A. Ansari ◽  
Abdul Arif Khan ◽  
Wael Al-Kattan ◽  
Omar Al-Obeed ◽  
...  
Keyword(s):  
Silica Layer ◽  
Shell Nanoparticles ◽  
Design Synthesis ◽  
In Vitro Evaluation ◽  
Surface Modified ◽  
Antibacterial Potential

In the current study, we modified the surface of Tb(OH)3nanoparticles with a silica layer to enhance their solubility and biocompatibility.

Design, Synthesis, Antibacterial Potential, and Structural Characterization of N-Acylated Derivatives of the Human Autophagy 16 Polypeptide

2019 ◽  
Vol 30 (7) ◽  
pp. 1998-2010 ◽  
Author(s):  
Kyriakos Gabriel Varnava ◽  
Sk. Abdul Mohid ◽  
Paolo Calligari ◽  
Lorenzo Stella ◽  
Jóhannes Reynison ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Design Synthesis ◽  
Derivatives Of ◽  
Antibacterial Potential

Researches on the Fixation Performance of Chitosan and its Derivative

2012 ◽  
Vol 535-537 ◽  
pp. 1547-1551
Author(s):  
Ning Ning Lei ◽  
Na Zhong ◽  
Yi Dong Shi ◽  
Xiao Rui Ling
Keyword(s):  
Molecular Weight ◽  
Infrared Spectrum ◽  
High Molecular Weight ◽  
Reactive Dyes ◽  
Cross Linking ◽  
Low Molecular Weight ◽  
Chitosan Hydrochloride ◽  
Dyed Fabrics ◽  
Dyed Fabric ◽  
Different Molecular Weight

The fixing performance of chitosan hydrochloride (CSH) with different molecular weight and chitosan biguanide hydrochloride (CSGH) as a fixing agent for cotton fabric dyed with reactive dyes was discussed. The results showed that the fixing effects of CSH on reactive dyes were related to its molecular weight, and the CSH with high molecular weight (HMW) exhibited better fixing effects than that with low molecular weight (LMW). The fixing effects of CSGH on reactive dyes were superior to that of the CSH with HMW, because of the CSGH molecule with positive charges and the imino groups, which could further strengthened the interaction among the CSGH, dyes and cellulose molecules. After treated by the CSGH, the soaping, perspiration and dry rubbing fastness of the dyed fabrics could be increased 0.5 to 1 grade, while the wet rubbing fastness of ones was also improved obviously. The infrared spectrum (FTIR) of the dyed fabric treated by CSGH showed that a cross-linking was formed among CSGH, dyes and cellulose molecules.

scholarly journals Hetero-functional azo reactive dyes applied on cellulosic fabric and dyeing conditions optimization to enhance the dyeing properties

2021 ◽  
Vol 16 ◽  
pp. 155892502199671
Author(s):  
Umme Habibah Siddiqua ◽  
Shaukat Ali ◽  
Shazia Muzaffar ◽  
Zinayyera Subhani ◽  
Munawar Iqbal ◽  
...  
Keyword(s):  
Textile Industry ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Alkali Concentration ◽  
Process Variables ◽  
Statistical Tool ◽  
Dyeing Properties ◽  
Dyeing Parameters ◽  
Cellulosic Fabric ◽  
Dyed Fabric

New dyestuff moieties are introduced in the textile industry to upgrade the quality and aesthetic properties of dyed fabric. To contribute to this research endeavor, the current project was conducted for the dyeing of cellulosic fabric via new hetero-functional reactive dyes R1 and R2 synthesized in our previous study. Optimization of different process variables (temperature, salt, and alkali concentration) and their interactive study for exhaust dyeing was explored and delineated based on a statistical tool response surface methodology. Results divulged that both dyes displayed maximum exhaustion and fixation at a temperature of 61.50°C on the cellulosic fabric. Reactive dye R1 exhibited 87.62 (±3) exhaustion and 82.85 (±3) fixation percentage at their optimum salt (29.07 g/L) and alkali (32.55 g/L) dosage while R2 displayed 81.50 (±3) exhaustion and 77.21 (±3) fixation at its optimized salt (32.55 g/L) and alkali concentrations (22.84 g/L). All process variables showed a positive and synergistic effect on the dyeing properties. Enhanced exhaustion and fixation percentage of R1 as compared to R2 may be accredited to greater planarity and less steric hindrance of R1. Both dyes presented superb color buildup showing good to excellent color fastness on cotton fabric. Future perspectives of the current study comprised the application and assessment of dyeing parameters of these new reactive dyes on polyester cotton (PC) fabric.

scholarly journals Design, synthesis, molecular properties and in vitro antioxidant and antibacterial potential of novel enantiopure isoxazolidine derivatives

2020 ◽  
Vol 13 (1) ◽  
pp. 2121-2131 ◽  
Author(s):  
Siwar Ghannay ◽  
Sana Bakari ◽  
Moncef Msaddek ◽  
Sébastien Vidal ◽  
Adel Kadri ◽  
...  
Keyword(s):  
Molecular Properties ◽  
Design Synthesis ◽  
Antibacterial Potential

Application of K/S Value in Determination of Fixation Rate

2014 ◽  
Vol 1048 ◽  
pp. 116-119 ◽  
Author(s):  
Hai Yan Zhang
Keyword(s):  
Linear Relationship ◽  
Cotton Fabric ◽  
Reactive Dyes ◽  
Surface Measurement ◽  
Fixation Rate ◽  
Washing Method ◽  
Dyed Fabric ◽  
Fabric Surface ◽  
The Relationship

K/S value is an important parameter of modern colorimetry, which can indicate the depth of the color of dyed fabric surface. Measurement of K/S value is easily and simple operation in the applied engineering. Take Reactive Blue B-2GLN as examples in this paper, the relationship between K/S value and the fixing rate with the reactive dyes on cotton fabric was studied. And the feasibility of K/S value instead of the traditional washing method for the determination of reactive dyes fixation rate was also studied. The results show that: the K/S value of the fabric has good linear relationship to the reactive dyes fixation rate by the washing method and the reactive dyes fixation rate can be get from the K/S correction value.

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