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.

The effect of domestic laundry detergents on the light fastness of certain reactive dyes on 100% cotton

2018 ◽  
Vol 89 (6) ◽  
pp. 1105-1112 ◽  
Author(s):  
Stanley MacArthur Fergusson ◽  
Rajiv Padhye
Keyword(s):  
Ultraviolet Radiation ◽  
Light Source ◽  
Cotton Fabric ◽  
Reactive Dyes ◽  
Color Difference ◽  
Sodium Perborate ◽  
Light Fastness ◽  
Laundry Detergents ◽  
Hydrolysis Of ◽  
H 20

This study presents findings on the effect of several domestic laundry detergents on the fastness to light of selected fiber reactive dyes applied to cotton. Cotton fabric dyed with commonly used reactive dyes were laundered with water only, several domestic detergents, and a laboratory-formulated neutral detergent, and then exposed to light for 2 h in the wet state. Exposures were repeated 15 times, equivalent to 30 h of exposure. Color loss and color difference were measured after 5, 10, and 15 wash cycles, and 10 h, 20 h, and 30 h of exposure. When the fabric was exposed to light wet, the color faded more rapidly than when it was exposed dry. The presence of an oxidizing bleach (sodium perborate or sodium percarbonate) in the detergent increased color loss during washing and wet exposure to light. Ultraviolet radiation from the light source, heat, moisture, alkali, and oxidizing bleach during exposure resulted in hydrolysis of the dye–fiber bond, causing dye desorption during washing and rinsing. The combination of ultraviolet radiation and oxidizing bleaches altered the chemistry of the dye and hence its shade. This was particularly evident on the black dye and one of the navy blue dyes.

Application of Poly2-Methyl Acrylate-N-Methyl Pyridinium Iodide in Salt-Free Dyeing of Reactive Dyes

2013 ◽  
Vol 821-822 ◽  
pp. 547-551
Author(s):  
Shu Hang Zhang ◽  
Hong Wei Li ◽  
Le Lv
Keyword(s):  
Methyl Acrylate ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Cotton Fabrics ◽  
Color Fastness ◽  
Dyeing Process ◽  
Golden Yellow ◽  
Color Yield ◽  
Matching Performance ◽  
Cationic Cotton

Poly2-methyl acrylate-N-methyl pyridinium iodide (PMAMPI) was used as a new cationic agent to pretreat cotton with dip-pad-bake method. The pretreated cationic cotton showed electropositive in the process of dyeing with reactive dye. The thesis has studied the optimized process for salt-free dyeing conditions. In the optimized salt-free dyeing process, the cotton fabrics treated with PMAMPI showed a good performance compared to those in the process of traditional salt dyeing. The results showed that color yield and color fastness of the reactive dyes on the cationic cotton were satisfied. The three dyes with best color matching performance include reactive dark red WGE, reactive navy blue WTE and reactive golden yellow WRE.

Using an N-vinylpyrrolidone co-polymer in reactive dye printing as an alternative to urea

2021 ◽  
pp. 004051752098751
Author(s):  
Jie Min ◽  
Meng-ru Ding ◽  
Jin-xin He
Keyword(s):  
Molecular Weight ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Water Soluble ◽  
Low Molecular Weight ◽  
Color Fastness ◽  
Printing And Dyeing Wastewater ◽  
Color Yield ◽  
Suitable Amount ◽  
Better Than

A series of water-soluble co-polymer (NS) from N-vinylpyrrolidone (NVP) and sodium p-styrenesulfonate (SSS) with a low molecular weight are synthesized as substitutes for urea in the reactive printing of cotton fabrics. The effects of the monomer ratio of NVP to SSS on the color yield of the printed fabrics, the color fastness, and the solubility of the reactive dyes were investigated. The possibility of using a flocculation treatment for printing wastewater was also evaluated. When the dosage of NS-02 (NVP:SSS=7:3) in the printing paste is 1.0 wt%, the color yield and the color fastness of the printed fabric are equivalent to or better than those obtained with 3.0 wt% urea. Compared with the traditional reactive printing with urea, the total nitrogen content in the wastewater after NS-02 is reduced to 15% of that using urea when treated with a suitable amount of inorganic flocculants. It meets the national discharge requirements for printing and dyeing wastewater. The study shows that a low-molecular-weight co-polymer (NS-02) has a high potential to replace urea for the printing of cotton fabric with reactive dyes.

Effects of the Cotton Fabric Pretreatment on Application Properties of Digital Inkjet Printing with Reactive Dyes

2011 ◽  
Vol 331 ◽  
pp. 398-401 ◽  
Author(s):  
Qian Zhu ◽  
Jian Da Cao ◽  
Wang Wei ◽  
Jing Cheng Zhong ◽  
Jia Yao ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Inkjet Printing ◽  
Reactive Dye ◽  
Cotton Fabrics ◽  
Color Fastness ◽  
Light Fastness ◽  
Ink Jet ◽  
Color Yield ◽  
Mass Fractions ◽  
Jet Printing

Cotton fabric was directly inkjet printed with reactive dye ink, the ink would appear on the permeability of the fabric, the depth of color yield is low, light fastness is poor. Pretreatment agents with different mass fractions had been used to do the pretreatment of the cotton fabric before ink-jet printing, the results showed that: when the concentration of alginate ester or seaweed was between 1.0% -1.5%, the fabrics had the high color yield and the fixation color rate of the dye was the highest. When the amount of NaHCO3 was 3%, the inkjet printing effect of cotton fabrics was the best; color fastness of colors was all good. After Inkjet printing, the best effect can be achieved by steaming the cotton fabrics under the 100 °Csaturated water vapor for 25min: the colors of black, red and yellow of the K / S value were of the maximum, color fastness was fine.

Rheological studies of mineral clay and its application in reactive dye printing of cotton

2017 ◽  
Vol 88 (6) ◽  
pp. 614-620 ◽  
Author(s):  
Jiamin Huang ◽  
Lili Wang ◽  
Tao Li ◽  
Jianzhong Shao
Keyword(s):  
Shear Stress ◽  
Rheological Properties ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Viscoplastic Fluid ◽  
High Shear ◽  
High Shear Stress ◽  
Color Yield ◽  
Linear Viscoelastic ◽  
Initial Viscosity

We studied the rheological properties of mineral clay (OMC) and sodium alginate (SA) pastes using steady shear, dynamic oscillatory, and transient tests. The results showed that OMC was a viscoplastic fluid and had more obvious shear-thinning features than SA, which fitted well to the Herschel–Bulkley model. Under strain, OMC and SA exhibited elastic and viscous behavior, respectively, within the linear viscoelastic region. The viscosity of OMC returned to >60% of the initial viscosity after the removal of the high shear stress. In printing experiments, the color yield and penetration of OMC surpassed that of SA and offered excellent outline sharpness, suggesting that it has the potential to be used as a thickener for reactive dyes in cotton printing.

Study on Preparation and Property of Regenerated Liquid Reactive Dyes Regenerated Magenta

2014 ◽  
Vol 941-944 ◽  
pp. 445-449
Author(s):  
Hong Lin Yang ◽  
Wei Xiang ◽  
Guang Jie Chen
Keyword(s):  
Surface Tension ◽  
Inkjet Printing ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Deionized Water ◽  
Particle Sizes

The regenerated liquid reactive dye Regenerated Magenta had been prepared with the waste reactive ink of Jettex R Magenta in the process of digital inkjet printing. The effects of quality percentage of waste ink, cosolvent, pH regulator on the stabilities of Regenerated Magenta had been investigated. The results show that the Regenerated Magenta ink prepared with waste ink 26%, N-methyl-2-pyrrolidone 4%, THAM 1%, ethanediol 3% and deionized water 67% has good performances such as particle sizes, surface tension, viscosity and conductivity. The characteristics of Regenerated Magenta ink meet the demands of the ink for digital inkjet printing.

scholarly journals Application of Natural Flavonoids to Impart Antioxidant and Antibacterial Activities to Polyamide Fiber for Health Care Applications

Antioxidants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 301 ◽  
Author(s):  
Ya-Dong Li ◽  
Jin-Ping Guan ◽  
Ren-Cheng Tang ◽  
Yi-Fan Qiao
Keyword(s):  
Health Care ◽  
Antibacterial Properties ◽  
Antibacterial Activities ◽  
Order Kinetic ◽  
Adsorption Model ◽  
Chemical Structures ◽  
Functional Textiles ◽  
Washing Durability ◽  
Polyamide Fiber ◽  
Adsorption Capability

Polyamide fiber has the requirements for antioxidant and antibacterial properties when applied to produce functional textiles for heath care purposes. In this work, three natural flavonoids (baicalin, quercetin, and rutin) were used to simultaneously impart antioxidant and antibacterial functions to polyamide fiber using an adsorption technology. The relations of the chemical structures of flavonoids with their adsorption capability, adsorption mechanisms, and antioxidant and antibacterial activities were discussed. The Langmuir–Nernst adsorption model fitted the adsorption isotherms of the three flavonoids well. The adsorption kinetics of the three flavonoids conformed to the pseudo second-order kinetic model. Quercetin exhibited the highest affinity and adsorption capability, and imparted the highest antioxidant and antibacterial activities to polyamide fiber; and moreover, its antioxidant and antibacterial functions had good washing durability. This study demonstrates that the treatment using natural flavonoids is an effective way to exhance the health care functions of polyamide fiber.

scholarly journals Dyeing Method and Properties of a Novel Blue Azo-Anthraquinone Reactive Dye on Cotton

Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1334 ◽  
Author(s):  
Bin Shan ◽  
Wei Xiong ◽  
Shufen Zhang
Keyword(s):  
Sodium Carbonate ◽  
Reactive Dye ◽  
Light Fastness ◽  
Colored Cotton ◽  
Dyeing Method ◽  
Dipping Time

A novel blue azo-anthraquinone reactive dye was evaluated in the dyeing of cotton by using a dip–pad–steam process. Dyeing method and properties were examined in detail and the results showed that the dyeing method consisting of dye concentration of 25 g/L, sodium carbonate of 12 g/L, dipping time of 3 min and steaming time of 30 min was the most effective when a conventional “one-dip–one-nip” process was used. The fixation of the dyes on cotton could reach up to 93.4%, the wash and rub fastness both reached grade 4 above, and the light fastness reached grade 4–5 above. Such colored cotton showed very close colorimetric properties.

Improvement of Light Fastness of Liyuan Blue FL-RN Reactive Dye

2015 ◽  
Vol 1120-1121 ◽  
pp. 198-202
Author(s):  
Zahid Latif ◽  
Fan Liu ◽  
Lin Wei He ◽  
Ying Jie Cai
Keyword(s):  
Cotton Fabric ◽  
Reactive Dye ◽  
International Standards ◽  
Light Fastness ◽  
Uv Absorber ◽  
Fastness Property ◽  
Dyed Fabrics ◽  
Color Depth ◽  
Light Medium

Cotton fabric was dyed with Liyuan Blue FL-RN reactive dye. The dye exhaustion and fixation percentages were calculated for all light, medium and dark shades. The dye shows very good exhaustion and fixation properties. Dyed samples were tested for light fastness property as per international standards. The results indicates the dye has a good light fastness property. The effect of UV absorber was studied in order to improve light fastness property. Cationic UV absorber CANFIX SUN was applied on the dyed cotton fabric by exhaust method. The results show that the color depth was similar after UV absorber treatment. In all the cases the use of UV absorber improved the light fastness of dyed fabrics as compared to untreated dyed samples.

scholarly journals Dyeing of Polyester with Reactive Dyestuffs Using Nano-Chitosan

2018 ◽  
Vol 13 (2) ◽  
pp. 155892501801300
Author(s):  
Neda Najafzadeh ◽  
Sima Habibi ◽  
Mohammadreza A. Ghasri
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Morphology ◽  
Reactive Dyes ◽  
Color Difference ◽  
Polyester Fabric ◽  
Surface Chemical ◽  
Bending Resistance ◽  
Bending Behavior ◽  
Scanning Electron

The main objective of this work is to investigate the effect of nano-chitosan on the dyeing of polyester fabric with reactive dyes. Polyester fabric was treated with alkali and coated with nano-chitosan. Afterwards all samples were dyed with reactive dyes. The water absorption and bending resistance of pristine polyester, alkaline and chitosan-treated polyester were measured. In order to investigate surface chemical bonding, FTIR/ATR was employed. Surface morphology of fabrics was observed using scanning electron microscopy (SEM). Wettability and bending behavior of the treated polyester increased compared to the untreated one. The color difference between the dyed blank and chitosan-treated samples was estimated using a spectrophotometer. The data obtained shows it is possible to use reactive dyes to dye polyester fabrics finished with nano-chitosan and the resulting fabrics will exhibit acceptable washing and rubbing fastness.

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