Nano-Silica Based Sol-Gel Coating of Direct Dyed Cotton Fabric to Improve the Colorfastness Properties

2012 ◽  
Vol 538-541 ◽  
pp. 2251-2255
Author(s):  
Sidra Saleemi ◽  
Nadir Ali Rind

This research was aimed to achieve the better washing fastness of direct dyes using sol-gel after treatment. Early work indicates that the after treatments used to improve the wash fastness were affect the hue, rubbing and light fastness of direct dye and were environmentally hazardous because of containing formaldehyde and copper salts. The present process consists of simple pad-dry-cure method which is optimized. The prime focus of using sol-gel after-treatment is to make better wash fastness without affecting the properties discussed above. A series of nanosols were prepared from the selected silane derivatives, which were then applied on dyed cotton samples. Different tests were conducted on coated samples and compared to control. This method shows tremendous effect of increasing the washing fastness of direct dyes on cotton without essential loss of properties, such as hue, rubbing, light fastness and handle of the fabric.

2012 ◽  
Vol 627 ◽  
pp. 200-204
Author(s):  
Zhi Feng Cai ◽  
Zhen Huai Niu ◽  
Jian Xi Ren ◽  
Jing Ya Li ◽  
Mei Niu ◽  
...  

For a long time, discoloring PET/cotton blend fabric is a difficult topic in textile industry. For it, this search work was carried out to stripping PET/cotton fabric dyed by disperse/direct dye with dimethyl formamide. Though experiment, results is discovered as follows: firstly, the PET/cotton fabric dyed by disperse/direct dye is swelled in the home-made swelling liquid. Then, put it into striping liquid which is mainly contain dimethyl formamide, and heat to 140°C,and keep 30 minutes. The stripping rate of three kinds of test samples can be over 80 percent, and some can reach 95 percent. While the strength retention rate also can reach about 90 Percent.


2003 ◽  
Vol 119 (5) ◽  
pp. 297-300 ◽  
Author(s):  
Luo Min ◽  
Zhang Xiaoli ◽  
Chen Shuilin

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1413
Author(s):  
Md. Reazuddin Repon ◽  
Tarikul Islam ◽  
Halima Tus Sadia ◽  
Daiva Mikučionienė ◽  
Shakhawat Hossain ◽  
...  

Multifunctional fabrics using conventional processes have piqued increasing global interest. The focus of this experiment was to assess the modification of the cotton fabric surface by utilizing silver nanoparticles (AgNPs) and introducing functional properties along with sustainable dyeing performance. A single-jersey knitted fabric composed of cellulose-enriched 100% natural fiber (cotton) with an areal density of 172 GSM was used in this study. The standard recipe and test methods were employed. FTIR-ATR spectra were used to determine the fixing of AgNPs onto the fiber surface. A comparative assessment was conducted in response to the distribution of color, color fastness to wash, water, perspiration, rubbing, and light. Scanning electron microscopy (SEM) was used to characterize the surface of nano-Ag-deposited specimens. In terms of functional properties, antimicrobial activity was scrutinized. Our findings reveal that the nanoparticles impart remarkable antibacterial effects to cellulose-enriched fabric against S. aureus (Gram-positive) and E. coli (Gram-negative). Direct dyes were used for dyeing the proposed samples, resulting in enhanced dyeing performance. Except for light fastness, the samples dipped with AgNPs showed outstanding color levelness and color durability characteristics. The developed fabrics can be applied in a wide range of functions, including protective clothing, packaging materials, and healthcare, among others.


Author(s):  
Ana Marija Grancarić ◽  
Anita Tarbuk ◽  
Ana Sutlović ◽  
Angela Castellano ◽  
Claudio Colleoni ◽  
...  
Keyword(s):  

2013 ◽  
Vol 781-784 ◽  
pp. 674-677
Author(s):  
Sudaporn Tangkawanit

This research was an intensive study on development of Hibiscus cannabinus L. fibers dyeing with natural dye. The result reflected that color shade and color strength value results were different depend on type of mordanted. The Hibiscus cannabinus L. washing with detergent dyeing with Caesalpinia sappan L. and various mordented showed that light fastness was in level 3-4, when CuSO4 and FeSO4 mordanted light fastness result was in level 4-5, mordants as lime, CuSO4 and FeSO4 were added washing fastness property was in level 5.


2013 ◽  
Vol 796 ◽  
pp. 395-399 ◽  
Author(s):  
Xi Chun Dai ◽  
Zhi Wei Hang ◽  
Xiang Rong Wang

In order to improve fastness of printing silk fabric with natural dyes, the influence of sinapic acid on printing of silk fabric with sorghum red was investigated in this work. The silk fabric was printed using guar gum as paste, sorghum red as natural dye, sinapic acid as auxiliaries. The appropriate steaming condition was the temperature 100°C, time 15min and saturated steam. The results showed that the light fastness and the wash fastness of the printed fabric were improved by the addition of sinapic acid. It is proposed that sinapic acid can be applied as effective fastness improver of natural dyes.


2012 ◽  
Vol 441 ◽  
pp. 57-60
Author(s):  
Xia Zhu ◽  
Qing Tao Meng

t is pre-mordant dyeing. Dyeing property of Carmine, gardenia yellow and sodium copper chlorophyll on cotton fabrics which were pre-treated by metal mordant (FeSO4AlCl3 and ZnCl2 ) was studied. The reasonable pre-treatment was determined by comparing the color depth (K/S value) of dyed samples. And then, the dyed samples were treated with no-iron finishing resin 931-33 to fix the color. The result shows that the color depth of cotton fabric is greatly improved after determined pre-treatment, and the washing fastness is improved after color fixing.


2016 ◽  
Vol 20 (3) ◽  
pp. 863-866 ◽  
Author(s):  
Jia-Li Gu ◽  
Qiang-Hua Zhang ◽  
Yun-Bo Chen ◽  
Guo-Qiang Chen ◽  
Tie-Ling Xing

Cotton fabrics were treated by one-step sol-gel method. The pure silica hydrosol and phosphorus-doped hydrosol were prepared with the addition of a hydrophobic hexadecyltrimethoxysilane to decrease the surface energy of cotton fabric. The thermal properties and water repellency of treated cotton fabric were characterized by thermo-gravimetric analysis, micro combustion, limiting oxygen index, and contact angle measurement. The results showed that cotton fabric treated by phosphorus-doped silica hydrosol had excellent flame retardance, and the water repellence was apparently improved with the addition of hexadecyltrimethoxysilane.


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