Dyeing Procedures of Polyester Fiber in Supercritical Carbon Dioxide Using a Special Dyeing Frame

2015 ◽  
Vol 10 (4) ◽  
pp. 155892501501000 ◽  
Author(s):  
Laijiu Zheng ◽  
Huanda Zheng ◽  
Bing Du ◽  
Ju Wei ◽  
Shihui Gao ◽  
...  
Keyword(s):  
Strong Influence ◽  
The Self ◽  
Artificial Light ◽  
Color Fastness ◽  
Dyeing Performance ◽  
Dyeing Process ◽  
Polyester Fibers ◽  
Color Yield ◽  
New Type ◽  
Zero Discharge

Supercritical CO2 fluid dyeing, a new type of anhydrous dyeing technology, has the advantage of high uptake rate, short dyeing process, recycling of dyes and CO2, and zero discharge. This study investigated a dyeing technique of loose fibers using supercritical CO2 as solvent to replace water. Based on the existing characteristics of the self-developed supercritical CO2 dyeing equipment, a special dyeing frame of loose fibers was designed. Using the dyeing frame and inner and outer dyeing processes, polyester fibers were dyed with disperse red 153# maternal dyes at temperatures of 80–140?, pressures of 17–29MPa and time of 20–80min, respectively. The experimental results revealed that the dyeing performance of fibers was good on the dyeing frame, as well as with a favorably increased temperature, pressure and time. Dyeing temperature had a strong influence on the color yield. The dyeing results were compared with those of polyester fibers dyed with disperse red 153# dyes. With the special dyeing frame of loose fibers, color fastness to washing and artificial light was generally similar to conventional aqueous medium methods.

scholarly journals Cationisation of Alginate Fiber to Improve the Dyeing Properties Using Natural Dyes from Rhubarb: A New Approach

2017 ◽  
Author(s):  
Md. Kawshar Ahamed ◽  
Mohammad Raza Miah ◽  
Most. Munera khatun ◽  
Md. Hasan-Al Mamun ◽  
Cui Li
Keyword(s):  
Ferrous Sulfate ◽  
Breaking Strength ◽  
Test Methods ◽  
Color Fastness ◽  
Color Strength ◽  
New Approach ◽  
Dyeing Performance ◽  
Dyeing Process ◽  
Metallic Salt ◽  
Alginate Fiber

In this investigation dyeing of alginate fiber was carried out after cationic treatment of EPTAC (2, 3-Epoxypropyl Trimethyl Ammonium Chloride). Optimum dyeing process and parameter show good dyeing performance when alginate fiber dyed with rhubarb dye. In addition to cationic treatment is taken into account for alginate fiber to improve fastness, color strength, breaking strength. Later in dyeing for fixation ferrous sulfate, copper sulphate was considered as mordents. Moreover using pre-mordanting methods conveyed the dyeing of alginate fiber with the stave of metallic mordant and without metallic salt mordents. The evaluation of each color dyed material was done through following two terms for instance CIELAB (L*, a*, and b*) and K/S values. According to AATCC test methods color fastness to washing of the dyed fiber was determined whereas according to the ASTM D3822M standard the breaking strength of alginate fiber was estimated and tested. When dyeing was carried out on alginate fiber through considering optimum parameter like 80◦C for 90 min, M: L 1:40 and at pH 7 which showed optimum results. In addition to mostly very good wash fastness was obtained while there was no fading of the color, whereas the moderate level of color fastness to crocking was achieved. Later after dyeing the evaluations of SEM of the cationized alginate fiber and FTIR of powder from the rhubarb dye were observed. The results suggested that the surface of cationized alginate fiber was smoother than the raw alginate fiber.

Semen Litchi Extract Dyeing on Silk Fabrics

2012 ◽  
Vol 441 ◽  
pp. 127-131
Author(s):  
Hao Yu Yuan ◽  
Jian Hua Liu ◽  
Zhi Cheng Yu
Keyword(s):  
Sodium Hydroxide ◽  
Extraction Efficiency ◽  
Color Fastness ◽  
Dyeing Process ◽  
Color Yield ◽  
Dyed Fabrics ◽  
Silk Fabrics ◽  
The Stability ◽  
Mordant Dyeing ◽  
Better Than

The extraction of natural dye from semen litchi was studied, and the stability and dyeing ability of the dyestuff for the silk fabrics were also investigated. The results showed that the extraction efficiency using ethanol and sodium hydroxide was better than other solvents. The results indicated that the stability of the semen litchi stuff was good. The optimum direct dyeing process is at 90°C for 45 min with pH 4. Meanwhile, the color yield and color fastness of dyed fabrics can be improved by mordant dyeing.

Effect of Dye Dispersion Preparation on Disperse Dyeing Performance on Polyester Fabric

2012 ◽  
Vol 610-613 ◽  
pp. 534-537 ◽  
Author(s):  
Benjawan Siriphet ◽  
Jantip Suesat ◽  
Potjanart Suwanruji
Keyword(s):  
Polyester Fabric ◽  
Disperse Dye ◽  
Homogenization Process ◽  
Dyeing Performance ◽  
Dyeing Process ◽  
Color Yield ◽  
Lower Temperature

The effect of dye dispersion preparation prior to dyeing on the dyeing ability of the disperse dye on polyester fabric was studied. The influence of sodium laurylsulphate (SLS) concentrations and the homogenization process was determined. The optimum SLS concentration for dyeing observed in this study was 0.01 M. The color yield of the dye passing through the homogenization process on polyester fabric was higher than that from the conventional dye preparation. Homogenization was also found to enhance disperse dyeability at a lower dyeing temperature. It infers that the dyeing process could be done at a lower temperature. The dyeing temperature could be as low as 110oC in the presence of homogenization. The effect of homogenization on the dyeability at different dyeing times was also examined.

Low Temperature Disperse Dyeing of Polyester and Nylon 6 Fibers in the Presence of Didodecyldimethylammonium Bromide

1997 ◽  
Vol 67 (10) ◽  
pp. 767-771 ◽  
Author(s):  
Ik-Soo Kim ◽  
Kenji Kono ◽  
Toru Takagishi
Keyword(s):  
Low Temperature ◽  
High Temperatures ◽  
Nylon 6 ◽  
Color Fastness ◽  
Fastness Properties ◽  
Dye Penetration ◽  
Didodecyldimethylammonium Bromide ◽  
Polyester Fibers ◽  
Color Yield

Low temperature disperse dyeing of nylon 6 and polyester fibers is investigated when CI Disperse Violet 1 is dispersed with a double-tailed surfactant, didodecyldimethylammonium bromide (DDDMAB). Dyeing temperatures are 50°C for nylon 6 and 110°C for polyester. Color yield, dye penetration, and color fastness properties of fibers dyed in the presence of DDDMAB are almost the same as those of fibers dyed with a conventional dye, a dyehouse grade of CI Disperse Violet 1, at high temperatures. These results suggest the feasibility and practicality of low temperature dyeing of nylon 6 and polyester fibers with DDDMAB.

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.

scholarly journals Cationisation of Alginate Fiber to Improve the Dyeing Properties Using Natural Dyes from Rhubarb: A New Approach

2017 ◽  
Author(s):  
Md. Kawshar Ahamed ◽  
Mohammad Raza Miah ◽  
Most. Munera khatun ◽  
Md. Hasan-Al Mamun ◽  
Cui Li
Keyword(s):  
Ferrous Sulfate ◽  
Breaking Strength ◽  
Test Methods ◽  
Color Fastness ◽  
Color Strength ◽  
New Approach ◽  
Dyeing Performance ◽  
Dyeing Process ◽  
Metallic Salt ◽  
Alginate Fiber

In this investigation dyeing of alginate fiber was carried out after cationic treatment of EPTAC (2, 3-Epoxypropyl Trimethyl Ammonium Chloride). Optimum dyeing process and parameter show good dyeing performance when alginate fiber dyed with rhubarb dye. In addition to cationic treatment is taken into account for alginate fiber to improve fastness, color strength, breaking strength. Later in dyeing for fixation ferrous sulfate, copper sulphate was considered as mordents. Moreover using pre-mordanting methods conveyed the dyeing of alginate fiber with the stave of metallic mordant and without metallic salt mordents. The evaluation of each color dyed material was done through following two terms for instance CIELAB (L*, a*, and b*) and K/S values. According to AATCC test methods color fastness to washing of the dyed fiber was determined whereas according to the ASTM D3822M standard the breaking strength of alginate fiber was estimated and tested. When dyeing was carried out on alginate fiber through considering optimum parameter like 80◦C for 90 min, M: L 1:40 and at pH 7 which showed optimum results. In addition to mostly very good wash fastness was obtained while there was no fading of the color, whereas the moderate level of color fastness to crocking was achieved. Later after dyeing the evaluations of SEM of the cationized alginate fiber and FTIR of powder from the rhubarb dye were observed. The results suggested that the surface of cationized alginate fiber was smoother than the raw alginate fiber.

scholarly journals Eco-Friendly Pretreatment of Cotton Fabric With Banana Ash and Dyeing Using Banana Sap

2017 ◽  
Vol 13 (27) ◽  
pp. 390
Author(s):  
Avik Kumar Dhar ◽  
Maitry Bhattacharjee ◽  
Most. Mahfuza Rima ◽  
Muhammad Abdur Rashid
Keyword(s):  
Weight Loss ◽  
Cost Saving ◽  
Cotton Fabric ◽  
Color Fastness ◽  
Fastness Properties ◽  
Dyeing Performance ◽  
Dyeing Process ◽  
Plain Fabric ◽  
And Performance ◽  
Different Color

The aim of this study is to evaluate environment supportive pretreatment and dyeing process. In this project, pretreatment of cotton fabric was done by using banana ash. Also, dyeing was carried out with banana sap along with different mordants that are eco-friendly and cost saving. Here, all the experiments were carried out on woven (plain) fabric of 141 GSM. Firstly, cotton fabric was scoured by means of banana root’s ash (pH-10.2). It was then dyed with banana sap (pH-5.4). This banana ash scoured cotton fabric was compared with conventionally scoured cotton fabric through weight loss % and absorbency test. In addition, fastness properties and performance of dyeing were measured through CIE L*C*h, K/S value, and different color fastness tests. Banana ash scoured and dyed with banana sap, using mordant (horitoky), provided the best dyeing performance and color fastness to wash, rubbing, and perspiration than the others.

Small Holes Fabrication on Soda Glass by Self-Elastic Polycrystalline Diamond Tool

2012 ◽  
Vol 516 ◽  
pp. 516-521
Author(s):  
Chung Chieh Cheng ◽  
Dong Yea Sheu
Keyword(s):  
Surface Roughness ◽  
Diamond Tool ◽  
Polycrystalline Diamond ◽  
The Self ◽  
High Quality ◽  
Drilling Tool ◽  
Drilling Tools ◽  
Absorbing Materials ◽  
New Type ◽  
Small Holes

This study describes a novel process to drill small holes in brittle materials such as glass, silicon and ceramic using a self-elastic polycrystalline diamond (PCD) drilling tool. In order to improve the surface roughness and reduce crack of the small holes, a new type of self-elastic PCD drilling tool equipped with vibration absorbing materials inside the housing was developed to fabricate small holes in glass in this study. The self-elastic PCD drilling tools could absorb the mechanical force by the vibration absorbing materials while the PCD tool penetrates into the small holes. Compared to conventional PCD drilling tools, the experimental results show that high-quality small holes drilled in glass can be achieved with cracking as small as 0.02mm on the outlet surface using the self-elastic PCD drilling tool.

Toward a Relational Cosmopolitanism

2019 ◽  
pp. 140-185
Author(s):  
Margaret A. McLaren
Keyword(s):  
Cultural Context ◽  
The Self ◽  
Gender Justice ◽  
Power Relationships ◽  
Structural Inequality ◽  
Rabindranath Tagore ◽  
Rich Diversity ◽  
Political Relationships ◽  
New Type ◽  
The Rich

This chapter argues that cosmopolitanism as a framework for global gender justice fails to capture the rich diversity and the power differences among women. It evaluates two prominent cosmopolitan positions, individualist cosmopolitanism and institutional cosmopolitanism. Individualist cosmopolitanism relies on an abstract and atomistic notion of the self. Abstracting from social and cultural context diminishes the significance of identity, and holding a strongly individualist notion of the self obscures the power relationships that undergird structural inequality. Institutional cosmopolitanism accounts for our interconnections through unequal global economic and political relationships, but it leaves aside issues of gender and culture. The chapter draws on the work of Rabindranath Tagore to construct a new type of cosmopolitanism, relational cosmopolitanism, that recognizes our interdependence, appreciates diversity, and criticizes power relationships. Supplemented by feminist ideas of world traveling and difference as a creative resource, relational cosmopolitanism is a promising framework for feminists interested in global gender justice.

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