Green reducing agents for indigo dyeing on cotton fabrics

2018 ◽  
Vol 197 ◽  
pp. 106-113 ◽  
Author(s):  
Laksanawadee Saikhao ◽  
Jantip Setthayanond ◽  
Thitinun Karpkird ◽  
Thomas Bechtold ◽  
Potjanart Suwanruji
Keyword(s):  
Cotton Fabrics ◽  
Reducing Agents ◽  
Indigo Dyeing

Effects of UV absorbers and reducing agents on light fastness of cotton fabrics pre-dyed with sodium copper chlorophyllin and gardenia yellow

2020 ◽  
Vol 90 (19-20) ◽  
pp. 2245-2257
Author(s):  
Zhong Zhao ◽  
Mingwen Zhang ◽  
Chris Hurren ◽  
Liming Zhou ◽  
Jihong Wu ◽  
...  
Keyword(s):  
Sodium Citrate ◽  
Cotton Fabrics ◽  
Reducing Agents ◽  
Simulated Sunlight ◽  
Light Fastness ◽  
Sunlight Irradiation ◽  
Uv Absorbers ◽  
Dyed Fabrics ◽  
Sodium Copper Chlorophyllin ◽  
Inorganic And Organic

In this study, inorganic and organic UV absorbers, as well as reducing agents, were employed to treat cotton fabrics that were pre-dyed with two natural dyes (sodium copper chlorophyllin and gardenia yellow) to improve light fastness. The performance of UV absorbers and reducing agents was evaluated by comparing ΔE (CIELAB) of the treated samples caused by their exposure to simulated sunlight irradiation. Results show that both inorganic and organic UV absorbers present unsatisfactory effects on inhibiting the photo-fading of dyes, while the reducing agents (i.e. sodium citrate and glucose) exhibit distinctive effects on improving their light fastness. The protection was enhanced when the amount of the two reducing agents was increased from 1% to 5% o.w.f. Sodium citrate was found to be more efficient than glucose in this regard. Change in shade of gardenia yellow and sodium copper chlorophyllin pre-dyed fabrics with a treatment of 5% o.w.f. sodium citrate after 10 h exposure to simulated sunlight were ΔE 3.95 and 2.46, while for the controls were ΔE 10.34 and 8.11, respectively.

scholarly journals Comparison of sodium dithionite and glucose as a reducing agent for natural indigo dyeing on cotton fabrics

2017 ◽  
Vol 108 ◽  
pp. 03001 ◽  
Author(s):  
Laksanawadee Saikhao ◽  
Jantip Setthayanond ◽  
Thitinun Karpkird ◽  
Potjanart Suwanruji
Keyword(s):  
Sodium Dithionite ◽  
Cotton Fabrics ◽  
Reducing Agent ◽  
Indigo Dyeing

Environment-friendly nanocellulose-indigo dyeing of textiles

2021 ◽  
Author(s):  
Smriti Rai ◽  
Raha Saremi ◽  
Suraj Sharma ◽  
Sergiy Minko
Keyword(s):  
Reducing Agents ◽  
Environment Friendly ◽  
Indigo Dyeing ◽  
Blue Jeans

Dyeing of one pair of denim blue jeans consumes about 50-100 liters of water loaded with toxic reducing agents and alkali that remain effluent in wastewater. Here we introduce environmentally...

Mao berry as a green reducing agent in natural indigo dyeing on cotton fabrics

2021 ◽  
pp. 1-7
Author(s):  
Laksanawadee Saikhao ◽  
Jantip Setthayanond ◽  
Thitinun Karpkird ◽  
Potjanart Suwanruji
Keyword(s):  
Cotton Fabrics ◽  
Reducing Agent ◽  
Indigo Dyeing

scholarly journals The application of catalase for the elimination of hydrogen peroxide residues after bleaching of cotton fabrics

2002 ◽  
Vol 74 (3) ◽  
pp. 433-436 ◽  
Author(s):  
ALEXANDRA M. AMORIM ◽  
MARCELO D. G. GASQUES ◽  
JÜRGEN ANDREAUS ◽  
MAURO SCHARF
Keyword(s):  
Hydrogen Peroxide ◽  
Reactive Dye ◽  
Cotton Fabrics ◽  
Reducing Agents ◽  
Final Color

Results of dyeing of cotton fabrics with a bifunctional reactive dye were significantly improved when the fabric after bleaching with hydrogen peroxide was treated with catalase for the elimination of hydrogen peroxide residues from the fabrics. Compared to processes with a varying number of washing steps, with and without commercial reducing agents, the consumption of water could be significantly reduced, without altering the final color shade.

Using of ecofriendly α-hydroxycarbonyls as reducing agents to replace sodium dithionite in indigo dyeing processes

2012 ◽  
Vol 24 ◽  
pp. 149-158 ◽  
Author(s):  
Nizar Meksi ◽  
Manel Ben Ticha ◽  
Moez Kechida ◽  
Mohamed Farouk Mhenni
Keyword(s):  
Sodium Dithionite ◽  
Reducing Agents ◽  
Indigo Dyeing

Methods for the Concentration of Bovine Ac-Globulin (Factor V)

1961 ◽  
Vol 06 (03) ◽  
pp. 435-444 ◽  
Author(s):  
Ricardo H. Landaburu ◽  
Walter H. Seegers
Keyword(s):  
Room Temperature ◽  
Barium Carbonate ◽  
Deae Cellulose ◽  
Reducing Agents ◽  
Factor V ◽  
Isoelectric Precipitation ◽  
Stabilizing Agent ◽  
Bovine Plasma ◽  
The Stability

SummaryAn attempt was made to obtain Ac-globulin from bovine plasma. The concentrates contain mostly protein, and phosphorus is also present. The stability characteristics vary from one preparation to another, but in general there was no loss before 1 month in a deep freeze or before 1 week in an icebox, or before 5 hours at room temperature. Reducing agents destroy the activity rapidly. S-acetylmercaptosuccinic anhydride is an effective stabilizing agent. Greatest stability was at pH 6.0.In the purification bovine plasma is adsorbed with barium carbonate and diluted 6-fold with water. Protein is removed at pH 6.0 and the Ac-globulin is precipitated at pH 5.0. Rivanol and alcohol fractionation is followed by chromatography on Amberlite IRC-50 or DEAE-cellulose. The final product is obtained by isoelectric precipitation.

The study of the drilling mud fluid loss reducing agents based on carboxymethyl starch and cellulose

2017 ◽  
pp. 102-105
Author(s):  
R.R. Sagitov ◽  
◽  
K.M. Minaev ◽  
A.S. Zakharov ◽  
A.S. Korolev ◽  
...  
Keyword(s):  
Reducing Agents ◽  
Fluid Loss ◽  
Drilling Mud ◽  
Carboxymethyl Starch
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