Cotton dyeing by indigo with the borohydride process: Effect of some experimental conditions on indigo reduction and dyeing quality

Meksi, Nizar; Kechida, Moez; Mhenni, Farouk

doi:10.1016/j.cej.2007.01.001

Cited by 39 publications

(32 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In a study by Meksi et al, sodium borohydride was used as a reducing agent instead of sodium dithionite during the dyeing of cotton with indigo. The results demonstrated a satisfactory quality in dyeing (Meksi et al, 2007).…”

Section: Boron Studies In the Textile Fieldmentioning

confidence: 72%

The Usage of Boron/ Boron Compounds in the Textile Industry and Its Situation in Turkey

Sökmen

BÜYÜKAKINCI

2018

CBUP

View full text Add to dashboard Cite

Commonly found in the earth's crust, boron happens to be the 51st element of the periodic table and is not found in its elemental state in nature. It is known that there are about 230 different boron minerals in nature. Turkey has the largest boron reserves in the world. In addition to this, Turkey's boron minerals have the highest quality and production conditions that are more economical than other boron producing countries. For this reason, boron has great importance for Turkey and there is a significant demand for new areas of usage so that Turkey would be able to contribute to the national economy with these resources. The institute of BOREN (National Boron Research Institute) was established for this purpose in Turkey. This institute funds related projects for the extension of boron usage areas. One of the open sectors for innovation is textile technology. This study investigates the history of boron and its current situation in Turkey as well as the studies conducted regarding boron and its compounds especially in the textile field. Taking the available boron reserves in Turkey into consideration, the need for more research and development studies on boron as an environment-friendly element is clear for the textile industry. UDC Classification: 677; DOI: http://dx.

show abstract

Section: Boron Studies In the Textile Fieldmentioning

confidence: 72%

The Usage of Boron/ Boron Compounds in the Textile Industry and Its Situation in Turkey

Sökmen

BÜYÜKAKINCI

2018

CBUP

View full text Add to dashboard Cite

show abstract

“…Indigo (CI Vat Blue 1; 1 ) is among one of the oldest known textile dyes and has been used to dye cellulose textiles, especially cotton, for over 4000 years . Historically, indigo was obtained from the leaves of Isatis tinctoria in northern Europe and from Indigofera tinctoria in Asia using a fermentation process .…”

Section: Introductionmentioning

confidence: 99%

In situ fabric coloration with indigo synthesised in flow

Haaf

Piemonte

McQuade

et al. 2018

Coloration Technology

View full text Add to dashboard Cite

Indigo (CI Vat Blue 1) is a water‐insoluble pigment exhibiting no affinity for fibres and must be chemically reduced in basic solution to form the water‐soluble, alkaline leucoindigo (CI Reduced Vat Blue 1), in order to exhibit substantivity for fibres. Typical vat dyeing processes are time‐ and resource‐intensive, and hazardous by‐products are formed, primarily through the use of reducing agents. We describe a method for synthesising indigo in a flow reactor that allows for application of dye precursors to fibres, milliseconds before the reaction completes. The soluble precursors soak into the cotton fabric just prior to the precipitation of the insoluble indigo, effectively providing in situ coloration, without the need for a traditional redox dyebath. The reaction may be coupled with a propellant, an adaptation that allows for a sprayable form of indigo. In situ coloration with Tyrian purple (6,6′‐dibromoindigo; CI Natural Violet 1) was also demonstrated using the flow chemistry method. This research provides compelling proof of concept, but we acknowledge that the process is in its infancy and needs further development to reach a stage where it can compete commercially with current technology.

show abstract

“…A variety of electrochemical approaches including the mediated redox catalytic approach are currently under investigation to evolve commercially viable industrial process for vat dyeing [1]. Comparative assessments of chemical and electrochemical approaches are also available [1][2][3]. Photochemical, electrochemical, biochemical and sonoelectrochemical approaches promise scope for environmentally benign vat dyeing technologies in the near future [4,5].…”

Section: Introductionmentioning

confidence: 99%

Ferric-oxalate-gluconate based redox mediated electrochemical system for vat dyeing

2008

View full text Add to dashboard Cite

The voltammetric behaviour of the ferric-oxalategluconate system is investigated along with some electrochemical dyeing results. The results are compared with the conventional ferric-triethanolamine-gluconate system on a glassy carbon electrode. The ferric-triethanolamine redox system is stable and exhibits quasi-reversible redox behaviour in alkaline medium. The ferric-oxalate system undergoes hydrolysis and precipitates above pH 8. Vat dyeing requires the stability of the redox system in alkaline solutions. The ferric-oxalate redox system alone cannot satisfy this requirement. However, in the presence of excess gluconate, both systems exhibit stability in alkaline media. Mechanistic studies indicate the formation of ferrous-gluconate as the reducing agent for vat dyeing from these mediator systems. Electrochemical dyeing was also carried out in the mediator system under investigation. Colour depth was characterized by the Kubelka-Munk value (K/S) and CIE Lab-coordinates for the dyed fabrics and was found to be comparable with samples dyed using sodium dithionite as the reducing agent.

show abstract

Cotton dyeing by indigo with the borohydride process: Effect of some experimental conditions on indigo reduction and dyeing quality

Cited by 39 publications

References 6 publications

The Usage of Boron/ Boron Compounds in the Textile Industry and Its Situation in Turkey

The Usage of Boron/ Boron Compounds in the Textile Industry and Its Situation in Turkey

In situ fabric coloration with indigo synthesised in flow

Ferric-oxalate-gluconate based redox mediated electrochemical system for vat dyeing

Contact Info

Product

Resources

About