THE USE OF GLUCOSE AS ECOLOGICAL REDUCING AGENT FOR SULPHUR DYES: OPTIMIZATION OF EXPERIMENTAL CONDITIONS

Romdhani Zouhaier, Dhouib Sofiène, Sakli Faouzi

Abstract


At the present time, dyeing of textile material requires the use of various auxiliaries. These used agents have adverse effects on the environment. In general, for the dyeing with sulphur dyes, a reducing agent is used to transform the dye molecule to a water soluble leuco form that can diffuse into the fibre. In this study, three reducing agents were used : the sodium sulphide, sodium dithionite and glucose as an environmentally friendly reducer. To compare their effect on the reduction of the sullphur dyestuff, the redox potential, pH and the colour yield (K/S) were measured according to the concentration of reducing agent and caustic soda concentration. Results of leuco sulphur black B reduction by the different reducing agents were evaluated by measuring the colour yield (K/S) and the brightness variation after the washing process. The obtained results showed that glucose can offer some scientifically results similar to those done with sodium sulphide which can give for the reduction of sulphur dyestuff

Full Text:

PDF


DOI: http://dx.doi.org/10.19044/esj.2014.v10n18p%25p


European Scientific Journal (ESJ)

 

ISSN: 1857 - 7881 (Print)
ISSN: 1857 - 7431 (Online)

 

Contact: contact@eujournal.org

To make sure that you can receive messages from us, please add the 'eujournal.org' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.




Publisher: European Scientific Institute, ESI.
ESI cooperates with Universities and Academic Centres on 5 continents.