Dyeing of textile fibres with enzyme reduced indigo effect of reaction conditions on indigo reduction and dyeing quality /
Increasing eco-efficiency of textile wet processing has become a key factor toprovide sustainability in the textile industry. The conventional reducing agent used in vat (indigo) dyeing (the sodium dithionite) is not recyclable and as a consequence causes enormous environmental problems. Although, a...
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| Main Authors: | , , , , |
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| Format: | Book Chapter |
| Jezik: | English |
| Teme: | |
| Sorodne knjige/članki: | Vsebovano v:
New horizons of textile finishing |
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| Izvleček: | Increasing eco-efficiency of textile wet processing has become a key factor toprovide sustainability in the textile industry. The conventional reducing agent used in vat (indigo) dyeing (the sodium dithionite) is not recyclable and as a consequence causes enormous environmental problems. Although, a lot of efforts have been dedicated to develop more ecologically attractive methods for indigo dyeing, there is still no satisfactory alternative to the chemical reducing agents. This paper reports on the application of enzymatic indigo reduction as a viable alternative to the conventional reducing chemistry at indigo dyeing. The potential of oxidoreductases from newly isolated Bacillus subtilis for indigo dyeing was studied in the presence of anthraquinone mediators. Dyeing with different textile fibre-forming polymers was investigating using UV-Vis spectroscopy and cyclic voltammetry to follow reaction. The dye reduction process was optimised in terms of redox potential, pH and temperature conditions and compared to the chemically (sodium dithionite based) approach to obtain the reduced leuco dye form. The colour and colour fastness properties (to wash, light and perspiration) of enzymatically indigo-dyed fibres were evaluated. |
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| Opis knjige/članka: | Soavtorji: Georg Guebitz, Maria Diaz Gonzalez, Tzanko Tzanov, Vanja Kokol. |
| Fizični opis: | 10 str. |