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Author(s): Snezana Urosevic | Dragan Djordjevic

Journal: Annals of the University of Oradea. Fascicle of Textiles, Leatherwork
ISSN 1843-813X

Volume: XIV;
Issue: 2;
Start page: 158;
Date: 2013;
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Keywords: dyeing | wool fabric | aqueous extract | hibiscus | St. John’s wort | marigold | CIELab.

: One-bath dyeing procedures of wool fabric using aqueous extracts of plants - hibiscus, St. John’s wort and marigold were investigated. On the basis of results obtained, it could be concluded that applied plant extracts have good reasons for commercial dyeing of wool fabrics designed for clothing that would not be a potential allergen during use, i.e. when in contact with human skin. The applied wool dyeing processes with plant flowers water extracts give a chance of commercialization of small plants for lesser batches, such as single examples and the like. The spectral characteristics lead to the conclusion that the dyeing occurs, with changes in shade, hue, and saturation of the dye. The dye exhaustion from the dyeing bath is slightly less (max 61%), which can be solved by using smaller baths and by addition of certain exhaustion improving agents. Spectral distribution of reflection curves are in correlation with the type of extracts and the mordant used as is indicated both by different spectral K/S values and CIEL*a*b* system parameters. At the same time, very good fastness characteristics of wool fabric dyeing are achieved. From environmental view-point it is a suitable replacement of synthetic dyes with “natural products”, which may provide not only a strategy for reducing risks and pollutants but also opportunities for new markets and jobs developed by involving ecology in market policy
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