Waste from Eucalyptus Wood Steaming as a Natural Dye Source for Dyeing Cotton (original) (raw)
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Wash Fastness of Textile Fibers Dyed with Natural Dye from Eucalyptus Wood Steaming Waste
Natural dyes are gaining interest due their expected low risk to human health and to the environment. In this study, the wash fastness of a natural coloring matter from the liquid waste produced in the steam treatment of eucalyptus wood in textile fabrics was investigated. Specifically, eucalyptus wood extract was used to dye cotton, nylon and wool in an exhaust dyeing process without the addition of the traditional mordanting agents and then submitted to wash fastness analysis. The resulting dyed fabrics were evaluated for color fastness. It was found that wash fastness of dyed fabrics was very good to cotton and excellent to nylon and wool.
Eucalyptus Bark as a Source of Natural Dye for Cotton Fabric
International Journal of Current Microbiology and Applied Sciences, 2019
Natural dye extracted from Eucalyptus bark was applied to cotton fabrics by conventional method of dyeing. Alum, Vinegar, Myrobolan, Betel leaves, Copper sulphate (CuSO4), Alum + CuSO4, Vinegar + CuSO4, Myrobalan + CuSO4, and Betel leaves + CuSO4 were the treatments used for mordants. The dyeing was carried out with and without mordants by pre-mordanting method. The colour of each dyed material was investigated in terms of CIELAB (L*, a* and b*) and K/S values by perimer color scan. The colour fastness to washing, rubbing (dry and wet), light and perspiration of aqueous dyed fabrics were tested according to ISO standards. Results showed that cotton dyed fabrics without mordant showed a shade of reddish brown, while other mordants exhibited light to dark brown shades. The colour fastness to washing and perspiration were good except unmordanted fabric which showed moderate to good fastness to washing, whereas colour fastness light and dry rubbing were excellent for all fabrics; wet rubbing was good for all nine fabrics except unmordanted fabric which showed moderate to good fastness.
Eucalyptus bark as a novel source for dyeing silk fabric
International journal of Chemical Studies, 2019
The effectiveness of Eucalyptus bark dye on silk fabric treated with nine different mordants and without mordant was studied. Nine types of mordants viz., alum, vinegar, myrobalan, betel leaves, Copper sulphate (CuSO4), CuSO4+alum, CuSO4+vinegar, CuSO4+myrobalan, and CuSO4+betel leaves were used, each at one per cent of weight of fabric (o.w.f) and with the material to liquor ratio (MLR) of 1:40. The variations in the colour strength and coordinates with respect to dyed without and with mordant showed a significance difference in colour obtained. The results of colour fastness analysis of dyed fabrics exhibited 4 grey scale rating for washing (T1, T2, T3, T4 and T10) fabrics; dry (4-5) and wet (4) rubbing for T1 to T10 fabrics; light (5) for T1 to T9 fabrics, (4-5) for T10 fabric and perspiration 4 (under acidic and alkaline conditions) for T1 to T10 fabrics. The K/S values at 400nm, ten dyed samples were ranged from 15.11 to 26.15, whereas the CIE Lab values were ranged from 55.15 to 66.89, 4.79 to 12.23, and 17.28 to 25.24 for L*, a* and b* respectively. This suggests that Eucalyptus bark dye is a novel source for dyeing the silk fabric and manufacturing of eco-textiles.
A natural dye extracted from eucalyptus leaves was applied to a silk and wool fabric by the use of two padding techniques, namely the pad-batch and pad-dry techniques under different conditions. Silk and wool fabrics dyed in a solution composed of eucalyptus extract from leaves showed a shade of pale yellow to brown. The exception was when the fabric was dyed with ferrous mordant, resulting in a shade of dark grayish-brown. The fastness properties ranged from good to excellent, while light fastness was fair to good.
Colorimetric Analysis and Fastness Properties of Jute Fabric Dyed with Eucalyptus Leaves
TEKSTILEC, 2020
Natural dyestuff has reverted its position in the colouration of textile substrates due to rising concerns of consumers and buyers, particularly about environmental impacts and health issues. Eucalyptus leaves were selected in this study as a source of natural dye along with some of the most generally used mordants to observe the impact of dyeing on jute fabric while trying to keep the dyeing parameters at a minimum level. Dyes were extracted from eucalyptus leaves by boiling in water. Then, the fabric was pre-mordanted using different synthetic mordanting agents, such as alum, potassium dichromate, copper sulphate and ferrous sulphate, which are generally used to substantively enhance the dyestuff on textile fabrics and to improve the fastness properties. Synthetic mordant was used here instead of natural mordant due to the better dyeing compatibility of jute fabric with eucalyptus leaves, since natural mordant has little effect on jute fabric during the process of dyeing. Another ...
Fibres & Textiles in Eastern Europe, 2011
This research was concerned with dye extraction from the leaves of eucalyptus and with the application of this dye for silk and wool fabric dyeing by the exhaustion process. Optimal results were achieved when dyeing at 90 °C for 40 minutes and at pH 4. Silk and wool fabrics dyed in a solution composed of eucalyptus extract from leaves in combination with a mordant compound showed a shade of yellowish-brown. An exception was when the fabrics were dyed with FeSO4 mordant, resulting in a shade of dark grayish-brown. The colour fastness to light and rubbing after dyeing the silk and wool fabrics treated with the mordant was investigated, the results of which showed fair to good fastness, whereas the colour fastness to washing was at a good to very good level. The results confirmed that natural dyes from eucalyptus leaf extract have potential applications for fabric dyeing and producing ultraviolet (UV) protective silk and wool fabrics.