Vol. 12, Special Issue 9 (2023)

In recent years due to awareness of ill effects on health and environmental concerns caused by synthetic dyes people are shifting towards natural dyes and there has been a great resurgence of natural dyes. As an application of natural dyes on textile materials it has a significant role in the decline of environmental pollution. In this present study natural dye was extracted from the bark of Eucalyptus globulus with the dyeing of mulberry silk yarn and banana pseudo stem was used as a natural mordant. An aqueous medium was employed with an optimum wavelength of 580 nm and was examined under UV-Visible spectroscopy with the highest optical density is 1.743. Optimal results were achieved when dyeing at 60 °C with different mordanting techniques. The dye extraction methods with different dyeing conditions were optimized and optical density values of the dye solution before and after were recorded. The colourfastness of all the dyed samples was found to be satisfactory. SEM and FTIR were also done. Therefore it was found that eucalyptus bark can be effectively used for dyeing mulberry silk yarn.