Sustainable Utilization of Ultrasonic Radiation in Extraction and Dyeing of Wool Fabric Using Logwood (Haematoxylum Campechianum) Extract.

Environmental regulations imposed by world renowned associations have forced the global community to use eco-friendly and sustainable dyed products in applied fields. The current study has been concerned with the effect of ultrasonic radiation on the extraction of Hematein from logwood and its application onto wool fabric. Where the extraction was carried out by boiling respective amount of powder into methanolic medium, the extract obtained and wool fabrics were treated with ultrasonic radiation for 15, 30, 45 and 60 min. Dyeing of irradiated and un-irradiated fabric was carried out using irradiated and un-irradiated extracts at 70 °C for 45 min. keeping material to liquor ratio of 1:25. For improvement in shades, salts of aluminum, iron and tannic acid as chemical mordants and extracts of Zeera (Cuminum cyminum), Harmal(Peganumharmala) and Turmeric (Curcuma longa) as source of bio mordants have been employed at 70 °C for 45 min. keeping fabric to mordant ratio of 1:25. It is found that extract after Ultrasonic treatment (US) for 45 min. has given acceptable results. The colour strength results show that1% Al, 3%Fe, and 7% Tannic acid as pre- chemical mordants, where as before dyeing 7% of Zeera, Harmal and turmeric extracts have given excellent color coordinates, Similarly 1% Al, 7%Fe, and 7% Tannic acid as post- chemical mordants, where as after dyeing 3% of Zeera, 7% Harmal and 7% Turmeric have given good color characteristics at mild conditions. It is inferred that ultrasonic treatment has enhanced the coloring behaviour of wool using hematein extracted from logwood chips. [ABSTRACT FROM AUTHOR]