Edith Yohanna Ishidi
Nigerian Institute of Leather and Science Technology, Nigeria
Title: Physio – Mechanical characteristics of natural dyes and mordant on vegetable and chrome tanned leather
Biography
Biography: Edith Yohanna Ishidi
Abstract
The increase cases of allergic reaction against synthetic dyes and the changing environmental condition has stirred up the urgent need for an environmentally safe dye for a replacement. In this present work, six different plants were used for the experiments: Mango (Mangnifera indica) Zobo (Hibiscus sabdariffa), Savanna mahogany (Khaya senegalensis), Red onion (Alluim cepa) Annatto (Bixa orellea).The extraction was done using different solvents such as Choroform,Acetone,Ethanol, Methanol and Water (Distilled).The crude extract was used to dye vegetable and chrome tanned leathers with plantain\ citrus peels as sources of mordant. Four different microbes were used to ascertain the microbial activities of leathers treated with the extract. The results showed that dyes from plant cannot replace synthetic dyes due to low percentage yield of the plants. It was also established that plant extracts did not affect the tensile strength of the finished leather. The use of plantain and citrus peels as a mordant for leather dyeing was established, except for citrus on vegetable tanned leather which showed burning effect