Suitability of apple tree bark as a natural source for cotton dyeing

Suitability of apple tree bark as a natural source for cotton dyeing. The study of dyeing cotton fabric with apple bark extract with the use of mortars - inorganic aluminum, tin, iron and copper salts, moreover oxalic acid and without mortar. The color of the fabric was determined using the CIE L*a*b* system. The result was a yellow color of varying shades, ranging from lemon to warm, intense yellow. In the case of iron and copper, a significantly different color was obtained, dark khaki and rusty brown respectively. Color fastness tests were carried out using hot water, mineral acid, mild and hot washing, dry cleaning and natural exposure to sunlight. It has been found to have excellent resistance to dry cleaning and good to a gentle wash. Dyed fabric showed the weakest resistance to sunlight and to mineral acid.