Investigation of the dyeing properties of the colorant extracted from Juglans regia L. leaves on cellulosic and protein fabrics

Abstract

Dyeing properties of different fabric species were investigated using leaf extract of Juglans regia L. For this purpose, the cotton and wool fabrics were dyed using brown napthaquinon colorant extracted from walnut leaves by pre-mordanting, meta-mordanting and post-mordanting methods in the presence of copper sulfate (CuSO4.5H2O), ferrous sulfate (FeSO4.7H2O) and alum sulfate (AIK(SO4)2.12H2O) at medium pH. Color codes were determined with Pantone Color Guide, and K/S and L* a* b* values were determined using color measurement spectrophotometer, and also washing-, crocking-fastness levels were evaluated using gray scale. High fastness colors were obtained in general in the present study.