Influence of the mordant on dyeing properties of cotton yarn with natural dye extracted from teak leaves

Abstract

The objective of this research was to study influence of five different kinds of the mordant, copper sulfate (CuSO4), ferrous sulphate (FeSO4), alum and chitosan on dyeing properties of cotton yarn with natural dye extracted from teak leaves. Cotton yarn dyeing with the extracted dye from teak leaves was carried out at 60?C for 30 minutes with a material to liquor ratio of 1:5. Three mordanting methods such as pre mordanting, simultaneous mordanting and post mordanting were used. After that dyed clothes were subjected to measurement using CIELAB system and fastness tests. The effect of kinds of mordents on the hue of dyeing of cotton yarn shown that CuSO4, FeSO4, gave greenish yellow and yellowish brown, respectively. While as alum and chitosan gave violet red. Moreover, using CuSO4 (pre mordanting or simultaneous mordanting) and FeSO4 (simultaneous mordanting) improved fastness properties to light better than without a mordant.