Application of eco-friendly natural dye on cotton using combination of mordants

Abstract

The colour fastness properties of the colourant extracted from the flower of <i style="">Spathodea campanulata</i> on cotton have been studied using different combination (1:3,1:1 and 3:1) of various mordants, such as myrobolan:nickel sulphate, myrobolan: aluminium sulphate, myrobolan: potassium dichromate, myrobolan: ferrous sulphate and myrobolan:stannous chloride. The wash, rub, light and perspiration fastness of the dyed samples have been evaluated. It is found that <i style="">Spathadia campanulata</i> dye can be successfully used for the dyeing of cotton to obtain a wide range of colours by using various combinations of mordants. With regards to colour fastness, test samples exhibit excellent fastness to washing, and rubbing, except for pre-mordanting using myrobolan: potassium dichromate combination; and good to excellent fastness to perspiration in both acidic and alkaline media.