Abstract:
In this study dyeing is done for 100% cotton knitted cotton fabric with reactive dye at various
shade percentage. Used shade percentages are 2%, 3%, 5%,6%,7%. The method of dyeing is
Exhaust dyeing for 100% cotton knitted fabrics.
The main focus of this study is to determine the saturation level of reactive dyes for dyeing cotton
materials. Scouring and bleaching is done in a single bath at 98°C and dyeing is done at 60°C.
After the dyeing process, we measured the K/S value by using spectrophotometer for
determination of the color strength for 2%, 3%, 5%, 6% & 7%. We have got almost similar K/S
value for 6% & 7% shade.
Also find out the fastness properties like color fastness to washing and color fastness to rubbing
for 2%, 3%, 5%, 6% & 7% shades of the reactive dye from this experiment. The rating of the color
fastness to washing is same for 2%, 3%, 5%, 6% shade. But in 7% shade, it is found that rating of
the color fastness to washing is better if we compare with 2%, 3%, 5% & 6%. In addition, the
rating of the color fastness to rubbing for 5%, 6% & 7% is very low and higher rating for 2%, 3%.
So from this study, we can say that with the increasing shade % rating of the wash fastness is high
and rubbing fastness rating become low.
