Research
Effect of Varying Concentration of Soda Ash on Fastness Properties of Reactive Dyed Cotton Fabric
In this study, it was observed that the effect of soda ash on fastness properties of reactive dyed cotton fabric was compared with the varying concentration of soda ash. Here, five different concentration of soda ash (10g/l, 15g/l, 20g/l, 25g/land 30g/l) were used to compare the fastness. Different fastness properties of cotton dyed fabric were investigated such as washing fastness, perspiration fastness, rubbing fastness, and light fastness. Most of the cases, the fabric fastness properties such as washing, rubbing, perspiration, and light were improved at soda 20gm/L after further increasing the amount of soda, the fastness properties were same. So, the result of fastness properties at 20gm/L concentration of soda ash was excellent.
Effect of Scouring and Bleaching Agents on whiteness Index and Bursting Strength of Cotton Knitted Fabric
This paper shows the effect of different bleaching agent on whiteness index and bursting strength of the cotton knitted fabric. Bleaching process uses three types of bleaching agents namely hydrogen peroxide (H2O2), sodium hypochlorite (NaOCl) and calcium hypochlorite Ca(OCl)2 with varying their concentration and these are 1.5 g/l, 2.5 g/l, 3.5 g/l, 4.5 g/l, and 5.5 g/l. In the same time, scouring agent was caustic soda, and its concentration for all the bleaching agents was same. It is obvious that with the increase of bleaching agent concentration, whiteness index increases, and bursting strength reduces.
