Desizing of synthetic fabrics and their blends

3 Desizing of Synthetic Fibre Fabrics and Their Blends with Cellulose 

Polyester sizing agents are not removed by simple washing treatment. Suitable detergents for removing polyester size are the efficient anionic or non-ionic types 

Polyaerylic is a water soluble salt of acrylic acid and are soluble in mildly acidic or alkaline solutions. 

Recently a cold desizing process using sodium sulphide in a weakly alkaline solution is reported [23]. The rate of desizing is increased 5-fold compared with alkali alone. A mechanism involving a catalytic effect of the sodium sulphide in the hydrolysis of glucoside bonds in the polysaccharide is proposed. 

---