STUDY OF POLYMETHACRYLIC ACID /SESBANIA GUM COMPOSITE AS THICKENING AGENT IN PRINTING WITH REACTIVE DYES

Galactomannan gum was isolated from Sesbania seeds and subjected to chemical modification via grafting with methacrylic acid monomers using potassium persulphate as intiator. The rheological properties of the prepared composites before and after storing for three and seven dyes were thoroughly investigated .Furthermore; the obtained composite was evaluated as thickening agent in reactive dye printing pastes of cotton fabrics.

It was found that poly methacrylic acid / Sesbania seeds gum composites could be used as a substitute for sodium alginate in printing cotton fabrics with reactive dyes, where samples acquire soft handle, K/S and overall fastness properties were obtained, nearly equal to those printed using sodium alginate. These composites are compatible with sodium alginate and their mixture at a ratio of 1:1 (wt/wt), improving the K/S than that of pure sodium alginate.