RESUMEN
Guar gum was isolated from guar seeds and subjected to chemical modificationvia carboxymethylation followed by carbamoylethylation in alkaline medium usingmonochloroacetic acid and acrylamide, respectively. The results indicated thatthe nitrogen content of the obtained derivatives increased by increasing theamount of acrylamide; while, the opposite holds true on raising the reactiontemperature. Pastes of these derivatives are characterized by non-Newtonianpseudoplastic behavior and their apparent viscosity depends on the degree ofcarbamoylethylation expressed as% N. Utilization of these derivatives asthickening agents in printing cotton fabrics with reactive dyes was alsoinvestigated. It was found that the color strength on using theaforementioned guaran derivatives is slightly lower than their correspondingsamples printed using sodium alginate. The overall fastness properties of theprinted goods are nearly equivalent