the presence of sodium hypophosphite (SHP) and chitosan
hydrochloride as catalyst, respectively. Chitosan hydrochloride
(Ch-HCl) has a dual function, since it provides cationic
sites to the cotton cellulose for both BTCA and Arcofix
NEC and as a catalyst in the case of Arcofix NEC. After
treatment, the cotton fabrics were dried at 85 8C for 5 min
and cured at 160 8C for 3 min.