The cotton fabrics treated with finishing agent in the
presence of chitosan as mentioned above were dyed using
reactive and basic dyes, namely reactive red 88 (6-Amino-ntoluene
sulfonic acid) and basic dye 21(N,N-Dimethyl-Pnitrosoaniline
hydrochloride), respectively, according to the
conventional exhaustion method. A dyeing bath solution
containing 2% dye (owf), 50 g/L sodium sulfate and 15 g/L
sodium carbonate was used. The dyeing process was
performed at 95 8C for 1 h using material-to-liquor ratio
1:20. After dyeing, the fabrics were thoroughly washed with
2 g/L of non-ionic detergent for 30 min at 90 8C and then
washed with cold water. The dyed fabrics were dried and
finally evaluated for their antimicrobial activity.