Dyeing without a mordant
The untreated and 1% chitosan
treated cotton fabrics were dyed with 2 g
of dye extract at a liquor ratio of 35:1.
The temperature of the dye bath was
raised to 100°C and maintained at this
temperature for 1 h. The dyeing was
carried out in an AHIBA NUANCE
dyeing machine. The dyed fabrics were
rinsed with tap water, followed by soaping
at a liquor ratio of 50:1 with sodium
hydroxide 1 g/l at 50°C for 45 min.
Finally, the fabric samples were washed
with tap water, squeezed and dried.