For the chitosan treated dyed
fabrics, the meta-mordanting dyeing
method showed the maximum depth of
shade for three mordants compared with
the fabrics dyed using the other two
methods. The aluminium potassium
sulphate dodecahydrate using the premordanting
dyeing method provided
better K/S value than that of the dyed
fabrics using no mordant, while the other
methods of meta-mordanting and postmordanting
provided less K/S values than
that of the dyed fabric using on mordant.
The meta-mordanting dyeing method
showed a higher colour difference (ΔE*)
value for three mordants compared with
the fabrics dyed using the other two
methods. This means that the mordants
used in the meta-mordanting method
resulted in the most shade change as
compared with that of the dyed fabrics
using no mordant.