Mordanting
A mordant is usually a metal ion used to set dyes on
fabrics by forming an insoluble compound with the dye. It
was thought that the presence of amidoxime in the modified
acrylic fibers would increase the reactivity of the fiber
toward metal ion by virtue of its metal forming complex,
which would help further dye-fiber bond fixation as depicted
in Scheme 2.
Alum and ferrous sulfate mordants were used in 3 g/l for
pre-mordanting acrylic fiber samples to produce different