was found that ultrasonic power substantially enhanced both
processes in comparison with the conventional heating as a result
of ultrasonic cavitation effect [16,17]. In continuation of
our interest in using power ultrasonic in dyeing [15,18,19],
we wish to report in this work the dyeing behaviour of
cationised cotton with lac dye using power ultrasonic and conventional
heating. Different factors affecting dyeability and
fastness properties were thoroughly investigated. Comparative
results of the dyeing kinetics of cationised cotton fibres using
both ultrasonic and conventional dyeing methods are also
presented.