Ultrasonic dyeing of cationized cotton fabric with natural dye

Ultrasonic dyeing of cationized cotton fabric with natural dye.

Part 1: Cationization of cotton using Solfix E
M.M. Kamel *, M.M. El Zawahry, N.S.E. Ahmed, F. Abdelghaffar
National Research Centre, Textile Research Division, El-Behoos Street, Dokki, P.O. Box 12622 Cairo, Egypt

a r t i c l e i n f o

Article history:
Received 25 March 2008
Received in revised form 22 July 2008
Accepted 7 August 2008
Available online 15 August 2008

Keywords:
Cationization
Cotton
Ultrasound
Sonochemistry
Cochineal dye
Dyeing

a b s t r a c t
The dyeing of cationized cotton fabric with Solfix E using colouring matter extracted from Cochineal dye
has been studied using both conventional and ultrasonic techniques. Factors affecting dye extraction such
as ultrasound power, particle size, extraction temperature and time were studied. The results indicated
that the extraction by ultrasound at 300W was more effective at lower temperature and time than conventional
extraction. The effect of various factors of dye bath such as pH, salt concentration, ultrasound
power, dyeing time and temperature were investigated. The colour strength values obtained were found
to be higher with ultrasound than with conventional techniques. The results of fastness properties of the
dyed fabrics were fair to good. The scanning electron microscope (SEM) images of the morphological and
X-ray analyzes were measured for cationized cotton fabrics dyed with both conventional and ultrasound
methods, thus showing the sonicator efficiency.
2008 Published by Elsevier B.V.

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