An increased interest for natural dyes, started several
years ago, on the part of the consumers, is just beginning to be felt.
This paper concerns with the development of process for the
purification of natural dyestuff extracted from an abundantly
occurring plant namely Mangifera Indica Linn (Mango Tree),
available almost everywhere in Myanmar. The objectives of this
work are to produce the purified natural dyestuff extracted from
mango bark, to study the colour of the dyed protein fibres (wool and
silk yarns) by using various dyeing methods, and to study the
fastness properties of the dyed sample materials. The compounds
present in the mango bark and dyestuff are determined by
Phytochemical tests. Optimization of dye purification condition is
done by varying solvent types, solid to liquid ratio, time and
temperature. Purified natural dye powder extract is then applied on
protein fibres (wool and silk yarn) by using mordant with various
dyeing conditions. Fastness tests on dyed samples for light, rubbing
and washing fastness are carried out. The range of colour developed
on dyed materials are evaluated in terms of (L*a*b*) CIELAB
Coordinates and the dye absorption concentration on the textile
materials is studied by using K/S values.