Investigating Morinda citrifolia wood as a sustainable dye source: a return to natural colours

Abstract

This study aimed to examine the dye-fixing properties of cotton fabrics dyed with a dye extracted from Morinda citrifolia L. wood under various physicochemical conditions, including temperature changes, heating durations, and mordant treatment techniques, to achieve noticeable and stable dye fixation.  For pre-, post-, and simultaneous mordanting procedures, iron salts such as alum, ferric chloride, stannous chloride, and ferrous sulphate were utilized. Dyeing with ferrous sulfate resulted in a higher dye uptake on cotton fibres (34.43 %), according to the results. The colour fastness of noni wood dye is best achieved by using alum with a pre-mordanting technique.