Textiles and Clothing Sustainability

Table 2 Color characteristics and color fastness properties of wool dyed with R. cordifolia and (pre-, meta-, and post-) mordanted with 3 % o.w.f. A. catechu

From: Eco-dyeing of wool with Rubia cordifolia root extract: Assessment of the effect of Acacia catechu as biomordant on color and fastness properties

Mordant	L*	a*	b*	c*	h^o	K/S	Light fastness	Wash fastness			Rub fastness
Mordant	L*	a*	b*	c*	h^o	K/S	Light fastness	c.c.	c.s.	c.w.	Dry	Wet
Nil	48.1	40.0	36.2	53.9	42.1	11.02	4/5	3/4	4/5	4/5	4/5	3/4
Pre-mordanted	34.0	32.2	17.1	36.4	27.9	17.36	5	5	5	5	5	4/5
Meta-mordanted	35.2	31.6	16.1	35.5	26.9	14.33	5	4/5	5	5	5	4
Post-mordanted	34.8	31.9	16.8	36.0	27.7	16.81	5	4/5	5	5	5	4

c.c. color change, c.s. color staining on cotton, c.w. color staining on wool

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