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International Journal of Interdisciplinary Research

Table 1 Color changes of wool fabrics dyed with spent coffee extract

From: Effects of tannin mordanting on coloring and functionalities of wool fabrics dyed with spent coffee grounds

Mordant concentration (wt%) L* a* b* ΔE
Pristine 86.54 − 0.585 12.68
0.00 49.29 9.69 26.82 41.15
0.25 48.77 9.95 26.83 41.68
0.50 48.40 9.93 26.87 42.03
1.00 50.16 9.82 26.92 40.43
2.00 50.50 9.82 26.86 40.10