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Table 2 Average colour coordinate values of different fabrics treated with Quercus robur L. (fruit cups) dye using Populus deltoides Bartram ex Marsh (wood ash) as mordant

From: Dyeing and fastness properties of Quercus robur with natural mordants on natural fibre

Methods Colour coordinates
L* a* b* C* h° ΔE
Wool fabric
 Without mordant 73.0 4.3 31.2 31.5 82.0 31.1
 Pre-mordanting 56.8 5.2 25.3 25.9 78.3 32.9
 Simultaneous mordanting 56.2 3.3 16.4 16.7 78.6 30.9
 Post-mordanting 61.0 7.0 21.7 22.8 72.0 28.1
Cotton fabric
 Without mordant 80.4 4.5 19.7 20.2 77.1 18.1
 Pre-mordanting 81.7 3.0 14.0 14.3 77.8 13.5
 Simultaneous mordanting 88.6 3.1 25.8 26.0 83.2 19.3
 Post-mordanting 91.1 2.7 10.3 10.7 74.9 3.9
Silk fabric
 Without mordant 65.8 4.8 28.9 29.3 80.5 30.0
 Pre-mordanting 66.2 6.5 25.7 26.5 75.7 27.4
 Simultaneous mordanting 60.6 4.1 20.3 20.7 78.4 29.4
 Post-mordanting 56.5 8.0 28.4 29.5 74.4 37.1
Pashmina fabric
 Without mordant 55.7 4.3 25.5 25.9 80.3 26.9
 Pre-mordanting 52.6 4.3 28.2 28.5 81.2 30.7
 Simultaneous mordanting 55.2 3.9 25.8 26.1 81.4 27.4
 Post-mordanting 37.2 5.2 18.9 19.6 74.5 43.8