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 |