Table 1 Average colour coordinates of different fabrics treated with Quercus robur L. (fruit cups) dye using Salix alba L. (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 | 68.2 | 3.4 | 28.6 | 28.8 | 83.1 | 24.7 |
 Simultaneous mordanting | 64.5 | 4.5 | 27.4 | 27.7 | 80.5 | 27.0 |
 Post-mordanting | 61.8 | 6.0 | 28.9 | 29.5 | 78.2 | 30.3 |
Cotton fabric | ||||||
Without mordant | 80.4 | 4.5 | 19.7 | 20.2 | 77.0 | 18.1 |
 Pre-mordanting | 84.6 | 3.0 | 16.1 | 16.4 | 79.0 | 12.6 |
 Simultaneous mordanting | 79.5 | 3.8 | 17.9 | 18.3 | 77.8 | 26.2 |
 Post-mordanting | 80.4 | 3.7 | 18.8 | 19.2 | 78.9 | 17.5 |
Silk fabric | ||||||
 Without mordant | 65.8 | 4.8 | 28.9 | 29.3 | 80.5 | 30.0 |
 Pre-mordanting | 68.0 | 7.4 | 25.6 | 26.7 | 73.8 | 26.2 |
 Simultaneous mordanting | 60.7 | 4.8 | 24.6 | 25.0 | 78.8 | 31.2 |
 Post-mordanting | 61.7 | 5.8 | 18.8 | 19.6 | 73.5 | 28.1 |
Pashmina fabric | ||||||
 Without mordant | 55.7 | 4.3 | 25.5 | 25.9 | 80.3 | 26.9 |
 Pre-mordanting | 60.4 | 7.2 | 29.4 | 30.2 | 76.2 | 24.9 |
 Simultaneous mordanting | 55.5 | 4.4 | 22.3 | 22.8 | 78.8 | 26.2 |
 Post-mordanting | 47.9 | 3.2 | 23.7 | 23.9 | 82.3 | 33.7 |