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Relative concentration of C1s components for silk fabric dyed with plant extracts.
| Sample | Relative chemical bond area Cls (%) | ||
|---|---|---|---|
| C−C (284.6 eV) | C−O C−N (286.2 eV) | C=O (287.7 eV) | |
| Turmeric | 67.22 | 23.28 | 9.51 |
| Indigo | 69.55 | 18.08 | 12.37 |
| Sappanwood | 69.92 | 20.32 | 9.76 |
| Gromwell | 73.10 | 17.73 | 9.17 |
| Quercetin | 65.17 | 24.26 | 10.58 |
