Research Article
Bleaching Process Investigation of Tunisian Dromedary Hair
Table 1
Experimental conditions of depigmentation process for different fibres samples.
| Mordanting | Rinsing | Bleaching | Rinsing |
| FeSO4: 2 g/L Na2S2O4: 1 g/L HCHO (35–40%): 3 g/L L.R.: 1 : 20 pH(HCO2H): 4 Temperature: 75°C Time: 60 min | Cold water Neutralisation with NH4OH pH: 11 Temperature: 45°C Time: 5 min | Na4P2O7 · 5H2O: 4 g/L EDTA: 2 g/L H2O2 35%: 3–9 g/L L.R.: 1 : 20 pH: 9 Temperature: 75°C Time: 20-30-45-60 min | Pure water Or Oxalic acid: 7 g/L Na2CO3: 8.5 g/L pH: 11 Temperature: 50°C Time: 5 min |
|
|