Bleaching Process Investigation of Tunisian Dromedary Hair

Table 2

Effectiveness of the dromedary hair bleaching process compared to that of wool for 30 min bleaching times with H₂O₂ concentration equals 6 g/L.

Fibre types	Process	Degree of whiteness^a	Yellowness index^b	Tenacity cN/tex^c
Dromedary hair	Untreated	51.05±1.2	36.15±0.9	18.18±1.8
	Bleached	78.54±0.7	23.75±0.6	14.17±2.5
Dark brown wool	Untreated	56.18±1.1	34.06±1.0	11.12±1.7
	Bleached	77.73±0.4	29.73±0.6	9.95±1.6

aAs per ASTM E-313; mean value of 3 samples ± standard deviation, each sample having 8 measurements. ^bAs per ASTM D-1925; mean value of 3 samples ± standard deviation, each sample having 8 measurements. ^cAs per NF G 07 307; mean value of 3 samples ± standard deviation, each sample having 10 measurements.