Study on optimizing the dyeing behavior of wool fabrics with henna dye by quadratic general rotary unitized design

In this paper,based on solubility of henna in different solvents,dyeing process of wool fabrics with henna pigment was studied,by means of three ways to extract henna pigment with 60℃ water.The optimal dyeing process conditions were determined in the quadratic general rotary unitized design.Three optimal dyeing process conditions were(88 ℃),47 min,pH value 3.9,(95 ℃),35 min,pH value 3.4,and(95 ℃),56 min,pH value 3.9,respectively.Under the same dyeing process conditions,the second extracted way obtained the maximum color depth.In the optimal dyeing process conditions,the post-mordant methods of wool fabrics using Al~(3+),Mg~(2+),Fe~(2+),Fe~(3+) were performed,and Fe~(3+) mordant showed the most obvious effect of mordant dyeing.