چکیده (انگلیسی):

We report comparative studies between mordant (with alum or tannin) and alkaline dyeing of wool fiber with dyes from the Rubia tinctorum plant. Mordant dyeing was achieved by using boiling extract of R. tinctorum, and alkaline dyeing was achieved at pH 10 with alizarin extract of R. tinctorum. The alkaline process was used with and without Argan’s pulp as a reducer. The fixation rate was higher in the alkaline dyeing process when a reducer was used, and the washing fastness was higher in the alkaline dyeing process with acidification post treatment. In mordant dyeing, tannin provide a greater fixation rate than alum.