天然染料等同体—茜素的染色试验

用合成茜素（C.I.58000，媒染红11）对羊毛、丝绸、棉布、涤纶、尼龙6和66、维尼纶、腈纶、醋酯纤维等织物进行直接染色及媒染染色，以及对涤纶、维尼腈纶、醋酯纤维织物进行热转移印花试验。茜素的结构等特征及IOB值计算和染色试验结果证明，茜素是典型的分散染料，直接染合成纤维效果较好；而染羊毛、丝绸和棉布则是典型的媒染染料，其染样皂洗变色问题通过预皂洗方法基本解决。

Dyeing Tests with Nature-Identical Color-Alizarin

The wool, silk, cotton, nylon, polyethylene terephthalate, polyacrylonitrile, polyvinyl alcohol and acetate fibers were dyed with the nature-identical color -alizarin using direct and mordant dyeing methods, as well as the man-made fibers using transfer printing. The structure, IOB(Inorganic and Organic Balance)and the dyeing result of alizarin verified that alizarin was a typical disperse dye, direct dyeing process was suitable for man-made fibers, while the mordant dyeing was for wool, silk and cotton fibers. The presoaping method can solve the shade change in soaping of the dyed product.