タンニン酸定着処理した野蚕絹糸の酸性染料による染色挙動
1993 年 49 巻 8 号 p. 444-447
詳細
1993 年 49 巻 8 号 p. 444-447
Silk fibers (Antheraea pen_??_yi and Bombyx mori), which were treated with a tannic acid solution and then with aluminum chloride, were dyed with acid dyes (C. I. Acid Orange 7 and Red 111). The change in the amount of adsorbed dye with those in the tannic acid content in the fiber and in the pH value of dye bath showed that tannic acid did not interact with amino end groups when fixed with aluminum chloride. A maximum of the dye adsorption was found in the dyeing of wild silk fibers to which tannic acid was fixed (2%). The small angle X-ray scattering intensity was increased due to the fixation of tannic acid to the fiber. The increase in micro-voids in the fiber seemed to cause the maximum in the dye adsorption.
