藍の生葉染めにおける絹の赤紫染色の条件

概要

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Silk fabrics were dyed in an extract of fresh leaves of the Japanese indigo plant, Polygonum tinctorium Lour, under various conditions. After dyeing, the dyes on the fabrics were extracted with dimethylsufoxide. HPLC analysis of the extract indicated the presence of indigo(blue dye)and indirubin(crimson dye)in the dyed fabrics. The rations of the amount of indirubin(M_ir)to that of indigo(M_in)in the dyed fabrics were determined for the dyed specimens. The relationship between M_ir/M_in and dyeing conditions was discussed. The favourable conditions for dyeing silk fabrics a red-purple shade are as follow : 1)the presence of 20-30% ethanol in the dyeing solution, 2)the pretreatment of the silk fabrics with alkaline such as sodium carbonate aq. solution, 3)a relatively high dyeing temperature. (Received March 13, 1998 ; Accepted in revised form July 8, 1998)
社団法人日本家政学会の論文
1998-09-15