<研究報告>スオウ染めに関する基礎的研究(I) : スオウの発色に及ぼす各種植物灰および金属化合物の影響

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The results obtained through experiments are as follows. 1. The content of Brasilein and Blasilin extracted from soluble redwood is 0.48% and 2.89% respectively, and these colouring matters are actually extracted by the two times extraction with boiling water in the nearer percentage to the above. 2. The colouring in the case of soluble redwood is carried out mainly with Blasilin, and among plant ashes Akaza is most effective for the colouring of Blasilin. 3. When the colouring of Blasilin is carried out with plant ash, the colouring is relatively stable, but in the case of the colouring by metal compounds, the stability of colouring is divided as follows ; the stable colouring as is the case of alkali metal, the fading with the lapse of time as of alkaline earth metals, and the more colouring with the lapse of time as of aluminium or heavy metal. 4. At the dyeing with soluble redwood, it is recognized that Ca, Al and Fe ions are an essential factor to give " Shibusa" to dyed substrate. 5. In the case of plant ash as mordant, the more imperfect the incineration of plant the better is the effect for colouring, on the condition that the alkalinity of aqueous solution of plant ash is sufficiently to the colouring of Blasilin. 6. The colouring of Blasilin with Ca(OH)_2 is unstable, but it becomes stable when part of Ca(OH)_2 is converted into (CH_3COO)_2Ca by adding CH_3COOH.
福岡女子大学の論文
1966-03-25