酸化系漂白剤の漂白作用に関する研究(第2報) : 含金属染料染色物の過炭酸塩漂白における劣化ならびに変退色の防止に対するタンニン酸の防止効果

概要

論文の詳細を見る
Preventing effect of tannic acid on the degradation and decolorizaing of the fabrics dyed with metalized (Cu) dye in bleaching process by sodium percarbonate was studied. The results obtained is that the rate of degradation and decolorization of the dyed fabric pretreated with tannic acid in bleaching process is retarded, compared with control fabric. And it was assumed that a copper chelated with the dye was not extracted from dyed fabric by tannic acid, because the hue of fabric treated with tannic acid was hardly changed. The interaction between the tannic acid and a copper was investigated in the observation by a scanning electron microscopy and in the measurement of spectroscopy in further details. According to these measurements, it was presumed that tannic acid was complexed with a copper absorbing in fabrics. This effect results in a retarded rate of decomposition of bleaching agent sufficiently. Consequently, it was found that the rate of degradation and decolorization of the fabric in bleaching process are retarded satisfactorily by the dyed fabric treated with the treatment of a tannic acid.
福岡女子大学の論文
1985-12-25