紅花の染色特性

Dyeing properties of the safflower


野田隆弘
Takahiro NODA

Abstract

　In a boiling state in the general dyeing with vegetable dyes, dyeing is carried out in a boiling state, after having extracted the pigment of the trees and plants t in a boiling state. However, you can dye cloth at room temperature without heating when you dye cloth with a safflower or an indigo. Therefore, a safflower can be is dyeing stuffs of the energy- saving type. In this report I reported on dyeing properties when I dyed cloth with a safflower. First yellow pigment, safflor yellow , was extracted . Next you can get red pigment, carthamin, after adding alkali, and neutraliz- ing with acid. I used this red pigment as dyeing stuffs. I evaluated two kinds of alkali, two kinds of acid, dyeing result in four ways in total in this study.. The dyeing result was indicated as lightness. I used this value and evaluated it with color difference. Even in the case of each alkali, acid, both got about the same dyeing result. Silk and wool of the animal fiber, and cotton of the vegetable fiber were dyed well. The result showed that the colorfastness to light was not able to get a high evaluation like cloth of the normal dyeing with vegetable dyes.

Keywords : safflower, safflor yellow, carthamin, dyeing, lightness