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首页> 外文期刊>繊維学会誌 >Presence of Colorless Oxidation Dye Intermediates in Fiber in Oxidation Dyeing for Wool
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Presence of Colorless Oxidation Dye Intermediates in Fiber in Oxidation Dyeing for Wool

机译：羊毛氧化染色中纤维中无色氧化染料的存在

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摘要

In order to clarify whether the colorless oxidation dye intermediate mixture in the fiber is present, the time-course of K/S-λ curve of the wool fabric dyed for the different dyeing time with p-phenylenediamine (pPDA) alone, pPDA/ p-amino-o-cresol (pAOC) and pPDA/ resorcinol (RC) dyeing system was investigated by keeping them in a dark room at ambient temperature and humidity for 30 days. The dyeing was carried out using hydrogen peroxide as oxidant at pH 10 and 30℃ for 30 min. In the sample dyed with pPDA alone system and pPDA/pAOC couple system included ethylenediaminetetraacetic acid (EDTA) and ascorbic acid, the colorless oxidation dye intermediate mixture is scarcely substantive inside the fiber dyed for the different dyeing time,whereas in the sample dyed with pPDA/RC couple system included EDTA and ascorbic acid the presence of the colorless oxidation dye intermediate mixture within the fiber was confirmed. However, the time-course of K/S-λ curve of the wool fabric dyed with pPDA/RC couple system excluded EDTA and ascorbic acid indicated that there is no presence of the colorless oxidation dye intermediate mixture inside wool fibers. On taking all the results into consideration, we reached the conclusion that the oxidation dye intermediates presented inside the wool fiber are the colorless leucoindo dyes as a discrete entity. We concluded, furthermore, that the presented leucoindo dyes result from inhibiting the oxidative reaction of the leucoindo dyes by the anti-oxidative function of ascorbic acid, and deductively that, in the greater part of the precursor/coupler dyeing system, the oxidative reaction of the leucoindo dye occurred principally at the outside regions of fiber surface and the produced indo dye penetrated into the intercuticlar region of the wool fiber.
机译：为了弄清纤维中是否存在无色的氧化染料中间体混合物，单独用对苯二胺（pPDA），pPDA / p对不同染色时间染色的羊毛织物的K /S-λ曲线的时程对氨基-邻甲酚（pAOC）和pPDA /间苯二酚（RC）染色系统进行了研究，方法是将它们在环境温度和湿度下的暗室中放置30天。使用过氧化氢作为氧化剂在pH 10和30℃下进行染色30分钟。在单独使用pPDA系统和包含乙二胺四乙酸（EDTA）和抗坏血酸的pPDA / pAOC偶合系统染色的样品中，对于不同的染色时间，无色氧化染料中间混合物在染色的纤维内部几乎不具有实质性，而在用pPDA染色的样品中/ RC偶合系统包括EDTA和抗坏血酸，证实了纤维内无色氧化染料中间体混合物的存在。但是，用pPDA / RC偶合系统染色的羊毛织物的K /S-λ曲线随时间变化，但不包括EDTA和抗坏血酸，表明羊毛纤维内不存在无色的氧化染料中间混合物。综合考虑所有结果，我们得出的结论是，羊毛纤维内部存在的氧化染料中间体是无色的leucoindo染料，为离散实体。此外，我们得出的结论是，提出的无色染料是由于抗坏血酸的抗氧化功能抑制了无色染料的氧化反应而产生的，并且推断，在前体/偶合剂染色系统的较大部分中，无色染料主要发生在纤维表面的外部，而产生的染料渗透到羊毛纤维的皮间区域。

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  • 来源
    《繊維学会誌》 |2010年第5期|p.87-92|共6页
  • 作者

    Kyohei Joko; Yumi Yoshikatsu; Keiko Sakata;

  • 作者单位

    Kyoto Women's University, Kita-hiyoshi, Imakumano, Higashiyama-ku, Kyoto 605-8501, Japan;

    rnKyoto Women's University, Kita-hiyoshi, Imakumano, Higashiyama-ku, Kyoto 605-8501, Japan;

    rnKyoto Women's University, Kita-hiyoshi, Imakumano, Higashiyama-ku, Kyoto 605-8501, Japan;

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