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Laccase-mediated dye-free coloration of wool fabric

机译:漆酶介导的羊毛织物的无染料着色

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In this study, aninvestigation o nanovel coloring technique, based on laccase-mediated radical coupling of amino acid molecules of wool fibres, has been carried out. Firstly,the influence of temperature, incubation time, and pH on the K/S value and hue angle (h) of the colored wool fabrics is studied. Analysis of levelness of coloration, wash fastness, rubfastness, and UV-protection factor of the colored wool fabrics has been done. Then, the surface morphology and structure of the wool fibres are analyzed by scanning electron microscopy (SEM) and Fourier transform Infrared spectroscopy (FTIR). The enzymatic coloration processes are carried out in an acetate-sodium acetate buffer medium (pH 5) at 50°C for 24 h and the colored wool fabrics show good color fastness and uniformity. The results obtained areas per the requirements of textile color fastness. SEM study shows that no particles are adhered to the surface of the wool fibres. The results of FTIR and ultraviolet-visible spectroscopy show that the obvious oxidation coupling reactions take place between the molecules in the polypeptide chains of the wool.
机译:在这项研究中,已经进行了基于漆酶介导的羊毛纤维氨基酸分子的自由基偶联的纳米着色技术的研究。首先,研究了温度,孵育时间和pH值对有色羊毛织物的K / S值和色相角(h)的影响。已经完成了对有色羊毛织物的着色均匀度,耐洗牢度,耐摩擦牢度和紫外线防护因子的分析。然后,通过扫描电子显微镜(SEM)和傅里叶变换红外光谱(FTIR)分析羊毛纤维的表面形态和结构。酶法着色过程在乙酸盐-乙酸钠缓冲液(pH 5)中于50°C进行24小时,有色羊毛织物显示出良好的色牢度和均匀性。根据纺织品色牢度的要求获得结果。 SEM研究表明,没有颗粒粘附在羊毛纤维的表面上。 FTIR和紫外可见光谱的结果表明,羊毛的多肽链中的分子之间发生了明显的氧化偶联反应。

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