【作者】 郑春晓；

【导师】 韩光亭； 王秋美；

【作者基本信息】 青岛大学 ， 纺织工程， 2003， 硕士

【摘要】 天然彩棉纤维是一种最主要的生态纤维品种，它色泽自然，古朴典雅，质地柔软，富有弹性，穿着舒适。天然彩棉纤维具有天然的色彩，不需要经过传统的染色加工，纱布上不含有因染色加工残留的化学毒素，避免了染色过程中的环境污染问题。 但是彩棉作为一种农业作物，它在生长过程中会从空气、水、土壤中吸收某些有害重金属元素。由于这些有害重金属元素的存在，使得彩棉纤维不能够完全达到生态纺织品Oko—Tex Standard 100中对纺织品上可萃取重金属含量的要求。此外，彩棉作为一种天然有色棉，主要是绿色和棕色两种，但其颜色存在着不稳定的现象，受如PH值、温度、氧化剂、还原剂、金属离子等多种因素的影响，其中绿棉尤为严重，这也使得彩棉纤维在碱性皂洗条件和酸性汗渍条件下牢度不能达到国家标准。 本文采用络合的方法对彩棉中超标的重金属元素进行了去除，并得出了最优工艺，取得了良好效果。本文亦对彩棉的颜色进行了不同条件下的颜色稳定性实验，得出了在不同条件下，彩棉颜色的变化规律，另外还对北京服装学院于伯龄提出的利用金属盐对天然绿棉进行固色的方法进行了验证，指出了其不足之处，对彩棉的固色方法进行了初步探讨。更多还原

【Abstract】 The fiber of natural colored cotton is a main kind of ecological fiber. It has a natural and cultured color and a soft quality. It is full of flexibility, so it can give you a comfort feel. Because the fiber has a natural color, the fiber need not traditional dyeing, so that there is not any chemical toxin left in the fabric and the pollution in the dyeing can be avoided.But as a kind of farm crop, the colored cotton it would absorb some harmful heavy metals from the air, water, soil in the growth process. Because of the existence of harmful heavy metals, the fabric of the colored cotton can not arrive at the request of Oko-Tex Standard 100. In addition, as a natural colored cotton, this fiber mainly has two kind of color, green and brown. But its color is not steady. It will change with the PH, temperature, oxidant, reducer, metal ion, especially the green colored cotton. This makes the fastness of cotton fiber can’t attain the national standard under the alkaline soap and the acidity sweat wash.In this paper, the complexation method was used to wipe off the heavy metals whose contents exceed the standard. The best craft is chosen byexperiments to lead production. The influence of different conditions on thecolor of colored cotton is studied in this paper. The rule of the color change is drawn, that the color of green cotton will turn to red and blue under the acidity condition and turn to green and blue under the alkaline condition. The color of brown cotton will turn to yellow and green under the acidity condition and turn to yellow and red under the alkaline condition. Moreover, some experiments had been done to test the metals salt method for fixing the color of colored cotton written by Yu Boling. Some shortcomings were pointed out, and some new method of fixation had been brought up.更多还原