The Use of Ozone Technology for Color Stripping and Obtaining Vintage Effect on Reactive Dyed Cotton Fabrics

ABSTRACT

Today, innovative productions have gained great importance to meet customer expectations. In this study, color stripping in reactive dyed knitted cotton fabrics with ozone technology was investigated. Furthermore, it was also aimed to obtain vintage effect by fading the color with the ozonation process. For this purpose, fabrics were dyed into three primer colors, namely yellow, red and blue, and also black color, then they were subjected to ozonation at different durations and the resulting stripping efficiency was evaluated in comparison with conventional caustic-hydrosulfite stripping method. From the color fading values (%), it is possible to say that yellow is the hardest and blue is the easiest to fade among the three primer colors. It was observed that as the ozonation time increased, the color lightened, but the actual fading occurred within the first 15 minutes, after which the change in color was smaller. Besides, it has been shown that if the ozonation is done for a very short time such as 5 minutes on reactive dyed fabrics, the vintage effect can be obtained. On the other hand, color stripping can be achieved as an alternative to caustic-hydrosulfite treatment, if the ozonation is performed for 15 minutes or longer.

摘要

今天，创新产品在满足客户期望方面变得非常重要。研究了臭氧技术在活性染料针织棉织物脱色中的应用. 此外，还旨在通过臭氧氧化过程褪色来获得复古效果. 为此，将织物染成黄色、红色、蓝色和黑色三种底色，然后在不同时间进行臭氧氧化处理，并与传统的苛性钠-氢亚硫酸盐反萃法进行了比较. 从褪色值（%）可以看出，在三种底漆颜色中，黄色最难褪色，蓝色最容易褪色. 结果表明，随着臭氧氧化时间的增加，颜色变浅，但实际褪色发生在前15分钟内，之后颜色变化较小. 此外，对活性染料织物进行臭氧氧化处理，只要时间很短，如5min，就可以达到复古效果. 另一方面，如果进行15分钟或更长时间的臭氧氧化，则可以作为碱性亚硫酸氢钠处理的替代方法来实现颜色剥离.

KEYWORDS:

• Ozone
• reactive dye
• cotton
• color fading
• vintage effect
• color stripping

关键词::

• 臭氧
• 活性染料
• 棉花
• 褪色
• 复古效应
• 色带