Dyeing Behavior and Characterization of Recycled Cotton and Chitosan Blended Fabrics

ABSTRACT

The cultivation and wet processing of cotton is very harmful to the environment. Recycling of cotton is an important way to reduce its environmental impact. For this purpose, recycled cotton by using it in a mixture with chitosan yarns and the dyeing behavior of fabrics produced from this blend were examined within the scope of sustainable production. Among the reactive, direct and acid dyeings, the highest color depths were obtained from dyeing with direct dye in alkaline medium and in the presence of salt. It was observed that the dyeing temperature was important for leveling dyeing. The fastness results of reactive dyeing were higher than the others. The FTIR analysis interpreted as that polyester might have been mixed during processing into recycled cotton and the presence of chitosan in the blend could be indicated by decreasing band intensities compared to cotton. The SEM images supported the presence of chitosan in the blended fabric. According to the TGA results, the change in temperature at which the maximum weight loss was observed in the blended fabric approached to that of chitosan. The results showed that chitosan and cotton obtained from recycling could be used as a mixture instead of cotton.

Graphical abstract

摘要

棉花的种植和湿法加工对环境危害很大. 棉花的回收利用是减少其环境影响的重要途径. 为此, 在可持续生产的范围内, 研究了将其与壳聚糖纱线混合使用的再生棉以及由此混合生产的织物的染色性能. 在活性染料、直接染料和酸性染料中, 在碱性介质和盐存在下用直接染料染色可获得最高的颜色深度. 观察到染色温度对匀染很重要. 活性染料染色的牢度结果高于其他染料. FTIR分析解释为, 聚酯可能在加工成再生棉的过程中混合, 与棉相比, 共混物中存在的壳聚糖可以通过降低条带强度来指示. SEM图像支持壳聚糖在混纺织物中的存在. 根据TGA结果, 在共混织物中观察到的最大失重温度变化接近壳聚糖. 结果表明, 回收的壳聚糖和棉花可以代替棉花作为混合物使用.

KEYWORDS:

• Sustainability
• environmentally friendly
• colorimetry
• SEM
• FTIR
• TGA

关键词:

• 持续性
• 环境友好型
• 色度学

Highlights

In order to contribute to sustainable textile production, to improve the properties of recycled cotton and to add extra properties to this fiber, the characterization and conventional dyeing behavior of the material obtained by using recycled cotton in mixture with chitosan yarn were examined.

*Higher color strength was obtained from reactive dyeing of blended fabric compared to dyeing of cotton alone.

*Color strength close to that of salt-containing medium was obtained from dyeing in salt-free and alkaline medium with reactive dye.

*It was observed that the mixed fabrics were dyed with acid dyeing even if low color strength was obtained.

*It turned out that fiber composition analysis is important in recycled fiber.

*Since there is no study on the treatment of recycled cotton+chitosan blended fiber in the literature, this study is expected to shed light on other studies on this subject.

Disclosure statement

No potential conflict of interest was reported by the authors.

Correction Statement

This article has been corrected with minor changes. These changes do not impact the academic content of the article.