Wettability and Colors Changes of Sulfur Black Dyed Cellulosic Materials after New Ecological Washing Treatment: Experimental Study and Empirical Models

ABSTRACT

The objective of this research was to use the hydrogen peroxide as eco-friendly washing product to achieve a fading effect by creating a desirable gray vintage-look on sulfur black-dyed jean fabric. Visual appearance and colorimetric study using spectrophotometer showed that only the new two-steps process developed in this study helps to get the desirable look appearance with a good fastness. The (K/S)_sum value of the two-steps process washed fabric decreased significantly (23.9% and 38.1% for washing at 80°C and 95°C, respectively). The SEM photos indicated that the physical properties of the cotton fibers are changed by effect of the peroxide hydrogen washing two-steps process. Indeed, a part of the cuticle is removed and the natural twists is disappeared with a specific tendency to fibrillation causing roughness and chemical heterogeneity of the fabric surface. The surface wettability of the two-steps process washed fabric was deeply changed as estimated by the initial contact angle values, the droplet spreading, the absorbency kinetics, and the total processing time of spreading.

抽象的

本研究的目的是使用过氧化氢作为环保洗涤产品, 通过在硫黑色染色牛仔布上创造理想的灰色复古外观来实现褪色效果. 使用分光光度计进行的视觉外观和比色研究表明, 只有本研究开发的新两步工艺才有助于获得理想的外观和良好的牢度. 两步法洗涤织物的 (K/S) 和值显著下降 (80°C和95°C洗涤分别为23.9%和38.1%) . 扫描电镜照片表明, 过氧化氢-过氧化氢两步法对棉纤维的物理性能有影响. 事实上, 部分角质层被去除, 自然扭曲消失, 并有特定的纤维化趋势, 导致织物表面粗糙和化学不均匀. 通过初始接触角值, 液滴扩散, 吸收性动力学和总扩散处理时间的估计, 两步法水洗织物的表面润湿性发生了深刻的变化.

KEYWORDS:

• Sulfur dye
• Two-steps washing process
• color strength
• contact angle
• surface wettability
• TE and OTE kinetic models

关键词:

• 硫染料
• 两步洗涤工艺
• 颜色强度
• 接触角
• 表面润湿性
• TE和OTE动力学模型

Highlights

• A new ecological washing treatment to achieve a fading effect on sulphur black-dyed jean is proposed.

• Multiple techniques are used to study the effect of the new washing process on the physico-chemical properties of the jean.

• The physical properties (cuticle structure, natural twists of cotton fibers and roughness of the fabric surface) and the surface wettability of the jean washed using the new process are changed.

• TE and OTE Mathematical models describing the effects of washing treatments on fabric surface wettability are proposed.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This project is carried out under the MOBIDOC system, funded by the EU through the EMORI program and managed by the ANPR.