Eco-Friendly Pretreatment and Dyeing of Cotton with Vat Yellow 46

ABSTRACT

Sustainable energy tools are nowadays giving popularity in all the fields particularly in textiles due to their effective mode of action. The current study has been aimed to apply these tools (ultrasonic and microwave) for fabric treatment followed by vat dyeing using vat yellow 46 dye. Ultrasonic heating up to 60 and microwave up to 6 min were employed before and after the fabric treatment process. Various dyeing parameters were optimized as per ISO standards. Color characteristics of dyed fabric were assessed. It is found that microwave treatment of 4 min should be given to bleached fabric for vat dyeing with non-radiated dye solution (NRS), whereas ultrasonic treatment of 40 min should be given to bleached fabric for vat dyeing with non-radiated dye solution (NRS) and irradiated cotton (RC) fabrics. FTIR analysis reveals that there is no chemical change in the functional peak of cellulosic before and after ultrasonic and microwave treatment was found. It is concluded that these sustainable tools have not only reduced time cost and labor but also improve the vat dyeing process.

摘要

可持续能源工具由于其有效的作用方式, 目前在所有领域都很受欢迎, 特别是在纺织品领域. 目前的研究旨在将这些工具 (超声波和微波) 应用于织物处理, 然后使用还原黄46染料进行还原染色. 在织物处理过程前后, 采用了高达60分钟的超声波加热和高达6分钟的微波加热. 根据ISO标准对各种染色参数进行了优化. 对染色织物的颜色特性进行了评价. 研究发现, 对于非辐射染料溶液 (NRS) 还原染色的漂白织物, 应进行4分钟的微波处理, 而对于非辐射染料溶液 (NRS) 还原染色的漂白织物和辐照棉 (RC) 织物, 应进行40分钟的超声波处理. FTIR分析表明, 超声波和微波处理前后纤维素的功能峰没有化学变化. 结论是, 这些可持续的工具不仅降低了时间成本和劳动力, 而且改善了还原染料染色工艺.

KEYWORDS:

• Cotton
• microwave radiation
• sustainability
• ultrasonic radiation
• vat yellow 46

关键词:

• 棉
• 微波辐射
• 持续性
• 超声辐射
• 还原黄46

Highlights

1. Microwave and ultrasonic irradiation have been used for dyeing of cotton fabric by using vat yellow 46.

2. MW treatment for 4 min and US treatment for 40 min for bleached fabric followed by dyeing with Vat Yellow 46 dye gives good color yield.

3. Optimization of various dyeing parameters as per ISO standards.

4. Irradiation treatment has enhanced the fastness rating as compared to without irradiation.

Acknowledgments

The authors are highly thankful to the Higher Education Commission of Pakistan for proving us funding under their program via Project (HEC- No. 20-2724/NRPU/R7D/HEC/12/6828). We are also thankful to Mr. Zafar Iqbal, quality control manager of Noor Fatima Fabrics Faisalabad, Pakistan for providing chemicals and Lab support, and Mr. Muhammad Abbas Director Harris Dyes and Chemical for their technical cooperation to conduct research work at the Industrial lab scale level.

Disclosure statement

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