Statistical Optimization of Parameters for Eco-Friendly Dyeing of Cotton Using Direct Red 31 Dye

ABSTRACT

Effluent load produced by synthesis and application of synthetic dyes has led global community to empty sustainable tools during textile processing. Current study is the application of ultrasonic treatment for fabric pre-treated before desizing, before bleaching and before mercerization followed by dyeing using Direct Red 31 dye. It has been found that ultrasonic treatment to bleached fabric for 45 min has given high color strength using direct dye. FTIR analysis shows that US did not cause any chemical change but modify the surface of bleached fabric to make it more substantive for dye. Response surface methodology was employed for the optimization of dyeing conditions to make coloring process more sustainable under mild conditions. The statistical analysis reveals that under reduced optimal conditions shade made has not only show improvement in colorfastness rating but also enhanced the sustainability of fabric to uptake dye to much extend.

摘要

合成染料的合成和应用所产生的废水负荷已导致全球社会在纺织加工过程中清空可持续的工具. 对退浆前、漂白前、丝光前、直接红31染料染色前预处理的织物进行超声波处理. 对漂白织物进行超声波处理45min. 用直接染料使其具有很高的颜色强度. FTIR分析表明，US对漂白织物表面没有引起任何化学变化，但对漂白织物表面进行了改性，使其对染料更具实质性. 采用响应面法优化染色条件，使染色过程在温和条件下更具可持续性. 统计分析表明，在较低的最佳条件下，色光不仅提高了织物的染色牢度，而且在很大程度上提高了织物上染的可持续性.

关键词:

• 棉花
• 直接红
• 染料
• 响应面法
• 超声波辐射

KEYWORDS:

• Cotton
• Direct Red 31 dye
• response surface methodology
• ultrasonic radiation

Acknowledgments

We are thankful to Mr. Zafar Iqbal Manager Noor Fatima Fabrics Faisalabad Pakistan and Mr. Muhammad Abbas Chief Executive Harris Dyes and Chemicals Faisalabad Pakistan for providing us the technical guidance at lab scale for smooth running of M.Phil. Studies. We are also thankful to Govt. College University Faisalabad for funding research project (GCUF-RSP Project No. 9/ACH-9) under scheme of Research Support Programme

Additional information

Funding

This work was supported by the Govt. College University Faisalabad Pakistan under scheme of Research Support Programme [(GCUF-RSP Project No. 9/ACH-9)].