Scope of Sustainable Pretreatment of Cotton Knit Fabric Avoiding Major Chemicals

ABSTRACT

The present effort attempted to avoid basic chemicals, namely NaOH and H₂O₂ in scouring and bleaching of cotton knit fabric in order to reduce the chemical load and processing cycles without compromise of dyeing performance. Single jersey single lacoste cotton knit fabrics treated with detergent and wetting agent at 120°C temperature for 20 minutes revealed 5.8% weight loss. FTIR graphical data validated the weakening and moving out of characteristic bands of wax and pectin-based cotton impurities in the region of 1740–1200 cm⁻¹. The color differences of 1.5% and 1% dyed samples confirmed pass value (CMC ΔE ≤ 1) when treated at 105°C temperature for 20 minutes. The grading for color fastness to wash, perspiration, rubbing and light was 4–5 to 5. No deterioration in strength and morphological changes were experienced for the treated samples.

摘要

本文试图在棉针织物的精练和漂白中避免使用碱性化学品，即NaOH和H₂O₂，以便在不影响染色性能的情况下减少化学负荷和加工周期。在120℃温度下用20分钟清洗剂和润湿剂处理的单面羊毛织物织物针织物针织物织物织物针织物的织造织物织物针织物针织物的织造织物针织物针织物针织物针织物针织物织物针织物针织物的织造织物针织物针织物的外观质量为5.8%。红外光谱图解数据验证了1740-1200cm⁻¹ 范围内蜡基和果胶基棉类杂质的弱化和特征带外移。经105℃处理20min后,1.5%和1%染色样品的色差符合合格值(CMCΔE≤1),耐洗、耐汗、耐摩擦、耐光色牢度等级为4～5～5。在处理的样品中没有经历强度和形态变化的劣化。

KEYWORDS:

• Scouring and bleaching without NaOH and H₂O₂
• 105°C temperature
• 20 min duration
• CMC ∆E
• color fastness
• cotton

关键词:

• 关键词
• 无NaOH和H2O2的练漂
• 105°C温度
• 20分钟持续时间
• 色牢度
• 棉花

Acknowledgments

Although the work was conducted without any source of funding, still we acknowledge the wet processing laboratory of DUET (Dhaka University of Engineering & Technology) and also the laboratories of CARS (Centre for Advanced Research in Sciences) of University of Dhaka for distinguished experimental support.