Ultrasonic assisted improved dyeing of cellulosic fabric using Vat Blue 4

ABSTRACT

The need for eco-friendly tool in textile processing is the major concern of consumers and traders. The current study is aimed to use ultrasonic radiation for improvement of Vat dyeing of cellulosic fibers using Vat Blue 4. For this purpose, both fabric and dye solutions were ultrasonically treated for 15–60 min at variable dyeing conditions. Dyeing has been performed onto irradiated and un-irradiated fabrics using irradiated and un-irradiated dye solutions. It is found that good color characteristics are obtained if un-irradiated fabric is dyed at 55 C for 60 min using 50 mL of neutral dye bath. For optimization of vat dyeing conditions, 2.5 mL of sodium dithionite, 2 mL of acetic acid and 2 mL of hydrogen peroxide at redox conditions have been optimized. Organization of International Standards (ISO) standard methods employed onto variable shades for colorfastness show that the Ultrasonic treatment has improved the rating of color characteristics. It is concluded that the Ultrasonic treatment has been proved as a cost- and time-effective tool for Vat dyeing of cellulosic fabric under mild conditions.

摘要

在纺织加工中，环保工具的需求是消费者和贸易商的主要关切。目前的研究目的是利用超声辐射，利用还原蓝4改善纤维素纤维的还原染料染色。为此，织物和染料溶液超声处理15-60分钟变染色条件。用辐照和未经辐照的染料溶液对辐照和未经辐照的织物进行染色。发现好的颜色特征已如果未辐照染色在55°C 60分钟，用50毫升中性染浴中获得。发展的瓮，连二亚硫酸钠2.5mL，2ml乙酸2ml过氧化氢作为氧化还原条件已经优化。ISO标准方法上不同色牢度表明美国处理改善了颜色特征的评价。结论：证明了美国治疗成本和时间在温和的条件下，纤维素纤维织物染色的有效工具。

KEYWORDS:

• Cellulosic fabric
• colorfastness
• dyeing
• fastness properties
• ultrasonic radiation
• Vat Blue 4

关键词:

• 色牢度
• 纤维素纤维织物
• 染色
• 耐热性能
• 超声辐射
• 还原蓝4

Acknowlegment

We are also thankful to Mr. Zafar Iqbal, Manager, Noor Fatima Textiles, Faisalabad and Mr. Muhammad Abbas, Director, Harris Dyes and Chemicals, Faisalabad for their technical cooperation in this work at laboratory and industrial level.

Additional information

Funding

This work was supported by the Higher Education Commission, Pakistan [(No. 20-2724/NRPU/R & D/HEC/12-6828).].