A supercritical carbon dioxide dyeing strategy for polyester/cotton blended fabrics with excellent dyeing performance

IF 4.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL

Journal of Supercritical Fluids Pub Date : 2025-07-23 DOI:10.1016/j.supflu.2025.106726

Hongjuan Zhao , Yu Wang , Qian Zhao , Xiaoqing Xiong

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引用次数: 0

Abstract

Supercritical carbon dioxide dyeing technique offers a promising solution to the challenges of environmental issues in dyeing polyester/cotton blended fabrics, but they have yet to achieve excellent dyeing performance. In this study, a novel dyeing strategy for polyester/cotton blended fabrics was developed by optimizing the action mode of dye molecules on fiber substrates in supercritical carbon dioxide, thereby addressing the problem of poor dyeing performances associated with supercritical carbon dioxide dyeing techniques. The dyed polyester/cotton blended fabrics exhibit deep and uniform coloring (RUI values ranging from 0.021 to 0.056), excellent washing and rubbing fastness (average grades of 4–5), and a wide range of color options. In addition, this dyeing strategy retains excellent environmental performance of supercritical carbon dioxide dyeing technique, with a theoretical energy consumption of only 5 MJ per kilogram of dyed fabrics and an E factor as low as 0.057. Its environmental performance significantly outperforms existing dyeing techniques, such as two-step dyeing, one-step exhaust dyeing, one-step pad dyeing, and D5 dyeing, offering a viable and eco-friendly alternative for the industrial dyeing of T/C blended fabrics.

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涤纶/棉混纺织物超临界二氧化碳染色工艺研究

超临界二氧化碳染色技术为涤棉混纺织物染色的环境问题提供了一种很有前景的解决方案，但目前还没有达到优异的染色性能。本研究通过优化超临界二氧化碳条件下染料分子在纤维基体上的作用模式，开发了一种新的涤棉混纺织物染色策略，从而解决了超临界二氧化碳染色技术染色性能差的问题。涤棉混纺染色织物色泽深而均匀（RUI值范围为0.021至0.056），耐洗耐磨牢度极佳（平均等级为4-5），颜色选择范围广。此外，该染色策略保留了超临界二氧化碳染色技术优异的环保性能，每公斤染色织物的理论能耗仅为5 MJ， E因子低至0.057。其环保性能明显优于现有的两步染色、一步排气染色、一步轧染、D5染色等染色技术，为涤棉混纺织物的工业染色提供了可行的环保选择。

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来源期刊

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.