Study on Complex Dyeing of Bio-based Polyamide 11 Fibers in Ethanol

IF 4.7 3区工程技术 Q2 ENGINEERING, ENVIRONMENTAL

Journal of Polymers and the Environment Pub Date : 2025-03-20 DOI:10.1007/s10924-025-03554-z

Kaijun He, Guanpeng Zhou, Yanyan Li, Jiajia Shen

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引用次数: 0

Abstract

Polyamide 11 (PA11) is a novel type of 100% bio-based and renewable fiber which can not achieve good dyeing results for conventional water bath dyeing techniques due to its smooth surface and long carbon chain hydrophobic structure. Furthermore, conventional dyeing processes typically involve extensive use of water and chemical reagents, driving up production costs and exerting serious ecological damage. The development of a new dyeing method suitable for bio-based PA11 fibers is crucial for sustainable development in the textile industry. In this study, we present a novel method for achieving effective dyeing of bio-based PA11 fibers using only dyes, calcium chloride (CaCl₂), and recyclable ethanol (EtOH), eliminating the necessity for additional chemical reagents. The dyeing process operates at a reduced temperature (80 ℃) and bypasses the pre-treatment stage for PA11. Compared to the traditional aqueous dyeing, the novel method significantly enhances dye uptake (> 98%) and color depth (K/S value) of PA11, while maintaining comparable color fastness ( ≧ grades 3–4), and acceptable mechanical properties. In addition, the new dyeing method has minimal impacts on the structure and performance of bio-based PA11 fibers. This is of great significance for the development and application of bio-based PA11 in the field of chemical fibers.

Graphical abstract

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生物基聚酰胺11纤维乙醇复合染色的研究

聚酰胺11 （PA11）是一种新型的100%生物基可再生纤维，由于其表面光滑和长碳链疏水结构，传统水浴染色技术无法达到良好的染色效果。此外，传统的染色工艺通常涉及大量使用水和化学试剂，提高了生产成本，并造成严重的生态破坏。开发一种适用于生物基PA11纤维的新型染色方法对纺织工业的可持续发展至关重要。在这项研究中，我们提出了一种新的方法，仅使用染料、氯化钙（CaCl2）和可回收乙醇（EtOH）就可以实现生物基PA11纤维的有效染色，而不需要额外的化学试剂。染色过程在降低温度（80℃）下进行，并绕过PA11的预处理阶段。与传统的水染色相比，新方法显著提高了PA11的染料吸收率（> 98%）和色深（K/S值），同时保持了相当的色牢度（≧3-4级）和可接受的机械性能。此外，新的染色方法对生物基PA11纤维的结构和性能影响最小。这对生物基PA11在化纤领域的开发和应用具有重要意义。图形抽象

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来源期刊

Journal of Polymers and the Environment 工程技术-高分子科学

CiteScore

9.50

自引率

7.50%

发文量

297

审稿时长

9 months

期刊介绍： The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.