用纺丝整理剂防止木质素-纤维素前驱体和碳纤维的纤维粘连

IF 2.2 3区 农林科学 Q2 FORESTRY Holzforschung Pub Date : 2023-06-20 DOI:10.1515/hf-2023-0023
J. Bengtsson, Andreas Bengtsson, Hanna Ulmefors, Maria Sedin, Kerstin Jedvert
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引用次数: 0

摘要

纤维在纺丝束内的粘附,包括碳纤维和前体,是不希望的,因为它可能会中断制造过程并导致纤维性能下降。在这项工作中,将软木硫酸盐木质素与溶解纸浆一起用于纺丝碳纤维前体。以前发现木质素-纤维素前体在纺丝后和碳纤维转化过程中都容易发生纤维融合。在这项研究中,应用不同种类的纺丝整理剂的效率,相对于呈现可分离前驱体和碳纤维,已经进行了研究。结果表明,阳离子表面活性剂和非离子表面活性剂均可使木质素-纤维素前体束分离良好。此外,对碳纤维转化后的纤维可分离性进行了评估,值得注意的是,用硅基自旋整理剂处理的前驱体产生了分离性最好的碳纤维。讨论了纺丝后纤维与转化碳纤维融合的基本机理。
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Preventing fiber–fiber adhesion of lignin–cellulose precursors and carbon fibers with spin finish application
Abstract Adhesion of fibers within a spun tow, including carbon fibers and precursors, is undesirable as it may interrupt the manufacturing process and entail inferior fiber properties. In this work, softwood kraft lignin was used together with a dissolving pulp to spin carbon fiber precursors. Lignin–cellulose precursors have previously been found to be prone to fiber fusion, both post-spinning and during carbon fiber conversion. In this study, the efficiency of applying different kinds of spin finishes, with respect to rendering separable precursors and carbon fibers, has been investigated. It was found that applying a cationic surfactant, and to a similar extent a nonionic surfactant, resulted in well separated lignin–cellulose precursor tows. Furthermore, the fiber separability after carbon fiber conversion was evaluated, and notably, precursors treated with a silicone-based spin finish generated the most well-separated carbon fibers. The underlying mechanism of fiber fusion post-spinning and converted carbon fibers is discussed.
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来源期刊
Holzforschung
Holzforschung 工程技术-材料科学:纸与木材
CiteScore
4.60
自引率
4.20%
发文量
83
审稿时长
3.3 months
期刊介绍: Holzforschung is an international scholarly journal that publishes cutting-edge research on the biology, chemistry, physics and technology of wood and wood components. High quality papers about biotechnology and tree genetics are also welcome. Rated year after year as one of the top scientific journals in the category of Pulp and Paper (ISI Journal Citation Index), Holzforschung represents innovative, high quality basic and applied research. The German title reflects the journal''s origins in a long scientific tradition, but all articles are published in English to stimulate and promote cooperation between experts all over the world. Ahead-of-print publishing ensures fastest possible knowledge transfer.
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