Coagulation engineering of surfactant-based wet spinning of carbon nanotube fibers

IF 5.5 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Carbon Letters Pub Date : 2024-04-25 DOI:10.1007/s42823-024-00735-z

Yun Ho Jeong, Jaegyun Im, Dong-Myeong Lee, Min Chan Kim, Daehan Oh, Jeonghyeon Son, Seunggyu Park, Kyu Hyun, Beomjin Jeong, Jaegeun Lee

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Abstract

One of the key challenges for the commercialization of carbon nanotube fibers (CNTFs) is their large-scale economic production. Among CNTF spinning methods, surfactant-based wet spinning is one of the promising techniques for mass producing CNTFs. Here, we investigated how the coagulation bath composition affects the spinnability and the properties of CNTFs in surfactant-based wet spinning. We used acetone, DMAc, ethanol, and IPA as coagulants and analyzed the relationship between coagulation bath composition and the properties of CNTFs in terms of kinetic and thermodynamic coagulation parameters. From a kinetic perspective, we found that a low mass transfer rate difference (MTRD) is favorable for wet spinning. Based on this finding, we mixed the coagulant bath with solvent in a proper ratio to reduce the MTRD, which generally improved the wet spinning. We also showed that the coagulation strength, a thermodynamic parameter, should be considered. We believe that our research can contribute to establishment of surfactant-based wet spinning of CNTFs.

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基于表面活性剂的碳纳米管纤维湿法纺丝凝固工程

碳纳米管纤维（CNTF）商业化的关键挑战之一是其大规模经济生产。在 CNTF 纺丝方法中，基于表面活性剂的湿法纺丝是有希望大规模生产 CNTF 的技术之一。在此，我们研究了凝固浴成分如何影响基于表面活性剂的湿法纺丝中 CNTF 的可纺性和性能。我们使用丙酮、DMAc、乙醇和 IPA 作为凝固剂，并从动力学和热力学凝固参数方面分析了凝固浴成分与 CNTF 特性之间的关系。从动力学角度来看，我们发现低传质速率差（MTRD）有利于湿法纺丝。基于这一发现，我们将混凝剂浴与溶剂按适当比例混合，以降低 MTRD，从而普遍改善了湿法纺丝。我们还发现，凝固强度这一热力学参数也应考虑在内。我们相信，我们的研究能为建立基于表面活性剂的 CNTF 湿法纺丝技术做出贡献。

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来源期刊

Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.30

自引率

20.00%

发文量

118

期刊介绍： Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.