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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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This work was supported by 2022 BK21 FOUR Graduate School Innovation Support funded by Pusan National University (PNU-Fellowship program). This work was also supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (2022R1I1A3068866) and by the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (RS-2023-00258521).
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Y.H.J.: conceptualization, methodology, investigation, data curation, validation, visualization, and writing-original draft preparation. J.I.: methodology and investigation. D.M.L.: investigation and validation. M.C.K. and D.O.: validation and data curation. J.S.: validation and data curation. S.P.: validation and data curation. K.H. and B.J.: investigation and validation. J.L.: supervision, validation, writing-review and editing, project administration, and funding acquisition. All authors have read and agreed to the published version of the manuscript.
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Jeong, Y.H., Im, J., Lee, DM. et al. Coagulation engineering of surfactant-based wet spinning of carbon nanotube fibers. Carbon Lett. 34, 1803–1815 (2024). https://doi.org/10.1007/s42823-024-00735-z
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DOI: https://doi.org/10.1007/s42823-024-00735-z