Jeong, Hyeon Dam Kim, Seo Gyun Choi, Gyeong Min Park, Minji Ku, Bon-Cheol Lee, Heon Sang 2024-01-19T14:33:45Z 2024-01-19T14:33:45Z 2021-09-05 2021-05-15 1385-8947 https://pubs.kist.re.kr/handle/201004/116995 The orientation factor is significantly important for producing highly strong conductive carbon nanotube (CNT) fibers. Highly oriented CNT fibers can be obtained by the wet-spinning of CNTs in a superacid. We present a theoretical model for obtaining well-aligned CNT fibers, which may have superior properties. Our model predicts the minimum draw ratio (D-R(0)) at various Deborah numbers (De) for CNT fibers with the target orientation. In addition, the stable operation window in the De-D-R plane is predicted using linear stability analysis of the draw resonance. Our analysis suggests that a fiber with the target orientation factor can be obtained if and only if the draw ratio, D-R, is higher than D-R(0) and is within a stable operation window. The model predictions for the stability window and the effect of D-R on the properties of the fibers were confirmed by experiment. English ELSEVIER SCIENCE SA Theoretical and experimental investigation of the wet-spinning process for mechanically strong carbon nanotube fibers Article 10.1016/j.cej.2021.128650 1 CHEMICAL ENGINEERING JOURNAL, v.412 CHEMICAL ENGINEERING JOURNAL 412 scie scopus 000638221300004 2-s2.0-85099807394 Engineering, Environmental Engineering, Chemical Engineering Article Wet-spun carbon nanotube fibers Simulation model Fluid dynamics Rheology Orientation factor Mechanical properties