Theoretical and experimental investigation of the wet-spinning process for mechanically strong carbon nanotube fibers

Title
Theoretical and experimental investigation of the wet-spinning process for mechanically strong carbon nanotube fibers
Authors
구본철김서균정현담최경민박민지이헌상
Keywords
wet spinning; carbon nanotube fibers; mechanical strength; orientation factor
Issue Date
2021-05
Publisher
Chemical engineering journal
Citation
VOL 412, 128650
Abstract
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 (D0R) at various Deborah numbers (De) for CNT fibers with the target orientation. In addition, the stable operation window in the De-DR 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, DR, is higher than D0 R and is within a stable operation window. The model predictions for the stability window and the effect of DR on the properties of the fibers were confirmed by experiment.
URI
http://pubs.kist.re.kr/handle/201004/72824
ISSN
1385-8947
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KIST Publication > Article
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