| 세션명 | 대학원생 구두발표 (II) |
|---|---|
| 발표장 | 제11-1회장 |
| 논문코드 | O11-10 |
| 발표일 | 2024-04-3 |
| 발표시간 | 15:30-15:45 |
| 논문제목 | Wet Spinning Process of CNTs and Cellulose Nanofiber Based on Extensional Rheology |
| 발표자 | 최경민 |
| 발표자 소속 | 동아대학교 |
| 저자 | 최경민, 이헌상† |
| 소속 | 동아대학교 |
| 논문초록 | The wet-spinning process for producing highly oriented carbon nanotubes(CNTs) and cellulose nanofiber(CNF) is crucial for achieving superior properties. We present a theoretical model (Hyper-Spin-Line(HSL) model) for obtaining well-aligned CNT fibers. Our model predicts the minimum draw ratio(DR0) at various Deborah numbers(De) necessary for the target orientation of the fibers. The rotational relaxation time is proportional to the reciprocal of excluded volume, particularly for long CNTs with waviness. The model predictions for the stability window and the effect of DR on fiber properties were confirmed experimentally. the shape factor difference during the coagulation process was predicted using DLVO theory and confirmed experimentally. Also, the effect of depletion force during elasto-osmo-capillary driven self-assembly was theoretically confirmed. These fibers can be invaluable in emerging applications like aerospace vehicles, robotic arms and satellites. |
THE POLYMER SOCIETY OF KOREA