| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 가을 (10/11 ~ 10/12, 일산킨텍스) |
| 권호 |
32권 2호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Dynamics and Conformation of Single Polymer Molecule in a Micro Slot Coating |
| 초록 |
Dynamics and conformational changes of flexible polymer chains, i.e., λ-DNA, in a micro slot coating flow have been scrutinized using hybridization numerical scheme which combines computational fluid dynamics and Brownian dynamic simulations. Flow field in the coating bead regime has been calculated from two-dimensional Navier-Stokes equation by Flow-3D and Brownian motion of λ-DNA has been predicted by the stochastic equation. Chain extension of λ-DNA varies with the flow strength, Wi, and flow parameter, α. Chains are significantly extended just after passing through the downstream die region due to the extensional deformation flow triggered by the free surface curvature. It has been found that molecules with high Wi and α near the free surface position are more extended than those near the moving web position. |
| 저자 |
이정용1, 유보경1, 이주성2, 정현욱1, 현재천1
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| 소속 |
1고려대, 2LG화학기술(연) |
| 키워드 |
Conformation; Brownian Dynamics; Slot Coating
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| E-Mail |
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