Bulletin of the Korean Chemical Society

  • 제21권9호
  • /
  • Pages.875-881
  • /
  • 2000
  • /
  • 0253-2964(pISSN)
  • /
  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
권호 표지
DOI QR코드

DOI QR Code

Brownian Dynamics Simulation Study on the Anisotropic FENE Dumbbell Model for Concentrated Polymer Solution and the Melt

  • 발행 : 20000900
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

We study the rheological properties of concentrated polymer solution and the melt under simple shear and elon-gational flow using Brownian dynamicssimulation. In order to describe the anisotropic molecular motion, we modifiedthe Giesekus' mobility tensor by incorporating the finitely extensible non-linear elastic (FENE) spring force into dumbbell model. To elucidate the nature of this model, our simulation results are compared with the data of FENE-P ("P"standsfor the Perterin) dumbbell model and experiments. While in steady state both original FENE and FENE-P models exhibit a similar viscosity response,the growthof viscosity becomes dissimilar as the anisotropy decreases and the flowrate increases. The steady state viscosity obtained from the simulation well describes the experiments including the shear-thinning behavior in shear flow and viscosity-thinning behavior in elongational flow. But the growth of viscosity oforiginal FENE dumbbell model cannot describe the experimental results in both flow fields.

키워드

참고문헌

  1. J. Chem. Phys. v.55 Gennes, P. J.
  2. J. Chem. Soc. Faraday Trans. 2 v.74 Doi, M.;Edwards, S. F.
  3. ibid. v.74 Doi, M.;Edwards, S. F.
  4. ibid. v.74 Doi, M.;Edwards, S. F.
  5. ibid. v.75 Doi, M.;Edwards, S. F.
  6. The Theory of Polymer Dynamics Doi, M.;Edwards, S. F.
  7. J. Chem. Phys. v.74 Curtiss, C. F.;Bird, R. B.
  8. ibid. v.86 Bird, R. B.;Saab, H. H.;Curtiss, C. F.
  9. ibid. v.77 Saab, H. H.;Bird, R. B.;Curtiss, C. F.
  10. Dynamics of Polymeric Liquids,($2^{nd}$) v.1: Fluid Mechanics,;Kinetic Theory, Bird, R. B.;Curtiss, C. F.;Armstrong, R. C.;Hassager, O.
  11. Rheol. Acta v.21 Giesekus, H.
  12. J. Non-Newtonian Fluid Mech. v.11 Giesekus, H.
  13. J. Non-Newtonian Fluid Mech. v.12 Giesekus, H.
  14. J. Non-Newtonian Fluid Mech. v.17 Giesekus, H.
  15. J. Rheol. v.29 Bird, R. B.;Wiest, J. M.
  16. Ph.D. Thesis, Warner, H. R. Jr.
  17. Annu. Rev. Fluid Mech. v.27 Bird, R. B.;Wiest, J. M.
  18. J. Non-Newtonian Fluid Mech. v.68 Herrchen, M.;Ottinger, H. C.
  19. Rheol. Acta v.28 Wiest, J. M.
  20. Makromol. Chem. v.44 Peterin, A.
  21. J. Chem. Phys. v.69 Ermak, D. L.;McCammon, J. A.
  22. Stochastic Processes in Polymeric Fluids $\"{O}ttinger$, H. C.
  23. Numerical Solution of SDE Through Computer Experimentals Kloeden, P. E.;Platen, E.;Shurz, H.
  24. Macromolecules v.27 $\"{O}ttinger$, H. C.
  25. Trans. Soc. Rheol. v.19 Tanner, R. I.
  26. Rheol. Acta v.19 Menezes, E. V.;Graessley, W. W.
  27. J. Rheol. v.24 $M\"{u}nstedt$, H.
  28. Rheol. Acta v.18 Laun, H. M.;$M\"{u}nstedt$, H. M.