Effect of magnetic field on molecular orientation of nematic liquid crystalline polymers under simple shear flow

Journal of Rheology

Volumn 52, Issue 2, 2008, Pages 451-468

  Fu, Shufang ^a,b   Tsuji, Tomohiro ^a   Chono, Shigeomi ^a  

^a KOCHI UNIVERSITY OF TECHNOLOGY   (Japan)

^b HARBIN NORMAL UNIVERSITY   (China)

Author keywords

Magnetic field; Molecular orientation; Nematic liquid crystalline polymers

Indexed keywords

LIQUID CRYSTAL POLYMERS; MAGNETIC FIELDS; MOLECULAR ORIENTATION; SHEAR FLOW; VELOCITY;

SCALAR ORDER PARAMETER; VELOCITY GRADIENTS;

NEMATIC LIQUID CRYSTALS;

EID: 40549135035     PISSN: 01486055     EISSN: None     Source Type: Journal    
DOI: 10.1122/1.2837113     Document Type: Article

References (30)

1. Andrews, N. C., B. J. Edwards, and A. McHugh, " The rheology of highly concentrated PBLG solutions.," J. Rheol. JORHD2 0148-6055 10.1122/1.550633 39, 1161-1181 (1995).
2. Asada, T., T. Tanaka, and S. Onogi, " Rheology of liquid crystalline solutions of alpha-helix polypeptides.," J. Appl. Polym. Sci.: Appl. Polym. Symp. JPSSDD 0271-9460 41, 229-239 (1985).
3. Baek, S.-G., J. J. Magda, and S. Cementwala, " Continuum dynamic behavior of homogeneous liquid-crystalline polymers under the imposition of shear and magnetic fields.," J. Rheol. JORHD2 0148-6055 10.1122/1.550404 37, 935-945 (1993a).
4. Belyaev, V. V., " Physical methods for measuring the viscosity coefficients of nematic liquid crystals.," Phys. Usp. PHUSEY 1063-7869 10.1070/pu2001v044n03ABEH000831 44, 255-284 (2001).
5. Berry, G. C., " Rheological properties of nematic solutions of rodlike polymers.," Mol. Cryst. Liq. Cryst. MCLCA5 0026-8941 10.1080/00268948808082206 165, 333-360 (1988).
6. Bhandar, A. S., and J. M. Wiest, " Mesoscale constitutive modeling of magnetic dispersions.," J. Colloid Interface Sci. JCISA5 0021-9797 10.1016/S0021-9797(02)00010-3 257, 371-382 (2003).
7. Bhandar, A. S., M. Piao, A. M. Lane, and J. M. Wiest, " Mesoscale constitutive modeling of magnetic dispersions: Material functions for shear flows.," J. Colloid Interface Sci. JCISA5 0021-9797 10.1016/j.jcis.2003.08. 014 268, 246-257 (2003).
8. Chono, S., and T. Tsuji, " Numerical analysis of the rheology of polymeric liquid crystals (second report, shear and extensional flow behavior).," Trans. Jpn. Soc. Mech. Eng., Ser. B NKGBDD 0387-5016 65, 3539-3545 (1999)(in Japanese).
9. Doi, M., " Molecular dynamics and rheological properties of concentrated solutions of rodlike polymers in isotropic and liquid crystalline phases.," J. Polym. Sci., Polym. Phys. Ed. JPLPAY 0098-1273 10.1002/pol.1981.180190205 19, 229-243 (1981).
10. Ericksen, J. L., " Transversely isotropic fluids.," Kolloid-Z. KOZEA7 0368-6590 10.1007/BF01502416 173, 117-122 (1960).
11. Feng, J. J., G. Sgalari, and L. G. Leal, " A theory for flowing nematic polymers with orientational distortion.," J. Rheol. JORHD2 0148-6055 10.1122/1.1289278 44, 1085-1101 (2000).
12. Forest, M. G., S. Sircar, Q. Wang, and R. Zhou, " Monodomain dynamics for rigid rod and platelet suspensions in strongly coupled coplanar linear flow and magnetic fields: Kinetic simulations.," Phys. Fluids PHFLE6 1070-6631 10.1063/1.2359232 18, 103102 (2006).
13. Forest, M. G., Q. Wang, and R. Zhou, " Monodomain dynamics for rigid rod and platelet suspensions in strongly coupled coplanar linear flow and magnetic fields.," J. Rheol. JORHD2 0148-6055 10.1122/1.2400704 51, 1-22 (2007).
14. Grizzuti, N., N. S. Cavella, and P. Cicarelli, " Transient and steady-state rheology of a liquid crystalline hydroxypropylcellulose solution.," J. Rheol. JORHD2 0148-6055 10.1122/1.550139 34, 1293-1310 (1990).
15. Kiss, G., and R. S. Porter, " Rheology of concentrated solutions of poly (gamma -benzyl-glutamate).," J. Polym. Sci., Polym. Symp. JPYCAQ 0360-8905 65, 193-211 (1978).
16. Kiss, G., and R. S. Porter, " Rheology of concentrated solutions of helical polypeptides.," J. Polym. Sci., Part A-2 JPLPAY 0098-1273 10.1002/pol.1980.180180217 18, 361-388 (1980b).
17. Larson, R. G., " Arrested tumbling in shearing flows of liquid crystal polymers.," Macromolecules MAMOBX 0024-9297 10.1021/ma00219a020 23, 3983-3992 (1990).
18. Larson, R. G., and H. C. Öttinger, " Effect of molecular elasticity on out-of-plane orientations in shearing flows of liquid-crystalline polymers.," Macromolecules MAMOBX 0024-9297 10.1021/ma00023a033 24, 6270-6282 (1991).
19. Larson, R. G., and D. W. Mead, " The Ericksen number and Deborah number cascades in sheared polymeric nematics.," Liq. Cryst. LICRE6 0267-8292 10.1080/02678299308031947 15, 151-169 (1993).
20. Leslie, F. M., " Some constitutive equations for anisotropic fluids.," Q. J. Mech. Appl. Math. QJMMAV 0033-5614 10.1093/qjmam/19.3.357 19, 357-370 (1966).
21. Leslie, F. M., " Theory of flow phenomena in liquid crystals.," Adv. Liq. Cryst. ALCRD7 0360-2486 4, 1-84 (1979).
22. Luckhurst, G. R., B. A. Timimi, M. Nakatsuji, K. Okumoto, A. Sugimura, and H. Zimmermann, " Field-induced director dynamics of nematics 4-octyl- 4′ -cyanobiphenyl: A study by deuterium NMR spectroscopy.," Mol. Cryst. Liq. Cryst. MCLCD8 1542-1406 10.1080/15421400390221736 398, 235-248 (2003).
23. Lukaschek, M., and G. Kothe, " Evaluation of the viscoelastic properties of a nematic dimer by cone-and-plate rheo-nuclear magnetic resonance spectroscopy and comparison with Leslie-Ericksen theory.," J. Phys. Chem. JPCHAX 0022-3654 10.1063/1.1497161 117, 4550-4556 (2002).
24. Marrucci, G., " Rheology of rodlike polymers in the nematic phase with tumbling or shear orientation.," Rheol. Acta RHEAAK 0035-4511 10.1007/BF01329298 29, 523-528 (1990).
25. Marrucci, G., and P. L. Maffettone, " Description of the liquid-crystalline phase of rodlike polymers at high shear rates.," Macromolecules MAMOBX 0024-9297 10.1021/ma00200a045 22, 4076-4082 (1989).
26. Marrucci, G., and F. Greco, " The elastic constants of Maier-Saupe rodlike molecule nematics.," Mol. Cryst. Liq. Cryst. MCLCA5 0026-8941 10.1080/00268949108037714 206, 17-30 (1991).
27. Moldenaers, P., and J. Mewis, " Transient behavior of liquid crystalline solutions of poly(benzylglutamate).," J. Rheol. JORHD2 0148-6055 10.1122/1.549861 30, 567-584 (1986).
28. Tsuji, T., and A. D. Rey, " Effect of long range order on sheared liquid crystalline materials: Part 1: Compatibility between tumbling behavior and fixed anchoring.," J. Non-Newtonian Fluid Mech. JNFMDI 0377-0257 10.1016/S0377-0257(97)00037-2 73, 127-152 (1997).
29. Tsuji, T., and A. D. Rey, " Orientation mode selection mechanisms for sheared nematic liquid crystalline materials.," Phys. Rev. E PLEEE8 1063-651X 10.1103/PhysRevE.57.5609 57, 5609-5625 (1998).
30. Walker, L. M., N. J. Wagner, R. G. Larson, P. A. Mirau, and P. Moldenaers " The rheology of highly concentrated PBLG solutions.," J. Rheol. JORHD2 0148-6055 10.1122/1.550624 39, 925-952 (1995).