Undulations and disorder in block copolymer lamellae under shear flow

Macromolecules

Volumn 30, Issue 4, 1997, Pages 982-992

  Wang, H ^a   Kesani, P K ^a   Balsara, N P ^a   Hammouda, B ^b  

^a POLYTECHNIC UNIVERSITY   (United States)

^b NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

MICROSTRUCTURE; MOLECULAR ORIENTATION; NEUTRON SCATTERING; SHEAR FLOW;

BLOCK COPOLYMER LAMELLAR UNDULATIONS; SMALL ANGLE NEUTRON SCATTERING;

BLOCK COPOLYMERS;

EID: 0031078450     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma961269z     Document Type: Article

References (49)

1. Folkes, M. J.; Keller, A. J. Polym. Sci., Polym. Phys. Ed. 1976, 14, 833.
2. Hadziioannou, G.; Skoulios, A. Macromolecules 1982, 15, 258.
3. (a) Colby, R. H. Curr. Opin. Colloid Interface Sci. 1996, 1, 454.
4. (b) Fredrickson, G. H.; Bates, F. S. Annu. Rev. Mater. Sci. 1996, 26, 501.
5. Koppi, K. A.; Tirrell, M.; Bates, F. S.; Almdal, K.; Colby, R. H. J. Phys. (France) 1992, 2, 1941.
6. (a) Larson, R. G.; Winey, K. I.; Patel, S. S.; Watanabe, H.; Bruinsma, R. Rheol. Acta 1993, 32, 245.
7. (b) Winey, K. I.; Patel, S. S.; Watanabe, H. Macromolecules 1993, 26, 2542, 4373.
8. (c) Patel, S. S.; Larson, R.; Winey, K. I.; Watanabe, H. Macromolecules 1995, 28, 4313.
9. Gupta, V. K.; Krishnamoorti, R.; Kornfield, J. A.; Smith, S. D. Macromolecules 1995, 28, 4464.
10. Gupta, V. K.; Krishnamoorti, R.; Chen, Z. R.; Kornfield, J. A.; Smith, S. D.; Satkowski, M. M.; Grothaus, J. T. Macromolecules 1996, 29, 875 and references therein.
11. Zhang, Y.; Weisner, U.; Yang, Y.; Pakula, T.; Speiss, H. W. Macromolecules 1996, 29, 5427.
12. (a) Balsara, N. P.; Hammouda, B. Phys. Rev. Lett. 1994, 72, 360.
13. (b) Balsara, N. P.; Hammouda, B.; Kesani, P. K.; Jonnalagadda, S. V.; Straty, G. C. Macromolecules 1994, 27, 2566.
14. Winter, H. H.; Scott, D. B.; Gronski, W.; Okamoto, S.; Hashimoto, T. Macromolecules 1993, 26, 7236.
15. Almdal, K.; Bates, F. S.; Mortensen, K. J. Chem. Phys. 1992, 96, 9122.
16. Morrison, F. A.; Mays, J. W.; Muthukumar, M.; Nakatani, A. I.; Han, C. C. Macromolecules 1993, 26, 5271.
17. Balsara, N. P.; Dai, H. J. J. Chem. Phys. 1996, 105, 2942.
18. Nakatani, A. I.; Morrison, F. A.; Douglas, J. F.; Mays, J. W.; Jackson, C. L.; Muthukumar, M.; Han, C. C. J. Chem. Phys. 1996, 104, 1589.
19. Tepe, T.; Schulz, M. F.; Zhao, J.; Tirrell, M.; Bates, F. S. Macromolecules 1995, 28, 3008.
20. Koppi, K. A.; Tirrell, M.; Bates, F. S. Phys. Rev. Lett. 1993, 70, 1449.
21. Fredrickson, G. H. J. Rheol. 1994, 38, 1045.
22. Goulian, M.; Milner, S. T. Phys. Rev. Lett. 1995, 74, 1775.
23. Cates, M. E.; Milner, S. T. Phys. Rev. Lett. 1989, 62, 1856.
24. Cates, M. E.; Marques, C. M. J. Phys. (France) 1990, 51, 1733.
25. de Gennes, P. G.; Prost, J. The Physics of Liquid Crystals, 2nd ed.; Oxford: New York, 1993.
26. Chandrasekhar, S. Liquid Crystals 2nd ed.; Cambridge: New York, 1992.
27. Gido, S. P.; Thomas, E. L. Macromolecules 1994, 27, 6137 and references therein.
28. Garetz, B. A.; Balsara, N. P.; Dai, H. J.; Wang, Z.; Newstein, M. C.; Majumdar, B. Macromolecules 1996, 29, 4679 and references therein.
29. Diat, O.; D. Roux, D.; Nallet, F. J. Phys. II (France) 1993, 3, 1427.
30. Lin, C. C.; Jonnalagadda, S. V.; Kesani, P. K.; Dai, H. J.; Balsara, N. P. Macromolecules 1994, 27, 7769.
31. Amundson, K. R.; Helfend, E.; Patel, S. S.; Quan, X.; Smith S. S. Macromolecules 1992, 25, 1935.
32. Balsara, N. P.; Perahia, D.; Safinya, C. R.; Tirrell, M.; Lodge, T. P. Macromolecules 1992, 25, 3896.
33. Fredrickson, G. H.; Leibler, L. Macromolecules 1989, 22, 1238.
34. Leibler, L. Macromolecules 1980, 13, 1602.
35. Fredrickson, G. H.; Helfand, E. J. Chem. Phys. 1987, 87, 697.
36. Perahia, D.; Vacca, G.; Patel, S. S.; Dai, H. J.; Balsara, N. P. Macromolecules 1994, 27, 7645.
37. Amundson, K.; Helfand, H. Macromolecules 1993, 26, 1324.
38. Helfrich, W. Z. Naturforsch. 1978, 33a, 305.
39. Fukuda, J.; Onuki, A. J. Phys. II (France) 1995, 5, 1107.
40. Wang, Z. G. J. Chem. Phys. 1994, 100, 2298.
41. Williams, D. M. R.; MacKintosh, F. C. Macromolecules 1994, 27, 7677.
42. 9 on SI(11-17)DOP. We started our studies on the SI(16-18)/DOP with 200% strain and found results similar to those reported in this paper. Our original intent was to obtain well-aligned states, so we increased the strain to 400%, with the hope of reducing imperfection density. Of course, this did not turn out to be the case.
43. The quiescent ordering kinetics in this solution, after quenching from the disordered state to temperatures between 24 and 35 °C, were studied using the local birefringence method. The rate of growth of the ordered phase was maximum at 30 °C (A. Krishnan and N. P. Balsara, unpublished results). During our SANS experiment, the sample was heated to 30 °C to save precious time on the neutron machine. The slow reordering kinetics at 24 °C are not completely understood, especially after shear disordering, and are the subject of ongoing research.
44. (a) Safinya, C. R.; Sirota, E. B.; Plano, R. J. Phys. Rev. Lett. 1991, 66, 1986.
45. (b) Bruinsma, R. F.; Safinya, C. R. Phys. Rev. A 1991, 43, 5377.
46. (c) Safinya, C. R.; Sirota, E. B.; Bruinsma, R. F.; Jeppesen, C.; Plano, R. J.; Wenzel, L. J. Science 1993, 261, 588.
47. Ramaswamy, S. Phys. Rev. Lett. 1992, 69, 112.
48. Watanabe, H. Macromolecules 1995, 28, 5006.
49. Certain equipment and instruments or materials are identified in this paper in order to adequately specify the experimental details. Such identification does not imply recommendation by the National Institute of Standards and Technology, nor does it imply the materials are necessarily the best available for the purpose.