On the nature of the perforated layer phase in undiluted diblock copolymers

Macromolecules

Volumn 30, Issue 15, 1997, Pages 4491-4497

  Qi, Shuyan ^a   Wang, Zhen Gang ^b  

^a California Institute of Technology   (United States)

^b California Institute of Technology   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CALCULATIONS; FREE ENERGY; MOLECULAR STRUCTURE; NEUTRON SCATTERING; PHASE COMPOSITION; PHASE EQUILIBRIA; PHASE SEPARATION; SPECTRUM ANALYSIS;

ANISOTROPIC FLUCTUATION; LAMELLAR STRUCTURE; UNDILUTED DIBLOCK COPOLYMERS;

BLOCK COPOLYMERS;

EID: 0031188815     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma970206t     Document Type: Article

References (31)

1. Bates, F. S.; Fredrickosn, G. H. Annu. Rev. Phys. Chem 1990, 41, 525. Fredrickson, G. H.; Bates, F. S. Annu. Rev. Mater. Sci 1996, 26, 501 and references therein.
2. Bates, F. S.; Fredrickosn, G. H. Annu. Rev. Phys. Chem 1990, 41, 525. Fredrickson, G. H.; Bates, F. S. Annu. Rev. Mater. Sci 1996, 26, 501 and references therein.
3. Leibler, L. Macromolecules 1980, 13, 1602.
4. Vavasour, J. D.; Whitmore, M. D. Macromolecules 1992, 25, 5477.
5. (4) Hamley, I. W.; Koppi, K. A.; Rosedale, J. H.; Bates, F. S.; Almdal, K.; Mortensen, K. Macromolecules 1993, 26, 5959.
6. Thomas, E. L.; Anderson, D. M.; Henkee, C. S.; Hoffman, D. Nature 1988, 334, 598.
7. Hajduk, D. A.; Harper, P. E.; Gruner, S. M.; Honeker, C. C.; Kim, G.; Thomas, E. L.; Fetters, L. J. Macromolecules 1994, 27, 4063.
8. Schulz, M. F.; Bates, F. S.; Almdal, K.; Mortensen, K. Phys. Rev. Lett. 1994, 73, 86.
9. Matsen, M. W.; Schick, M. Phys. Rev. Lett. 1994, 72, 2660.
10. Matsen, M. W.; Bates, F. S. Macromolecules 1996, 29, 1091.
11. Förster, S.; Khandpur, A. K.; Zhao, J.; Bates, F. S.; Hamley, I. W.; Ryan, A. J.; Bras, W. Macromolecules 1994, 27, 6922.
12. Khandpur, A. K.; Forster, S.; Bates, F. S.; Hamley, I. W.; Ryan, A. J.; Bras, W.; Almdal, K.; Mortensen, K. Macromolecules 1995, 28, 8796.
13. de la Cruz, M. O.; Mayes, A. M.; Swift, B. W. Macromolecules 1991, 25, 944.
14. Fredrickson, G. H. Macromolecules 1991, 24, 3456.
15. Hamley, I. W.; Bates, F. S. J. Chem. Phys. 1994, 100, 6813.
16. Qi, S. Y.; Wang, Z.-G. Phys. Rev. E. 1997, 55, 1682.
17. Qi, S. Y.; Wang, Z.-C. Phys. Rev. Lett. 1996, 76, 1679.
18. Yeung, C.; Shi, A.-C.; Noolandi, J.; Desai, R. C. Macromol. Theory Simul. 1996, 5, 291.
19. Laradji, M.; Shi, A.-C.; Desai, R. C.; Noolandi, J. Phys. Rev. Lett. 1997, 78, 2577; Macromolecules, 1997, 30, 3242.
20. Laradji, M.; Shi, A.-C.; Desai, R. C.; Noolandi, J. Phys. Rev. Lett. 1997, 78, 2577; Macromolecules, 1997, 30, 3242.
21. Shi, A.-C.; Noolandi, J.; Desai, R. C. Macromolecules 1996, 29, 6487.
22. Ohta, T.; Kawasaki, K. Macromolecules 1986, 19, 2621.
23. See Kittel, C. Solid State Physics; Wiley: New York, 1976.
24. Cross, M. C.; Hohenberg, P. C. Rev. Mod. Phys. 1993, 65, 851.
25. A third and trivial choice has two spots 180° from each other on the ring; this corresponds simply to a hexagonally ordered cylinder phase with the cylinder axis perpendicular to the layer normal of the original L phase.
26. The predicted wide angular spread of the in-plane scattering peaks is consistent with the experimental data in refs 4 and 11. However, in another paper (Hamley, I. W.; Gehlsen, M. D.; Khandpur, A.K.; Koppi, K. A.; Rosedale, J. H.; Schulz, M. F.; Bates, F. S.; Almdal, K.; Mortensen, K. J. Phys. II Fr. 1994, 4, 2161) a narrower angular spread for the six peaks was observed. These sharper peaks are probably due to deviation from the weak aggregation regime. Such deviation would enhance the secondary Bragg peaks and suppress the anisotropic fluctuations.
27. Hajduk, D. A.; Takenouchi, H.; Hillmyer, M. A.; Bates, F. S.; Vigild, M. E.; Almdal, K. Macromolecules 1997, 30, 3788.
28. Almdal, K.; Koppi, K. A.; Bates, F. S. Macromolecules 1993, 26, 4058.
29. Qi, S. Y.; Wang, Z.-G. Unpublished.
30. Cates M. E.; Milner, S. T. Phys. Rev. Lett 1989, 62, 1856.
31. Fredrickson, G. H. J. Rheol. 1994, 38, 1045.