Surface segregation studies of fluorine-containing diblock copolymers

Macromolecules

Volumn 29, Issue 4, 1996, Pages 1229-1234

  Iyengar, Dhamodharan R ^a   Perutz, Susanne M ^a   Dai, Chi An ^a   Ober, Christopher K ^a   Kramer, Edward J ^a  

^a Department of Materials Science and Engineering   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 4243160951     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma950544z     Document Type: Article

References (28)

1. Katano, Y.; Tomono, H.; Nakajima, T. Macromolecules 1994 27, 2342.
2. Hopken, J.; Möller, M. Macromolecules 1992, 25, 1461.
3. Schneider, J.; Erdelen, C.; Ringsdorf, H.; Rabolt, J. F. Macromolecules 1989, 22, 3475.
4. Rabolt, J. F.; Russell, T. P.; Tweig, R. J. Macromolecules 1984, 17, 2786.
5. Brady, R. F., Jr. In Encyclopedia of Polymer Science and Technology, 2nd ed.; Mark, H., et al., Eds.; Wiley: New York, 1986.
6. Diblock copolymer micelles are known to segregate to surface and interfacial regions. In fact, micellization places a fundamental limitation on the utility of block copolymers as interfacial agents. For example, see: Shull, K. R.; Winey, K. I.; Thomas, E. L.; Kramer, E. J. Macromolecules 1991, 24, 2748.
7. Leibler, L. Makromol. Chem., Macromol. Symp. 1988, 16, 1.
8. Shull, K. R.; Kramer, E. J. Macromolecules 1990, 23, 4769.
9. Dai, K. H.; Shull, K. R.; Kramer, E. J. Macromolecules 1992, 25, 220.
10. Shull, K. R. J. Chem. Phys. 1991, 94, 5723.
11. Dai, K. H.; Kramer, E. J. J. Polym. Sci., Part B: Polym. Phys. 1994, 32, 1943.
12. Jones, R. A. L.; Norton, L. J.; Shull, K. R.; Kramer, E. J.; Felcher, G. P.; Karim, A.; Fetters, L. J. Macromolecules 1992, 25, 2359.
13. Brown, H. R.; Char, K.; Deline, V. R. Macromolecules 1990, 23, 3383.
14. Hwang, S. S.; Ober, C. K.; Perutz, S.; Iyengar, D. R.; Schneggenburger, B.; Kramer, E. J. Polymer 1995, 36, 1321.
15. Shull, K. R.; Kramer, E. J.; Hadziioannou, G.; Tang, W. Macromolecules 1990, 23, 4780.
16. Mills, P. J.; Green, P. F.; Palmstrom, C. J.; Mayer, J. W.; Kramer, E. J. Appl. Phys. Lett. 1984, 45, 957.
17. Green, P. F.; Mills, P. J.; Palmstrom, C. J.; Mayer, J. W.; Kramer, E. J. Polymer 1986, 27, 1063.
18. Mao, G.; Clingman, S. R.; Ober, C. K.; Long, T. E. Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.) 1993, 34 (1), 710.
19. Kendall, E. W.; McCarthy, T. J. Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.) 1992, 33 (2), 158. (
20. We are well aware of the fact that the model low surface energy groups that we have attached may be susceptible to hydrolysis in aqueous environments or under alkaline pH conditions. One of the polymers, I2-hfb, was stable to hydrolysis after a thin film of it was immersed in distilled water for 24 h as followed by transmission FT-infrared spectroscopy. We believe that the stability is due to water not wetting the surface.
21. Shull, K. R. Macromolecules 1993, 26, 2346.
22. Semenov, A. N. Macromolecules 1992, 25, 4967.
23. ∞ was confirmed by the following experiments. Thin (1000 Å) layers of polystyrene homopolymer were spun onto samples previously established to have equilibrium segregation by the z* versus annealing time studies and were annealed at 160 °C until z* equilibrium was reestablished. The interfacial block copolymer excesses thus obtained were not significantly different (in fact, a little less consistent with the increase in the thickness of the PS layer) from those obtained without the extra layer of PS, confirming that what we are observing are indeed equilibrium segregation excesses.
24. Franchina, N. F.; McCarthy, T. J., private communication.
25. Claire Jalbert, Ph.D Thesis, University of Connecticut, 1993. Jalbert, C.; Koberstein, J.; Ellman, J. F.; Long, T.; Gunnesin, B. APS Abstr. 1993, 38 (1), 294.
26. Claire Jalbert, Ph.D Thesis, University of Connecticut, 1993. Jalbert, C.; Koberstein, J.; Ellman, J. F.; Long, T.; Gunnesin, B. APS Abstr. 1993, 38 (1), 294.
27. Physics; Andrade, J. D., Ed.; Plenum Press: New York, 1985; p 266.
28. Shoichet, M. S.; McCarthy, T. J. Macromolecules 1991, 24, 982.