Hostname: page-component-745bb68f8f-s22k5 Total loading time: 0 Render date: 2025-01-27T13:56:42.287Z Has data issue: false hasContentIssue false
  • English
  • Français

Small Angle Neutron Scattering Studies of Single Phase IPNs

Published online by Cambridge University Press:  15 February 2011

Barry J. Bauer ,
Robert M. Briber ,
Shawn Malone  and
Claude Cohen
Barry J. Bauer
Affiliation:
National Institute of Standards and Technology, Polymers Division, Gaithersburg, MD, 20899.
Robert M. Briber
Affiliation:
National Institute of Standards and Technology, Polymers Division, Gaithersburg, MD, 20899.
Shawn Malone
Affiliation:
School of Chemical Engineering, Cornell University, Ithaca, NY, 14853.
Claude Cohen
Affiliation:
School of Chemical Engineering, Cornell University, Ithaca, NY, 14853.
Get access

Abstract

Interpenetrating polymer networks (IPNs) have been synthesized from polymers that form miscible polymer blends. Full, semi-I and semi-II IPNs made from polystyrene-d8 and poly(vinylmethylether) can be made to phase separate by incorporating low levels of crosslinking. However, blends of these polymers have a negative Flory-Huggins interaction parameter, making them highly miscible. This indicates that formation of IPNs favors phase separation relative to blends.

IPNs made from polystyrene-d8 and polystyrene-h8 show that increased crosslink density also destabilizes the mixture as shown by small angle neutron scattering.

IPNs have also been made by crosslinking end functionalized polydimethylsiloxanes in the presence of nonfunctionalized, deuterated siloxanes. These IPNs are also destabilized by increasing crosslink density, suggesting that the destabilization is due to the network, and not to the particular type of network forming reaction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 274: Symposium R – Submicron Multiphase Materials , 1992 , 59
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Gennes, P. G. de, Scaling Concepts of Polymer Physics,Cornell University Press, New York, 1979, Ch. IV.Google Scholar
2. Flory, P. J., Principles of Polymer Chemistry, Cornell University Press, Ithaca, New York, 1953, Ch. XIII.Google Scholar
3. Bauer, B. J., Briber, R. M., and Han, C. C., Macromolecules, 22, 940 (1989).Google Scholar
4. Briber, R. M. and Bauer, B. J., Macromolecules, 24, 1899 (1991).CrossRefGoogle Scholar
5. Aven, M. R. and Cohen, C., Makromol. Chem., 189, 881 (1988).Google Scholar
6. Briber, R. M. and Bauer, B. J., (Mater. Res. Soc. Proc. 171, Boston, MA 1990) pp. 203–210.Google Scholar
7. Briber, R. M. and Bauer, B. J., Macromolecules, 21, 3296 (1988).Google Scholar
8. Candau, S., Bastide, J., and Delsanti, M., Adv. Polym. Sci., 44, 27 (1982).Google Scholar
9. McKenna, G. B., Flynn, K. M., Chen, Y.-H., Polymer Communications, 29, 272 (1988); Macromolecules, 22, 4507 (1989); Polymer, 31, 1937 (1990).Google Scholar
10. Han, C. C., Bauer, B. J., Clark, J. C., Muroga, Y., Matushita, Y., Okada, M., Tran-Cong, q., Chang, T., and Sanchez, I. C., Polymer, 29, 2002 (1988).Google Scholar
11. Bastide, J., Liebler, L., and Prost, J., Macromolecules, 23, 1821 (1990).Google Scholar
12. Onuki, A., Formation. Dynamics and Statistics of Patterns, Kawasaki, K. ed., World Science publishers (1989); additional communications to be published.Google Scholar