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Polymer Bulletin

, Volume 31, Issue 3, pp 279–283 | Cite as

The synthesis and characterization of a mesomorphic brush type polycarbosilane: poly[1,1-bis(4′-biphenyl)silabutane]

  • Steven J. Sargeant
  • LeDon Bean
  • Mark A. Tapsak
  • William P. Weber
Article

Summary

Poly[1,1-bis(4′-biphenyl)silabutane] (II) has been prepared by the anionic ring opening polymerization of 1,1-bis(4′-biphenyl)silacyclobutane. II shows mesomorphic behavior by DSC. The13C NMR T1 relaxation times have been measured. These are found to be smaller than those of poly(1,1-dimethylsilabutane)by an order of magnitude. This may result from interaction of the highly rigid biphenyl side chain moieties. The thermal stability of II is higher than that for other 1,1-disubstituted polysilabutanes.

Keywords

Polymer Thermal Stability Relaxation Time Biphenyl Anionic Ring 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Steven J. Sargeant
    • 1
  • LeDon Bean
    • 1
  • Mark A. Tapsak
    • 1
  • William P. Weber
    • 1
  1. 1.D. P. and K. B. Loker Hydrocarbon Research Institute, Chemistry DepartmentUniversity of Southern CaliforniaLos AngelesUSA

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