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


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.


Polymer Thermal Stability Relaxation Time Biphenyl Anionic Ring 
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  1. 1.
    Mark, HF, Bikales, NM, Overberger CG, Menges G, Kroschwitz JI (1986) Polymer Sci & Eng. Encyclopedia, 2nd Ed. vol 4: 482.Google Scholar
  2. 2.
    CiFerri A, Ward IM, eds. (1979) Ultra-High Modulus Polymers. Applied Science, London.Google Scholar
  3. 3.
    McArdle CB, ed (1989) Side Chain Liquid Crystal Polymer. Chapman & Hall, New York.Google Scholar
  4. 4.
    Chung TS (1986) Polymer Eng and Sci 26: 901.Google Scholar
  5. 5.
    Finkelmann H, Ringsdorff H, Wendorff JH (1978) Makromol Chem 179: 273.Google Scholar
  6. 6.
    Dix LD (1993) Trends Polym Sci 1: 25.Google Scholar
  7. 7.
    Liao CX, Weber WP (1993) Macromolecules 26: 563.Google Scholar
  8. 8.
    Marvel CS (1967) High Temperature Polymers. Segal CL (ed) Marcel Dekker, New York, Chapter 1.Google Scholar
  9. 9.
    Sargeant SJ, Zhou SQ, Manuel G, Weber WP (1992) Macromolecules 25: 2832Google Scholar
  10. 10.
    Eppley RL, Dixon JA (1967) J Organomet Chem 8: 176.Google Scholar
  11. 11.
    Nametkin NS, Vdovin VM, Grinberg PL (1964) Izv Akad Nauk SSSR Ser Khim, 1133.Google Scholar
  12. 12.
    Liao CX, Weber WP (1992) Polym Bull 28: 281Google Scholar
  13. 13.
    Schaefer J, Natusch DFS (1972) Macromolecules 5: 416Google Scholar

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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