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Synthesis of continuous silicon carbide fibre

Part 4The structure of polycarbosilane as the precursor

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Abstract

The structure of polycarbosilane is represented by three structural elements, but their quantification is difficult. Polycarbosilanes were synthesized by three methods and the respective molecular structures were examined by measurements of the molecular weight and the intrinsic viscosity, infrared, ultraviolet,1H-,13C- and29Si-NMR spectral measurements, and chemical analysis. The three structural elements (SiC4, SiC3H, SiC x Si4−x ) in the polycarbosilane molecule were determined quantitatively. By the comparison between1H-NMR spectral data and calculation assuming a linear chain structure, the number of linkages in the unit consisting of ten silicon atoms was estimated to be 3 to 4. This result is in agreement with the result from the intrinsic viscosity; it was found that the shape of the polycarbosilane molecule is planar.

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References

  1. S. Yajima, Y. Hasegawa, J. Hayashi andM. Hmura,J. Mater. Sci. 13 (1978) 2569.

    Google Scholar 

  2. Y. Hasegawa, M. Hmura andS. Yajima,ibid. 15 (1980) 720.

    Google Scholar 

  3. Y. Hasegawa andK. Okamura,ibid. 18 (1983) 3633.

    Google Scholar 

  4. K. Okamura, M. Sato andY. Hasegawa,J. Mater. Sci. Lett. 2 (1983) 769.

    Google Scholar 

  5. N. L. Hecht, D. E. McCullum, J. R. Hoenigman, H. M. Kim, A. P. Katz andH. A. Lipsitt,J. Mater. Sci. 19 (1984) 1191.

    Google Scholar 

  6. K. Okamura, M. Sato, T. Matsuzawa andY. Hasegawa,Polym. Preprints 25 (1984) 6.

    Google Scholar 

  7. G. Fritz, J. Grobe andD. Kummer,Adv. Inorg. Chem. Radiochem. 7 (1965) 349.

    Google Scholar 

  8. K. Kamiya, T. Yokoo andS. Sakka,YogyoKyokai-Shi 92 (1984) 242.

    Google Scholar 

  9. K. Sakai, M. Yoshihara andM. Inagaki,Carbon 19 (1981) 83.

    Google Scholar 

  10. M. Sakai, K. Sasaki andM. Inagaki,ibid. 21 (1983) 593.

    Google Scholar 

  11. M. Sasaki, T. Sogabe, H. Kitagawa andM. Inagaki,ibid. 21 (1983) 601.

    Google Scholar 

  12. G. Fritz andE. Matern,Z. Anorg. Allg. Chem. 426 (1976) 28.

    Google Scholar 

  13. A. M. Krgpivin, E. D. Babich, V. I. Svergun andV. M. Vdovin, 5th International Symposium on Organosilicon Chemistry, Karlsruhe, 14 to 18 August 1978, Abstracts of Papers, p. 110.

  14. J. Schraml andJ. M. Bellama, “Determination of Organic Structures by Physical Methods”, Vol. 6 (Academic Press, New York, 1976) p. 204.

    Google Scholar 

  15. Y. Hasegawa andK. Okamura, manuscript in preparation.

  16. W. L. Earl andD. L. Vanderhart,J. Magn. Resonance 48 (1982) 35.

    Google Scholar 

  17. W. A. Kriner,J. Org. Chem. 29 (1964) 1601.

    Google Scholar 

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Authors and Affiliations

  1. The Research Insitute for Special Inorganic Materials, Asahi-mura, Kashima-gun, 311-14, Ibaraki-ken, Japan

    Yoshio Hasegawa

  2. The Oarai Branch, The Research Institute for Iron, Steel and Other Metals, Tohoku University, 311-13, Oarai-machi, Ibaraki-ken, Japan

    Kiyohito Okamura

Authors
  1. Yoshio Hasegawa
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  2. Kiyohito Okamura
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Hasegawa, Y., Okamura, K. Synthesis of continuous silicon carbide fibre. J Mater Sci 21, 321–328 (1986). https://doi.org/10.1007/BF01144739

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  • DOI: https://doi.org/10.1007/BF01144739

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