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Russian Chemical Bulletin

, Volume 46, Issue 12, pp 2138–2141 | Cite as

Concentration oscillations in the condensation of organosilanols

  • P. V. Ivanov
  • V. I. Maslova
  • N. G. Bondareva
  • O. A. Yur'eva
  • N. V. Kozlova
  • E. A. Chernyshev
  • K. Yu. Odintsov
  • E. A. Zykunova
Brief Communications

Abstract

Auto-oscillations were discovered by TLC in a study of the condensation of RR'Si(OH)2 (R=R′=Me, Et, Ph; R=Me, R′=CH2=CH, Ph, OH) in aqueous organic solvents in the pH range −1–15 up to large degrees of conversion of the monomer (70–100%). The process is characterized by complicated profiles of the kinetic curves containing sections of acceleration and deceleration of the reaction. The nonequilibrium character of the process was established. It was assumed that the phenomena observed arise as a result of association of the monomer and oligomers during the reaction.

Key words

diorganosilanols condensation inhibition auto-oscillations association 

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References

  1. 1.
    P. V. Ivanov,Vysokomolek. Soedin., A, 1995,37, 431 [Polym. Sci. USSR, A, 1995,37 (Engl. Transl.)].Google Scholar
  2. 2.
    Z. Lasocki,Bull. Acad. Polon. Sci. Ser. Chim., 1964,12, 281.Google Scholar
  3. 3.
    A. M. Zhabotinskii,Kontsentratsionnye kolebaniya [Concentration Oscillations], Nauka, Moscow, 1974, 250 pp. (in Russian).Google Scholar
  4. 4.
    Khimicheskaya entsiklopediya [Encyclopedia of Chemistry], Sovetskaya entsiklopediya, Moscow, 1990,2, 428 pp. (in Russian).Google Scholar
  5. 5.
    S. P. Bondarenko, R. P. Tiger, and S. G. Entelis,Zh. Fiz. Khim., 1981,55, 1716 [J. Phys. Chem. USSR, 1981,55 (Engl. Transl.)].Google Scholar

Copyright information

© Plenum Publishing Corporation 1998

Authors and Affiliations

  • P. V. Ivanov
    • 1
  • V. I. Maslova
    • 1
  • N. G. Bondareva
    • 1
  • O. A. Yur'eva
    • 1
  • N. V. Kozlova
    • 1
  • E. A. Chernyshev
    • 1
  • K. Yu. Odintsov
    • 1
  • E. A. Zykunova
    • 1
  1. 1.M. V. Lomonosov Moscow State Academy of Fine Chemical TechnologyMoscowRussian Federation

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