Thermodynamic functions for reactions of the n-butyl esters of n-trifluoroacetyl derivatives of amino acids with polyethylene glycol adipinate on modified carriers

  • S. V. Vitt
  • E. A. Paskonova
  • V. M. Belikov
Physical Chemistry
  • 20 Downloads

Conclusions

  1. 1.

    Thermodynamic functions have been determined for the interaction of n-butyl esters of the N-trifluoroacetyl amino-acid derivatives, and the n-parafins (C13-C20), with polyethylene glycol adipinate.

     
  2. 2.

    The values of these functions vary with the amount of stationary liquid phase on the solid carrier, and differ depending on whether or not the carrier has been silanated.

     
  3. 3.

    Such changes in the thermodynamic functions closely arise from chemical modification of the stationary phase through the establishment of covalent bonding with the carrier surface.

     
  4. 4.

    The selectivity can be regulated by varying the amount of the stationary phase on the solid carrier.

     

Keywords

Ester Silanated Polyethylene Glycol Liquid Phase 

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Literature cited

  1. 1.
    M. Stefanovic and B. L. Walker, Anal. Chem.,39, 710 (1967).Google Scholar
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    R. W. Zumwalt, D. Roach, and G. W. Gehrke, J. Chromatogr. Sci.,53, 171 (1970).Google Scholar
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    T. Brian and J. W. Parsons, J. Chromatogr. Sci.,90, 370 (1974).Google Scholar
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    S. V. Vitt., M. B. Saporovskaya, E. A. Paskonova, S. B. Nikitina, and V. M. Belikov, Izv. Akad. Nauk SSSR, Ser. Khim.,1974, 1319.Google Scholar
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    V. G. Berezkin, M. Kh. Lunskii, and A. A. Zhukhovitskii, Chromatography [in Russian], Vol. 1, Nauka (1974), p. 19.Google Scholar

Copyright information

© Plenum Publishing Corporation 1978

Authors and Affiliations

  • S. V. Vitt
    • 1
  • E. A. Paskonova
    • 1
  • V. M. Belikov
    • 1
  1. 1.Institute of Heteroorganic CompoundsAcademy of Sciences of the USSRMoscow

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