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Kinetics of acetalization of poly(vinyl alcohol) with aliphatic aldehydes in aqueous solutions

  • G. N. Kormanovskaya
  • I. N. Vlodavets
Brief Communications
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Summary

  1. 1.

    The reactions of acetaldehyde, propionaldehyde, and butyraldehyde with poly(vinyl alcohol) in aqueous solution obey the same kinetic equations as the previously studied reaction of formaldehyde with poly(vinyl alcohol).

     
  2. 2.

    The apparent activation energy for the reaction of poly(vinyl alcohol) with acetaldehyde, propionaldehyde, and butyraldehyde (E=14.7 kcal/mole) is less than the activation energy for the reaction of poly(vinyl alcohol) with formaldehyde (E=17.4 kcal/mole); it was postulated that the observed difference is associated with the lower dipole moment of formaldehyde when compared with the other aldehydes, and with a lower energy for the reaction of this aldehyde with a proton.

     

Keywords

Alcohol Acetaldehyde Formaldehyde Aqueous Solution Activation Energy 
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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Literature cited

  1. 1.
    S. N. Ushakov, Polyvinyl Alcohol and Its Derivatives [in Russian] (Izd. AN SSSR, Moscow-Leningrad, 1960).Google Scholar
  2. 2.
    G. Smets and B. Petit, Makromol. Chem.,33, 41 (1959).Google Scholar
  3. 3.
    I. Ya. Kantorovich-Shelomkova, I. N. Vlodavets, and P. A. Rebinder, Kolloid. Zh.,25, 441 (1963).Google Scholar
  4. 4.
    G. N. Kormanovskaya and I. N. Vlodavets, Izv. AN SSSR, Ser. Khim.,1964, 1748.Google Scholar
  5. 5.
    A. I. Gel'bshtein, G. G. Shcheglova, and M. I. Temkin, Zh. neorg. khim.,1, 506 (1956).Google Scholar
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    Ya. K. Syrkin and M. E. Dyatkina, The Chemical Bond and Structure of Molecules [in Russian] (Goskhimizdat, Moscow-Leningrad, 1946), p. 263.Google Scholar

Copyright information

© Consultants Bureau Enterprises, Inc. 1966

Authors and Affiliations

  • G. N. Kormanovskaya
    • 1
  • I. N. Vlodavets
    • 1
  1. 1.Institute of Physical ChemistryAcademy of Sciences of the USSRUSSR

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