Mechanics of Composite Materials

, Volume 54, Issue 6, pp 815–820 | Cite as

Low-Temperature Local Dissipative Processes in Polyvinyl Alcohol

  • V. A. Lomovskoy
  • N. A. AbaturovaEmail author
  • N. Yu. Lomovskaya
  • O. A. Khlebnikova

The spectra of internal friction and temperature variation in the frequency of free damped torsional vibrations excited in a polyvinyl alcohol (PVA) sample in the temperature range from –150 to 0°C were investigated. Several local dissipative processes of low intensity were detected in the spectrum in the temperature range from –150 to –90°C and one more intense dissipative process in the temperature range from –70 to 0°C. According to these processes, deviations from the linear change in frequency of the vibration process were observed in the temperature-frequency relations in these temperature ranges. The mechanisms of internal friction for each of the dissipative processes are considered, and their probable structural interpretation is proposed. The defects of shear modulus arising in these processes are determined, and their contribution to the shear modulus of the entire PVA system is evaluated.


spectra of internal friction defect of shear modulus relaxation dissipative processes 


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • V. A. Lomovskoy
    • 1
  • N. A. Abaturova
    • 1
    Email author
  • N. Yu. Lomovskaya
    • 1
  • O. A. Khlebnikova
    • 1
  1. 1.Russian Academy of Sciences, A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, RAS (IPCE RAS)Moscow GSP-1Russia

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