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Effect of Microwave Irradiation on the Microinhomogeneity of α-Relaxation Processes in Polyvinyl Alcohol

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Mechanics of Composite Materials Aims and scope

The internal friction spectra λ = f(T) and the temperature dependence ν = f(T) of the frequency of free damping in the temperature range from –150°C to 120°C of microwave-irradiated and nonirradiated samples of polyvinyl alcohol were obtained. A theoretical analysis of nature of the peak located on the ascending branch of the α-peak of relaxation losses on the internal friction spectrum is carried out, and its disappearance after the microwave irradiation is explained. A comparison of changes in the continuous spectrum of relaxation times in the region of glass-transition temperature is performed. It is established that microwave irradiation expands the spectrum of relaxation time, and, consequently, increases the relaxation microinhomogeneity of the α-relaxation process.

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Authors and Affiliations

  1. A. N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, Moscow, Russia

    V. A. Lomovskoy, N. V. Nekrasova, N. Yu. Lomovskaya, O. A. Khlebnikova, N. A. Abaturova, T. B. Galushko & A. M. Gorbunov

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  1. V. A. Lomovskoy
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  2. N. V. Nekrasova
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  3. N. Yu. Lomovskaya
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  4. O. A. Khlebnikova
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  5. N. A. Abaturova
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  6. T. B. Galushko
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  7. A. M. Gorbunov
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Correspondence to V. A. Lomovskoy.

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Translated from Mekhanika Kompozitnykh Materialov, Vol. 56, No. 5, pp. 993-1006, September-October, 2020.

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Lomovskoy, V.A., Nekrasova, N.V., Lomovskaya, N.Y. et al. Effect of Microwave Irradiation on the Microinhomogeneity of α-Relaxation Processes in Polyvinyl Alcohol. Mech Compos Mater 56, 685–694 (2020). https://doi.org/10.1007/s11029-020-09913-2

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  • DOI: https://doi.org/10.1007/s11029-020-09913-2

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