Abstract
The temperature dependence of the far-IR spectra of glassy polymethylmethacrylate is studied in the range of ν = 10–130 cm–1 at temperatures from 90 to 420 K. The analysis of the spectra revealed absorption corresponding to two rapid relaxation processes: (1) 180°-rotation of the OCO plane of the side groups and (2) reorientation of the links of the main chain. The activation energies of these processes are determined.
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Original Russian Text © V.A. Ryzhov, 2017, published in Fizika Tverdogo Tela, 2017, Vol. 59, No. 7, pp. 1422–1425.
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Ryzhov, V.A. Study of fast relaxation in a glassy polymer by far-IR spectroscopy. Phys. Solid State 59, 1450–1453 (2017). https://doi.org/10.1134/S106378341707023X
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DOI: https://doi.org/10.1134/S106378341707023X