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Optics and Spectroscopy, 2019, Volume 127, Issue 6, Pages 895–899
DOI: https://doi.org/10.21883/OS.2019.12.48682.340-18 (Mi os513) 		 
This article is cited in 6 scientific papers (total in 6 papers)

Spectroscopy of condensed matter

A study of low-energy processes in polymethyl methacrylate and its short-chain oligomers by terahertz IR and Raman spectroscopies

V. A. Ryzhov

Ioffe Institute, 194021, St. Petersburg, Russia
Citations (6)
DOI: https://doi.org/10.21883/OS.2019.12.48682.340-18
Abstract: Based on the data of low-frequency (terahertz) IR and Raman spectroscopies, it is established that low-energy vibrational excitations in PMMA and its oligomers with a degree of polymerization n = 2, 7, 9, and 50 are due to correlated small-angle torsional–vibrational dynamics, which prepares the relaxational mobility of macromolecules. The minimum size of the chain segment (“torsional–vibrational segment”), the spectrum of which is identical to the spectrum of the high-molecular polymer, is determined.
Keywords: Raman spectroscopy, low-energy vibrational excitations, relaxation mobility, PMMA oligomers.
Received: 27.11.2018
Revised: 02.09.2019
Accepted: 03.09.2019
English version:
Optics and Spectroscopy, 2019, Volume 127, Issue 6, Pages 979–983
DOI: https://doi.org/10.1134/S0030400X1912021X
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: V. A. Ryzhov, “A study of low-energy processes in polymethyl methacrylate and its short-chain oligomers by terahertz IR and Raman spectroscopies”, Optics and Spectroscopy, 127:6 (2019), 895–899; Optics and Spectroscopy, 127:6 (2019), 979–983
Citation in format AMSBIB
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\by V.~A.~Ryzhov
\paper A study of low-energy processes in polymethyl methacrylate and its short-chain oligomers by terahertz IR and Raman spectroscopies
\jour Optics and Spectroscopy
\yr 2019
\vol 127
\issue 6
\pages 895--899
\mathnet{http://mi.mathnet.ru/os513}
\crossref{https://doi.org/10.21883/OS.2019.12.48682.340-18}
\elib{https://elibrary.ru/item.asp?id=42571235}
\transl
\jour Optics and Spectroscopy
\yr 2019
\vol 127
\issue 6
\pages 979--983
\crossref{https://doi.org/10.1134/S0030400X1912021X}
Linking options:
  • https://www.mathnet.ru/eng/os513
  • https://www.mathnet.ru/eng/os/v127/i6/p895
    • This publication is cited in the following 6 articles:
    1. Valery A Ryzhov, “Excess Density of Vibrational States at Terahertz Frequencies in the IR Spectra of Glassy Polymers”, Journal of Macromolecular Science, Part B, 2024, 1  crossref
    2. V. M. Syutkin, V. L. Vyazovkin, S. Grebenkin, “Study of oxygen transport in glassy polymers on a nanometer length scale utilizing the kinetic Monte Carlo simulations”, The Journal of Chemical Physics, 161:8 (2024)  crossref
    3. Valery A. Ryzhov, “Manifestation of the Relationship Between Molecular Relaxation Processes and Vibrational Dynamics of Polymers at Terahertz Frequencies in Their IR Spectra”, Journal of Macromolecular Science, Part B, 61:9 (2022), 1166  crossref
    4. V. A. Ryzhov, “Universal Features of Manifestation of Relationship between Local and Segmental Dynamics of Glassy Polymers at Terahertz Frequencies in IR Spectra”, Opt. Spectrosc., 130:12 (2022), 605  crossref
    5. V. A. Ryzhov, “Free rotation of simple molecules and characteristic temperatures in glassy polymers”, Optics and Spectroscopy, 130:2 (2022), 68–72  mathnet  mathnet  crossref  crossref
    6. Vladimir M. Syutkin, Vladimir L. Vyazovkin, Sergey Grebenkin, “Oxygen Diffusion in Glassy Poly(ethyl methacrylate): Spatial Correlation of Jump Rates”, Macromolecules, 54:21 (2021), 10059  crossref
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