Evolution of molecular structure of a dehydrofluorinated poly(vinylidene fluoride) film during its aging

FTIR spectra of a dehydrofluorinated poly(vinylidene fluoride) film were registered at different stages of its aging. A number of spectral features were noticed to grow with the sample aging. Three of them were assigned to the stretching vibrations of triple carbon-carbon bonds. Other bands were ass...

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Bibliographic Details
Published in:Results in materials 2021-03, Vol.9, p.100163, Article 100163
Main Authors: Zhivulin, V.E., Khairanov, R. Kh, Zlobina, N.A., Doroshenko, O.P., Evsyukov, S.E., Doroshenko, I. Yu, Pesin, L.A.
Format: Article
Language:English
Subjects:
Aging
Dehydrofluorinated PVDF
FTIR spectra
Triple carbon-carbon bonds
Water cluster
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Summary:FTIR spectra of a dehydrofluorinated poly(vinylidene fluoride) film were registered at different stages of its aging. A number of spectral features were noticed to grow with the sample aging. Three of them were assigned to the stretching vibrations of triple carbon-carbon bonds. Other bands were assigned to the libration, stretching, and combination vibrations of embedded water clusters consisting of 4, 5, or 6 molecules. The mechanism explaining synchronous formation of triple carbon-carbon bonds and small water clusters in the sample during its aging is proposed. SEM data on the surface morphology of the sample confirm the proposed mechanism. [Display omitted] •Three of the spectral features were assigned to the stretching vibrations of triple carbon-carbon bonds.•Other bands appear due to the vibrations of embedded water clusters.•The mechanism explaining the variations is proposed.
ISSN:2590-048X
2590-048X
DOI:10.1016/j.rinma.2020.100163