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Necking Instability Caused by Strain Softening of Poly(butylene succinate)

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Abstract

Plastic strain of amorphous poly(butylene succinate) films in stretching was studied. Self-oscillating necking was detected at very low stretching rates, at which, according to the existing concepts, oscillations are impossible. It was concluded that the self-oscillations are a consequence of a previously unknown mechanism of instability of plastic flow.

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ACKNOWLEDGMENTS

This work was supported by the Program of Basic Research of the Russian Academy of Sciences (project no. 0082–2014–0014).

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Authors and Affiliations

  1. Enikolopov Institute of Synthetic Polymer Materials, Russian Academy of Sciences, 117393, Moscow, Russia

    A. S. Kechek’yan & K. Z. Monakhova

  2. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 119991, Moscow, Russia

    S. L. Bazhenov

Authors
  1. A. S. Kechek’yan
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  2. S. L. Bazhenov
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  3. K. Z. Monakhova
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Corresponding authors

Correspondence to A. S. Kechek’yan or S. L. Bazhenov.

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Translated by V. Glyanchenko

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Kechek’yan, A.S., Bazhenov, S.L. & Monakhova, K.Z. Necking Instability Caused by Strain Softening of Poly(butylene succinate). Dokl Phys Chem 485, 50–52 (2019). https://doi.org/10.1134/S0012501619030059

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  • DOI: https://doi.org/10.1134/S0012501619030059

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