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Lütgert J, Vorberger J, Hartley NJ, et al. Measuring the structure and equation of state of polyethylene terephthalate at megabar pressures. Sci Rep. 2021;11(1):12883doi: 10.1038/s41598-021-91769-0.
Lütgert, J., Vorberger, J., Hartley, N. J., Voigt, K., Rödel, M., Schuster, A. K., Benuzzi-Mounaix, A., Brown, S., Cowan, T. E., Cunningham, E., Döppner, T., Falcone, R. W., Fletcher, L. B., Galtier, E., Glenzer, S. H., Laso Garcia, A., Gericke, D. O., Heimann, P. A., Lee, H. J., McBride, E. E., Pelka, A., Prencipe, I., Saunders, A. M., Schölmerich, M., Schörner, M., Sun, P., Vinci, T., Ravasio, A., & Kraus, D. (2021). Measuring the structure and equation of state of polyethylene terephthalate at megabar pressures. Scientific reports, 11(1), 12883. https://doi.org/10.1038/s41598-021-91769-0
Lütgert, J, et al. "Measuring the structure and equation of state of polyethylene terephthalate at megabar pressures." Scientific reports vol. 11,1 (2021): 12883. doi: https://doi.org/10.1038/s41598-021-91769-0
Lütgert J, Vorberger J, Hartley NJ, Voigt K, Rödel M, Schuster AK, Benuzzi-Mounaix A, Brown S, Cowan TE, Cunningham E, Döppner T, Falcone RW, Fletcher LB, Galtier E, Glenzer SH, Laso Garcia A, Gericke DO, Heimann PA, Lee HJ, McBride EE, Pelka A, Prencipe I, Saunders AM, Schölmerich M, Schörner M, Sun P, Vinci T, Ravasio A, Kraus D. Measuring the structure and equation of state of polyethylene terephthalate at megabar pressures. Sci Rep. 2021 Jun 18;11(1):12883. doi: 10.1038/s41598-021-91769-0. PMID: 34145307; PMCID: PMC8213800.
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Sci Rep. 2021 Jun 18;11(1):12883. doi: 10.1038/s41598-021-91769-0.

Measuring the structure and equation of state of polyethylene terephthalate at megabar pressures.

Scientific reports

J Lütgert, J Vorberger, N J Hartley, K Voigt, M Rödel, A K Schuster, A Benuzzi-Mounaix, S Brown, T E Cowan, E Cunningham, T Döppner, R W Falcone, L B Fletcher, E Galtier, S H Glenzer, A Laso Garcia, D O Gericke, P A Heimann, H J Lee, E E McBride, A Pelka, I Prencipe, A M Saunders, M Schölmerich, M Schörner, P Sun, T Vinci, A Ravasio, D Kraus

Affiliations

  1. Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328, Dresden, Germany. [email protected].
  2. Institute for Solid State and Materials Physics, Technische Universität Dresden, 01069, Dresden, Germany. [email protected].
  3. Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328, Dresden, Germany.
  4. SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
  5. Institute for Solid State and Materials Physics, Technische Universität Dresden, 01069, Dresden, Germany.
  6. LULI, CNRS, CEA, Sorbonne Université, Ecole Polytechnique - Institut Polytechnique de Paris, 91128, Palaiseau, France.
  7. Institute of Nuclear and Particle Physics, Technische Universität Dresden, 01069, Dresden, Germany.
  8. Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA.
  9. Department of Physics, University of California, Berkeley, CA, 94720, USA.
  10. Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
  11. CFSA, Department of Physics, University of Warwick, Coventry, CV4 7AL, UK.
  12. European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany.
  13. Institut für Physik, Albert-Einstein-Str. 23, Universität Rostock, 18059, Rostock, Germany.

PMID: 34145307 PMCID: PMC8213800 DOI: 10.1038/s41598-021-91769-0

Abstract

We present structure and equation of state (EOS) measurements of biaxially orientated polyethylene terephthalate (PET, [Formula: see text], also called mylar) shock-compressed to ([Formula: see text]) GPa and ([Formula: see text]) K using in situ X-ray diffraction, Doppler velocimetry, and optical pyrometry. Comparing to density functional theory molecular dynamics (DFT-MD) simulations, we find a highly correlated liquid at conditions differing from predictions by some equations of state tables, which underlines the influence of complex chemical interactions in this regime. EOS calculations from ab initio DFT-MD simulations and shock Hugoniot measurements of density, pressure and temperature confirm the discrepancy to these tables and present an experimentally benchmarked correction to the description of PET as an exemplary material to represent the mixture of light elements at planetary interior conditions.

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