Evidence for Crystalline Structure in Dynamically-Compressed Polyethylene up to 200 GPa
Abstract
Abstract We investigated the high-pressure behavior of polyethylene (CH 2 ) by probing dynamically-compressed samples with X-ray diffraction. At pressures up to 200 GPa, comparable to those present inside icy giant planets (Uranus, Neptune), shock-compressed polyethylene retains a polymer crystal structure, from which we infer the presence of significant covalent bonding. The A 2 /m structure which we observe has previously been seen at significantly lower pressures, and the equation of state measured agrees with our findings. This result appears to contrast with recent data from shock-compressed polystyrene (CH) at higher temperatures, which demonstrated demixing and recrystallization into a diamond lattice, implying the breaking of the original chemical bonds. As such chemical processes have significant implications for the structure and energy transfer within ice giants, our results highlight the need for a deeper understanding of the chemistry of high pressure hydrocarbons, and the importance of better constraining planetary temperature profiles.
- Authors:
- more »
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1619502
- Alternate Identifier(s):
- OSTI ID: 1505422
- Grant/Contract Number:
- AC02-76SF00515; VH-NG-1141; 16K17846; AC52-07NA27344; SC0018298; 05P15RDFA1; SF00515
- Resource Type:
- Published Article
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Name: Scientific Reports Journal Volume: 9 Journal Issue: 1; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Hartley, N. J., Brown, S., Cowan, T. E., Cunningham, E., Döppner, T., Falcone, R. W., Fletcher, L. B., Frydrych, S., Galtier, E., Gamboa, E. J., Laso Garcia, A., Gericke, D. O., Glenzer, S. H., Granados, E., Heimann, P. A., Lee, H. J., MacDonald, M. J., MacKinnon, A. J., McBride, E. E., Nam, I., Neumayer, P., Pak, A., Pelka, A., Prencipe, I., Ravasio, A., Rödel, M., Rohatsch, K., Saunders, A. M., Schölmerich, M., Schörner, M., Schuster, A. K., Sun, P., van Driel, T., Vorberger, J., and Kraus, D. Evidence for Crystalline Structure in Dynamically-Compressed Polyethylene up to 200 GPa. United Kingdom: N. p., 2019.
Web. doi:10.1038/s41598-019-40782-5.
Hartley, N. J., Brown, S., Cowan, T. E., Cunningham, E., Döppner, T., Falcone, R. W., Fletcher, L. B., Frydrych, S., Galtier, E., Gamboa, E. J., Laso Garcia, A., Gericke, D. O., Glenzer, S. H., Granados, E., Heimann, P. A., Lee, H. J., MacDonald, M. J., MacKinnon, A. J., McBride, E. E., Nam, I., Neumayer, P., Pak, A., Pelka, A., Prencipe, I., Ravasio, A., Rödel, M., Rohatsch, K., Saunders, A. M., Schölmerich, M., Schörner, M., Schuster, A. K., Sun, P., van Driel, T., Vorberger, J., & Kraus, D. Evidence for Crystalline Structure in Dynamically-Compressed Polyethylene up to 200 GPa. United Kingdom. https://doi.org/10.1038/s41598-019-40782-5
Hartley, N. J., Brown, S., Cowan, T. E., Cunningham, E., Döppner, T., Falcone, R. W., Fletcher, L. B., Frydrych, S., Galtier, E., Gamboa, E. J., Laso Garcia, A., Gericke, D. O., Glenzer, S. H., Granados, E., Heimann, P. A., Lee, H. J., MacDonald, M. J., MacKinnon, A. J., McBride, E. E., Nam, I., Neumayer, P., Pak, A., Pelka, A., Prencipe, I., Ravasio, A., Rödel, M., Rohatsch, K., Saunders, A. M., Schölmerich, M., Schörner, M., Schuster, A. K., Sun, P., van Driel, T., Vorberger, J., and Kraus, D. Tue .
"Evidence for Crystalline Structure in Dynamically-Compressed Polyethylene up to 200 GPa". United Kingdom. https://doi.org/10.1038/s41598-019-40782-5.
@article{osti_1619502,
title = {Evidence for Crystalline Structure in Dynamically-Compressed Polyethylene up to 200 GPa},
author = {Hartley, N. J. and Brown, S. and Cowan, T. E. and Cunningham, E. and Döppner, T. and Falcone, R. W. and Fletcher, L. B. and Frydrych, S. and Galtier, E. and Gamboa, E. J. and Laso Garcia, A. and Gericke, D. O. and Glenzer, S. H. and Granados, E. and Heimann, P. A. and Lee, H. J. and MacDonald, M. J. and MacKinnon, A. J. and McBride, E. E. and Nam, I. and Neumayer, P. and Pak, A. and Pelka, A. and Prencipe, I. and Ravasio, A. and Rödel, M. and Rohatsch, K. and Saunders, A. M. and Schölmerich, M. and Schörner, M. and Schuster, A. K. and Sun, P. and van Driel, T. and Vorberger, J. and Kraus, D.},
abstractNote = {Abstract We investigated the high-pressure behavior of polyethylene (CH 2 ) by probing dynamically-compressed samples with X-ray diffraction. At pressures up to 200 GPa, comparable to those present inside icy giant planets (Uranus, Neptune), shock-compressed polyethylene retains a polymer crystal structure, from which we infer the presence of significant covalent bonding. The A 2 /m structure which we observe has previously been seen at significantly lower pressures, and the equation of state measured agrees with our findings. This result appears to contrast with recent data from shock-compressed polystyrene (CH) at higher temperatures, which demonstrated demixing and recrystallization into a diamond lattice, implying the breaking of the original chemical bonds. As such chemical processes have significant implications for the structure and energy transfer within ice giants, our results highlight the need for a deeper understanding of the chemistry of high pressure hydrocarbons, and the importance of better constraining planetary temperature profiles.},
doi = {10.1038/s41598-019-40782-5},
journal = {Scientific Reports},
number = 1,
volume = 9,
place = {United Kingdom},
year = {Tue Mar 12 00:00:00 EDT 2019},
month = {Tue Mar 12 00:00:00 EDT 2019}
}
https://doi.org/10.1038/s41598-019-40782-5
Web of Science
Figures / Tables:
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