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Evidence for crystalline structure in dynamically-compressed polyethylene up to 200 GPa
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(2019) Evidence for crystalline structure in dynamically-compressed polyethylene up to 200 GPa. Scientific Reports, 9 (1). 4196. doi:10.1038/s41598-019-40782-5 ISSN 2045-2322.
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WRAP-evidence-crystalline-structure-dynamically-compressed-Gericke-2020.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2016Kb) | Preview |
Official URL: https://doi.org/10.1038/s41598-019-40782-5
Abstract
We investigated the high-pressure behavior of polyethylene (CH2) 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 A2/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.
Item Type: | Journal Article | |||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||
SWORD Depositor: | Library Publications Router | |||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Polyethylene , X-ray diffraction imaging, Crystalline polymers, Chemical bonds | |||||||||||||||||||||||||||||||||
Journal or Publication Title: | Scientific Reports | |||||||||||||||||||||||||||||||||
Publisher: | Nature Publishing Group | |||||||||||||||||||||||||||||||||
ISSN: | 2045-2322 | |||||||||||||||||||||||||||||||||
Official Date: | 12 March 2019 | |||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 9 | |||||||||||||||||||||||||||||||||
Number: | 1 | |||||||||||||||||||||||||||||||||
Article Number: | 4196 | |||||||||||||||||||||||||||||||||
DOI: | 10.1038/s41598-019-40782-5 | |||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||
Reuse Statement (publisher, data, author rights): | ** From Europe PMC via Jisc Publications Router ** History: ppub 01-03-2019; epub 12-03-2019. ** Licence for this article: cc by | |||||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 15 January 2020 | |||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 29 January 2020 | |||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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