Hugoniot equation of state of polymers

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The Hugoniot equations of state of a large number of representative polymers have been obtained. Two aspects of the results are particularly striking: (1) The u{sub s}(u{sub p}) Hugoniots of all the polymers extrapolate to bulk sound velocities higher than the ultrasonic values, an indication of a rapidly varying rate of change of compressibility in this region. This is attributed both to the two-dimensional nature of polymer compression and to the form of the interchain interaction potential. (2) A relatively high pressure transformation (in the range 20-30 GPa), characterized by a change in slope of the u{sub s}(u{sub p}) Hugoniot ... continued below

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25 p.

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Carter, W.J. & Marsh, S.P. July 1, 1995.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 27 times , with 4 in the last month . More information about this report can be viewed below.

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Description

The Hugoniot equations of state of a large number of representative polymers have been obtained. Two aspects of the results are particularly striking: (1) The u{sub s}(u{sub p}) Hugoniots of all the polymers extrapolate to bulk sound velocities higher than the ultrasonic values, an indication of a rapidly varying rate of change of compressibility in this region. This is attributed both to the two-dimensional nature of polymer compression and to the form of the interchain interaction potential. (2) A relatively high pressure transformation (in the range 20-30 GPa), characterized by a change in slope of the u{sub s}(u{sub p}) Hugoniot and sometime by a large volume change as well, is observed for all of the polymers. This transformation is probably associated with pressure-induced cross bonding. In particular, for those polymers which contain rings in their monomer structure and which display the largest volume change at transformation, it is proposed that carbon-carbon covalent bonds along chains are broken and tetragonal bonds between chains are formed in a manner analogous to the graphite-diamond transformation.

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25 p.

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OSTI as DE95016708

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  • Other Information: PBD: Jul 1995

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  • Other: DE95016708
  • Report No.: LA--13006-MS
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/95183 | External Link
  • Office of Scientific & Technical Information Report Number: 95183
  • Archival Resource Key: ark:/67531/metadc793684

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  • July 1, 1995

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  • Dec. 19, 2015, 7:14 p.m.

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  • Feb. 25, 2016, 7:18 p.m.

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Carter, W.J. & Marsh, S.P. Hugoniot equation of state of polymers, report, July 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc793684/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.