Journal article
Acoustic properties of Kel F-800 copolymer up to 85 GPa
The Journal of chemical physics, Vol.137(1), pp.014514-014514
07/07/2012
DOI: 10.1063/1.4731706
PMID: 22779672
Abstract
Acoustic properties of the fluorinated copolymer Kel F-800 were determined with Brillouin spectroscopy up to pressures of 85 GPa at 300 K. This research addresses outstanding issues in high-pressure polymer behavior, as to date the acoustic properties and equation of state of any polymer have not been determined above 20 GPa. We observed both longitudinal and transverse modes in all pressure domains, allowing us to calculate the C-11 and C-12 moduli, bulk, shear, and Young's moduli, and the density of Kel F-800 as a function of pressure. We found the behavior of the polymer with respect to all parameters to change drastically with pressure. As a result, we find that the data are best understood when split into two pressure regimes. At low pressures (less than similar to 5 GPa), analysis of the room temperature isotherm with a semi-empirical equation of state yielded a zero-pressure bulk modulus K-o and its derivative K-0' of 12.8 +/- 0.8 GPa and 9.6 +/- 0.7, respectively. The same analysis for the higher pressure data yielded values for K-o and K-0(') of 34.9 +/- 1.7 GPa and 5.1 +/- 0.1, respectively. We discuss this significant difference in behavior with reference to the concept of effective free volume collapse. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4731706]
Details
- Title: Subtitle
- Acoustic properties of Kel F-800 copolymer up to 85 GPa
- Creators
- Ari S. Benjamin - Williams CollegeMuhtar Ahart - Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USAStephen A. Gramsch - Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USALewis L. Stevens - Los Alamos Natl Lab, Dynam & Energet Mat Div, Los Alamos, NM 87545 USAE. Bruce Orler - Los Alamos Natl Lab, Dynam & Energet Mat Div, Los Alamos, NM 87545 USADana M. Dattelbaum - Los Alamos Natl Lab, Dynam & Energet Mat Div, Los Alamos, NM 87545 USARussell J. Hemley - Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA
- Resource Type
- Journal article
- Publication Details
- The Journal of chemical physics, Vol.137(1), pp.014514-014514
- Publisher
- Amer Inst Physics
- DOI
- 10.1063/1.4731706
- PMID
- 22779672
- ISSN
- 0021-9606
- eISSN
- 1089-7690
- Number of pages
- 7
- Grant note
- UNLV LLNL DOE-NNSA; National Nuclear Security Administration; United States Department of Energy (DOE) DOE-BES; United States Department of Energy (DOE) NSF; National Science Foundation (NSF) DE-FC03-03NA00144 / CDAC, Carnegie/DOE Alliance Center; United States Department of Energy (DOE) CIW CDAC; United States Department of Energy (DOE)
- Language
- English
- Date published
- 07/07/2012
- Academic Unit
- Pharmaceutical Sciences and Experimental Therapeutics
- Record Identifier
- 9984365903502771
Metrics
14 Record Views