Authors: Emmons, E.D.¹; Velisavljevic, N.²; Schoonover, J.R.³; Dattelbaum, D.M.²

Source: Applied Spectroscopy, Volume 62, Issue 2, Pages 32A-72A and 133-257 (February 2008) , pp. 142-148(7)

Publisher: Society for Applied Spectroscopy

Abstract:

High-pressure Raman spectroscopy and X-ray diffraction of THV 500, a terpolymer of tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride, were performed using diamond anvil cells (DAC). Changes in the interatomic spacing as well as shifts of several of the vibrational bands as a function of pressure were measured up to ∼10 GPa. The changes in interatomic spacing and shifts of the vibrational bands are compared to those of polytetrafluoroethylene, showing the effects of copolymerization and reduced crystallinity. The high-pressure behavior of polymers is a relatively unexplored field but is becoming increasingly important due to applications where polymers experience extreme conditions.

Keywords: HIGH PRESSURE; X-RAY DIFFRACTION; RAMAN SPECTROSCOPY; FLUOROPOLYMERS

Document Type: Research article

DOI: http://dx.doi.org/10.1366/000370208783575573

Affiliations: 1: Materials Science and Technology Division, MS E549, Los Alamos National Laboratory, Los Alamos, New Mexico 87545; Department of Physics and Nevada Terawatt Facility, MS 220, University of Nevada, Reno, Reno, Nevada 89557 2: Dynamic and Energetic Materials Division, MS P952, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 3: Materials Science and Technology Division, MS E549, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

Publication date: 2008-02-01

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