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ScienceOpen, ScienceOpen Research, 2014

DOI: 10.14293/s2199-1006.1.sor-matsci.aka0j6.v2

ScienceOpen Material Science

DOI: 10.14293/s2199-1006.1.sor-matsci.aka0j6.v1.rufgyy

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The elastic modulus of isolated polytetrafluoroethylene filaments

Journal article published in 2014 by Patrick Drawe ORCID, Nils Lüttschwager ORCID, Martin Suhm ORCID, Nils L�ttschwager ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We report vibrational Raman spectra of small extended perfluoro-n-alkanes (C{n}F{2n+2} with n=6, 8-10, 12-14) isolated in supersonic jet expansions and use wavenumbers of longitudinal acoustic vibrations to extrapolate the elastic modulus of cold, isolated polytetrafluoroethylene filaments. The derived value E = 209(10) GPa defines an upper limit for the elastic modulus of the perfectly crystalline, non-interacting polymer at low temperatures and serves as a benchmark for quantum chemical predictions.