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      The elastic modulus of isolated polytetrafluoroethylene filaments

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          Abstract

          We report vibrational Raman spectra of small extended perfluoro- n-alkanes (C n F 2 n+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, noninteracting polymer at low temperatures and serves as a benchmark for quantum chemical predictions.

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          Most cited references 25

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          The crystal structure of long-chain normal paraffin hydrocarbons. The “shape” of the

           C. BUNN (1939)
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            Structures of Molecules and Crystals of Fluoro-Carbons

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              Longitudinal Acoustical Vibrations of Finite Polymethylene Chains

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                Author and article information

                Affiliations
                [ 1 ]Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany
                Author notes
                [* ]Corresponding author's e-mail address: msuhm@ 123456gwdg.de
                Contributors
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                Journal
                SO-MATSCI
                ScienceOpen Research
                ScienceOpen
                2199-1006
                28 April 2014
                : 0 (ID: bb398bf3-5d4e-4069-b8db-5dcf53481c8a )
                : 0
                : 1-5
                1153:XE 10.14293/A2199-1006.01.SOR-MATSCI.KA0J6.v1
                © 2014 Drawe et al.

                This work has been published open access under Creative Commons Attribution License CC BY 4.0 , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at www.scienceopen.com .

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                Figures: 4, Tables: 2, References: 29, Pages: 5
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