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{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.

Publisher

ScienceOpen

Reference29 articles.

1. Elastic moduli of oriented polymers. I. The simple helix, polyethylene, polytetrafluoroethylene, and a general formula;Shimanouchi T, Asahina M, Enomoto S;J Polym Sci,1962

2. Vibrations in teflon;LaGarde V, Prask H, Trevino S;Discuss Faraday Soc,1969

3. Relation between the polymer conformation and the elastic modulus of the crystalline region of polymer;Sakurada I, Kaji K;J Polym Sci Part C Polym Symp,1970

4. Longitudinal acoustic modes of polytetrafluoroethylene copolymers and oligomers;Rabolt J, Fanconi B;Polymer,1977

5. Density-functional calculations of the elastic properties of some polymer chains;Bartha F, Bogár F, Peeters A, Van Alsenoy C, Van Doren V;Phys Rev B Condens Matter Mater Phys,2000

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