| Autor: |
Patrick Drawe, Nils Lüttschwager, Martin Suhm |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
ScienceOpen Research (2014) |
| Druh dokumentu: |
article |
| ISSN: |
2199-1006 |
| DOI: |
10.14293/S2199-1006.1.SOR-MATSCI.AKA0J6.v2 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
