| Online-Ressource |
Verfasst von: | Chowdhury, Mithun [VerfasserIn]  |
| Freyberg, Paul [VerfasserIn]  |
| Ziebert, Falko [VerfasserIn]  |
| Yang, Arnold C.-M. [VerfasserIn]  |
| Steiner, Ullrich [VerfasserIn]  |
| Reiter, Günter [VerfasserIn]  |
Titel: | Segmental relaxations have macroscopic consequences in glassy polymer films |
Verf.angabe: | Mithun Chowdhury, Paul Freyberg, Falko Ziebert, Arnold C.-M. Yang, Ullrich Steiner, and Günter Reiter |
E-Jahr: | 2012 |
Jahr: | 27 September 2012 |
Umfang: | 5 S. |
Fussnoten: | Gesehen am 27.09.2022 |
Titel Quelle: | Enthalten in: Physical review letters |
Ort Quelle: | College Park, Md. : APS, 1958 |
Jahr Quelle: | 2012 |
Band/Heft Quelle: | 109(2012), 13, Artikel-ID 136102, Seite 1-5 |
ISSN Quelle: | 1079-7114 |
Abstract: | We have investigated the consequences of physical aging in thin spin-coated glassy polystyrene films through detailed dewetting studies. A simultaneous and equally fast exponential decay of dewetting velocity, width, and height of the rim with aging time was observed, which is related to a reduction of residual stresses within such films. The temperature dependence of these decay times followed an Arrhenius behavior, yielding an activation energy of 70±6 kJ/mol, on the same order of magnitude as values for the β-relaxation of polystyrene and for relaxations of surface topographical features. Our results suggest that rearrangements at the level of chain segments are sufficient to partially relax frozen-in out-of-equilibrium local chain conformations, i.e., the cause of residual stresses, and they might also be responsible for macroscopic relaxations at polymer surfaces. |
DOI: | doi:10.1103/PhysRevLett.109.136102 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1103/PhysRevLett.109.136102 |
| Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.109.136102 |
| DOI: https://doi.org/10.1103/PhysRevLett.109.136102 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 180783803X |
Verknüpfungen: | → Zeitschrift |
Segmental relaxations have macroscopic consequences in glassy polymer films / Chowdhury, Mithun [VerfasserIn]; 27 September 2012 (Online-Ressource)