https://doi.org/10.1140/epje/i2013-13024-1
Regular Article
Localized translational motions in semicrystalline poly(ethylene terephthalate) studied by incoherent quasielastic neutron scattering
19838
Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006, Madrid, Spain
29838
Institut Laue-Langevin, BP 156-38042, Grenoble Cedex 9, France
39838
Instituto de Ciencia de Materiales de Aragón ICMA-CSIC (CSIC-Universidad de Zaragoza), C/Pedro Cerbuna 12, 50009, Zaragoza, Spain
* e-mail: alejandro.sanz@csic.es
Received:
26
October
2012
Revised:
25
January
2013
Accepted:
21
February
2013
Published online:
19
March
2013
One of the simplest ways to confine polymeric materials is by self-assembling during the crystallization process. The remaining amorphous phase is then constrained by the lamellar crystals. In this manuscript, we aim to shed additional light in the understanding of the amorphous chains dynamics of semicrystalline polymers above the Tg by using incoherent quasielastic neutron scattering QENS in a nanoscopic time scale (10-9-10-10s) on poly(ethylene terephthalate). The observed dynamics is satisfactorily described by a theoretical model that considers that the proton mobility follows a random jump-diffusion in a restricted environment. We demonstrate that the combination of macroscopic with nanoscopic dynamic tools allows a complete description of the confined dynamics on a paradigmatic semicrystalline polymer like poly(ethylene terephthalate).
Key words: Soft Matter: Polymers and Polyelectrolytes
© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2013