| Issue |
EPJ Web Conf.
Volume 272, 2022
QENS/WINS 2022 – 15th Edition of the QENS Series and 10th of the WINS Workshops
|
|
|---|---|---|
| Article Number | 01005 | |
| Number of page(s) | 6 | |
| Section | QENS | |
| DOI | https://doi.org/10.1051/epjconf/202227201005 | |
| Published online | 17 November 2022 | |
https://doi.org/10.1051/epjconf/202227201005
Impact of composition on the crystal texture and on the dynamics of P(THF-co-ECH) copolymers
1
Centro de Física de Materiales (CFM) (CSIC-UPV/EHU)-Materials Physics Center (MPC), Paseo Manuel de Lardizábal 5, 20018 Donostia-San Sebastián, Spain
2
IKERBASQUE-Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
3
Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
4
Departamento de Polímeros y Materiales Avanzados: Física, Química y Tecnología, Universidad del País Vasco-Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia-San Sebastián, Spain
5
Donostia International Physics Center, Paseo Manuel de Lardizábal 4, 20018, Donostia-San Sebastián, Spain
* Corresponding author: jon.maizs@ehu.eus
Published online: 17 November 2022
We present a combined study by quasielastic neutron scattering (QENS), differential scanning calorimetry (DSC) and wide angle X-ray scattering (WAXS) on poly(tetrahydrofuran-co-epichlorohydrin) copolymers, to see how their composition can be used to tune their crystallizability and to elucidate the impact of this factor on the dynamical properties. QENS reveals a strong effect on the local dynamics upon cooling down, where the local motions of a sample that remains in the supercooled state at lower temperatures are less Gaussian and slower than those in a sample that crystallizes a few degrees below. This can be attributed to the enhancement of local heterogeneities in the former, which could be a determining factor preventing crystallization.
© The Authors, published by EDP Sciences, 2022
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