Impact of composition on the crystal texture and on the dynamics of P(THF-co-ECH) copolymers
| Autor: | Jon Maiz, Ester Verde-Sesto, Isabel Asenjo-Sanz, Fanni Juranyi, José A. Pomposo, Arantxa Arbe, Juan Colmenero |
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| Přispěvatelé: | Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Eusko Jaurlaritza, Ikerbasque Basque Foundation for Science |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Popis: | QENS/WINS 2022 – 15th Edition of the QENS Series and 10th of the WINS Workshops. 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. We acknowledge the Grant PID2021-123438NB-I00 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”. We also acknowledge the financial support of Eusko Jaurlaritza, code : IT-1566-22 and from the IKUR Strategy under the collaboration agreement between Ikerbasque Foundation and the Materials Physics Center on behalf of the Department of Education of the Basque Government. |
| Databáze: | OpenAIRE |
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