Polyether Single and Double Crystalline Blends and the Effect of Lithium Salt on Their Crystallinity and Ionic Conductivity
dc.contributor.author | Olmedo Martínez, Jorge L. | |
dc.contributor.author | Pastorio, Michele | |
dc.contributor.author | Gabirondo Amenabar, Elena | |
dc.contributor.author | Lorenzetti, Alessandra | |
dc.contributor.author | Sardon Muguruza, Haritz | |
dc.contributor.author | Mecerreyes Molero, David | |
dc.contributor.author | Müller Sánchez, Alejandro Jesús | |
dc.date.accessioned | 2021-07-21T09:38:57Z | |
dc.date.available | 2021-07-21T09:38:57Z | |
dc.date.issued | 2021-06-25 | |
dc.identifier.citation | Polymers 13(13) : (2021) // Article ID 2097 | es_ES |
dc.identifier.issn | 2073-4360 | |
dc.identifier.uri | http://hdl.handle.net/10810/52542 | |
dc.description.abstract | In this work, blends of Poly(ethylene oxide), PEO, and poly(1,6-hexanediol), PHD, were prepared in a wide composition range. They were examined by Differential Scanning Calorimetry (DSC), Polarized Light Optical Microscopy (PLOM) and Wide Angle X-ray Scattering (WAXS). Based on the results obtained, the blends were partially miscible in the melt and their crystallization was a function of miscibility and composition. Crystallization triggered phase separation. In blends with higher PEO contents both phases were able to crystallize due to the limited miscibility in this composition range. On the other hand, the blends with higher PHD contents display higher miscibility and therefore, only the PHD phase could crystallize in them. A nucleation effect of the PHD phase on the PEO phase was detected, probably caused by a transference of impurities mechanism. Since PEO is widely used as electrolyte in lithium batteries, the PEO/PHD blends were studied with lithium bis(trifluoromethanesulfonyl) imide (LiTFSI), and the effect of Li-salt concentration was studied. We found that the lithium salt preferentially dissolves in the PEO phase without significantly affecting the PHD component. While the Li-salt reduced the spherulite growth rate of the PEO phase within the blends, the overall crystallization rate was enhanced because of the strong nucleating effect of the PHD component. The ionic conductivity was also determined for the blends with Li-salt. At high temperatures (>70 °C), the conductivity is in the order of ~10−3 S cm−1, and as the temperature decreases, the crystallization of PHD was detected. This improved the self-standing character of the blend films at high temperatures as compared to the one of neat PEO. | es_ES |
dc.description.sponsorship | This work has received funding from Basque Government through grant IT1309-19. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | |
dc.subject | polyethers | es_ES |
dc.subject | PEO blends | es_ES |
dc.subject | ionic conductivity | es_ES |
dc.subject | isothermal crystallization rate | es_ES |
dc.title | Polyether Single and Double Crystalline Blends and the Effect of Lithium Salt on Their Crystallinity and Ionic Conductivity | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2021-07-08T14:23:15Z | |
dc.rights.holder | 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/2073-4360/13/13/2097/htm | es_ES |
dc.identifier.doi | 10.3390/polym13132097 | |
dc.departamentoes | Polímeros y Materiales Avanzados: Física, Química y Tecnología | |
dc.departamentoeu | Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia |
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Except where otherwise noted, this item's license is described as 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).