Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/202989
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | How Confinement Affects the Nucleation, Crystallization, and Dielectric Relaxation of Poly(butylene succinate) and Poly(butylene adipate) Infiltrated within Nanoporous Alumina Templates |
Autor: | Safari, M.; Maiz, J.; Shi, G.; Juanes, Diana CSIC; Liu, G.; Wang, D.; Mijangos, Carmen CSIC ORCID; Alegría, Ángel CSIC ORCID ; Müller, A.J. | Fecha de publicación: | 2019 | Editor: | American Chemical Society | Citación: | Langmuir: the ACS journal of surfaces and colloids 35: 15168- 15179 (2019) | Resumen: | This work describes the successful melt infiltration of poly(butylene succinate) (PBS) and poly(butylene adipate) (PBA) within 70 nm diameter anodic aluminum oxide (AAO) templates. The infiltrated samples were characterized by SEM, Raman, and FTIR spectroscopy. The crystallization behaviors and crystalline structures of both polymers, bulk and confined, were analyzed by differential scanning calorimetry (DSC) and grazing incidence wide angle X-ray scattering (GIWAXS). DSC revealed that a change in the nucleation process occurred from heterogeneous nucleation for bulk samples to homogeneous nucleation for infiltrated PBA and to surface-induced nucleation for infiltrated PBS. GIWAXS results indicate that PBS nanofibers crystallize in the α-phase, as well as their bulk samples. However, PBA nanofibers crystallize just in the β-phase, whereas PBA bulk samples crystallize in a mixture of α- and β-phases. The crystal orientation within the pores was determined, and differences between PBS and PBA were also found. Finally, broadband dielectric spectroscopy was applied to study the segmental dynamics for bulk and infiltrated samples. The glass temperature was found to significantly decrease in the PBS case upon infiltration, while that of PBA remained unchanged. These differences were correlated with the higher affinity of PBS to the AAO walls than PBA, in accordance with their nucleation behavior (surface-induced versus homogeneous nucleation, respectively). | Versión del editor: | http://dx.doi.org/10.1021/acs.langmuir.9b02215 | URI: | http://hdl.handle.net/10261/202989 | DOI: | 10.1021/acs.langmuir.9b02215 | Identificadores: | doi: 10.1021/acs.langmuir.9b02215 issn: 0743-7463 issn: 1520-5827 |
Aparece en las colecciones: | (ICTP) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
16
checked on 17-abr-2024
WEB OF SCIENCETM
Citations
16
checked on 21-feb-2024
Page view(s)
129
checked on 24-abr-2024
Download(s)
15
checked on 24-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.