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Título: | The β relaxation as a probe to follow real-time polymer crystallization in model aliphatic polyesters |
Autor: | Soccio, Michelina CSIC ORCID; Nogales, Aurora CSIC ORCID; Lotti, Nadia; Munari, Andrea; Ezquerra, Tiberio A. CSIC ORCID | Fecha de publicación: | 2007 | Editor: | Elsevier | Citación: | Polymer 48: 4742- 4750 (2007) | Resumen: | The dielectric spectra of two aliphatic polyesters, poly(propylene succinate) and poly(propylene adipate), are reported. For these two model aliphatic polyesters the α and β relaxations appear simultaneously and well resolved in the experimental frequency window. During isothermal crystallization, this fact allows one to use the β relaxation to characterize the crystalline structural development while the α relaxation provides information about the evolution of the amorphous phase dynamics. In this way structural development and dynamics evolution can be characterized by a single experiment during the crystallization process. Additionally, the unambiguous determination, in the amorphous polymers, of the relaxation times for the α and β relaxations further support a close relationship between local and segmental dynamics in polyesters as proposed by the coupling model. © 2007 Elsevier Ltd. All rights reserved. | URI: | http://hdl.handle.net/10261/78137 | DOI: | 10.1016/j.polymer.2007.05.075 | Identificadores: | doi: 10.1016/j.polymer.2007.05.075 issn: 0032-3861 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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