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Título: | Universal features of water dynamics in solutions of hydrophilic polymers, biopolymers, and small glass-forming materials |
Autor: | Cerveny, Silvina CSIC ORCID ; Alegría, Ángel CSIC ORCID ; Colmenero de León, Juan CSIC ORCID | Palabras clave: | Biomedical materials Dielectric relaxation Polymer solutions Vitrification Water Biopolymer chemistry Structure of molecular liquids Dielectric loss and relaxation Biopolymerization |
Fecha de publicación: | 17-mar-2008 | Editor: | American Physical Society | Citación: | Physical Review E 77, 031803 (2008). | Resumen: | A systematic investigation by dielectric spectroscopy of 18 different water-rich mixtures with very different hydrophilic substances shows universal features for the water dynamics. The temperature dependence of the relaxation times exhibits a crossover from non-Arrhenius to Arrhenius behavior at the Tg range of the mixtures. Furthermore, the temperature dependence of the relaxation times presents a universal behavior both above and below the crossover temperature. We also show that these features suggest that the observed crossover is associated with the emergence of confinement effects. | Descripción: | 5 pp.-- PACS nrs.: 82.35.Pq, 61.25.Em, 77.22.Gm.-- PMID: 18517410. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevE.77.031803 | URI: | http://hdl.handle.net/10261/7311 | DOI: | 10.1103/PhysRevE.77.031803 | ISSN: | 1539-3755 |
Aparece en las colecciones: | (CFM) Artículos |
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Universal_features.pdf | 178,35 kB | Adobe PDF | Visualizar/Abrir |
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