Deuterium NMR lineshape and relaxation study of a hydrated cross-linked polymer
| Autor: | Carlos A. Martín, A. Fiñana, H. F. Azurmendi, Maximo Elias Ramia |
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| Rok vydání: | 2002 |
| Předmět: |
Deuterium NMR
Physics::Biological Physics Quantitative Biology::Biomolecules Diglycidyl ether Chemistry Diffusion Relaxation (NMR) Spin–lattice relaxation Analytical chemistry Atomic and Molecular Physics and Optics Spin–spin relaxation chemistry.chemical_compound Phase (matter) Differential thermal analysis |
| Zdroj: | Applied Magnetic Resonance. 22:321-334 |
| ISSN: | 1613-7507 0937-9347 |
| DOI: | 10.1007/bf03166114 |
| Popis: | A combined study of2H nuclear magnetic resonance lineshape and spin-lattice and spin-spin relaxation times as functions of temperature and the amount of hydration water in a cross-linked copolymer of sucrose and 1,4-butadienol diglycidyl ether in the hydrogel phase is reported. The results show strong evidence that the onset of the relaxation mechanisms is driven by anomalous water molecule diffusion depending on both temperature and the hydration degree of the hydrogel. In addition, these results are correlated with the transitions observed by differential thermal analysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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