Deuterium NMR lineshape and relaxation study of a hydrated cross-linked polymer

被引：0
|
作者：
Azurmendi, HF
Ramia, ME [1 ]
Fiñana, A
Martín, CA
机构：
[1] Univ Nacl Cordoba, Fac Matemat Astron & Fis, RA-5000 Cordoba, Argentina
[2] Univ Nacl Cordoba, Fac Ciencias Exactas Fis & Nat, RA-5000 Cordoba, Argentina
[3] Univ Nacl Sur, Dept Fis, RA-8000 Bahia Blanca, Buenos Aires, Argentina
来源：
APPLIED MAGNETIC RESONANCE | 2002年 / 22卷 / 03期
关键词：
D O I：
10.1007/BF03166114
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
A combined study of 111 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.
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页码：321 / 334
页数：14
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