NMR study of the spatial effect of polyacrylamide gel upon the water molecules confined in it
NMR study of the spatial effect of polyacrylamide gel upon the water molecules confined in it
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DOI：
10.1021/ja00510a008
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发表时间：
1979-08
影响因子：
15
通讯作者：
S. Katayama;S. Fujiwara
中科院分区：
文献类型：
--
作者：
S. Katayama;S. Fujiwara
通过测定-35 ℃时的自旋-晶格弛豫时间和未冻水量，分析了聚丙烯酰胺凝胶及其交联凝胶中水的状态。结果表明，随着凝胶聚合度和交联度的增加，水的7 j值降低，未冻水的量增加。所获得的结果在很大程度上取决于凝胶的性质，其特征在于凝胶中空间的大小。
Analysis of the states of water in polyacrylamide gel and its cross-linked gel was done by the measurements of the spin-lattice relaxation time 7j and the amount of unfrozen water at-35 C. It was found that the 7j of water was reduced and the amount of unfrozenwater was increased with an increase in extent of polymerization and cross-linkage of the gels. The results obtained much depend on the nature of the gel, which is characterized by the size of space in the gel.