Visualization of Hydrogel Shrinkage Due to Ion Replacement by 27Al and 23Na Magnetic Resonance Imaging
Visualization of Hydrogel Shrinkage Due to Ion Replacement by 27Al and 23Na Magnetic Resonance Imaging
复制标题
27Al 和 23Na 磁共振成像离子置换导致水凝胶收缩的可视化
DOI:
10.1007/978-3-319-01683-2_3
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
S. Stapf
中科院分区:
文献类型:
--
作者:
M. Raue;J. Martins;M. Küppers;T. Mang;B. Blümich;S. Stapf
Ionic hydrogels are polymer networks that have the ability to store large amounts of water. Due to this behavior hydrogels based on sodium acrylate (SA) are mostly used in diapers and soil conditioners. In this work diffusion and exchange processes in polyelectrolyte hydrogels were followed by23Na and27Al magnetic resonance imaging (MRI) techniques. We present23Na and27Al MRI experiments of the replacement reaction in hydrogels (classical superabsorbers, hydrogels with an inherent charge gradient and with a higher charge) as a feasibility study of monitoring the combined diffusion/exchange process as well as the shrinking and local defect growth in macroscopic model hydrogels. It is shown that the contraction of the gel induced by increasing the number of physical crosslinks through aluminum ions is of non-linear nature and takes place in several steps in contrast to high charge-density hydrogels based on acrylic acid and maleic acid.
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影响因子:
5.8
作者:
D. Wood
通讯作者:
D. Wood
影响因子:
6.1
作者:
Aursand, Ida G.;Veliyulin, Emil;Erikson, Ulf
通讯作者:
Erikson, Ulf
DOI:
--
发表时间:
2000
期刊:
影响因子:
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作者:
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通讯作者:
K. Furihata
DOI:
--
发表时间:
2005
期刊:
Journal of magnetic resonance (San Diego, Calif. 1997 : Print)
影响因子:
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作者:
I. Koptyug;D. R. Sagdeev;E. Gerkema;H. Van As;R. Sagdeev
通讯作者:
R. Sagdeev
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
I. Koptyug;A. Lysova;R. Sagdeev;V. Kirillov;A. Kulikov;V. Parmon
通讯作者:
V. Parmon