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Report No.
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Structural changes of water in polyacrylamide hydrogels

Sekine, Yurina  ; Tojima, Yu*; Fukazawa, Tomoko*; Fukazawa, Hiroshi

Hydrogels are unique materials that can contain a large amount of water in their three-dimensional polymer chain networks. Because of characteristic properties of water, hydrogels are widely used as biomedical materials. The structure of water is thus an important factor governing the chemical and physical properties of hydrogel materials. In order to investigate the effects of the side groups of polymer on the water structure, we measured the Raman spectra of polyacrylamide and poly-N,N-dimethylacrylamide hydrogels with various water contents. The results indicate that the water structure in the hydrogels depends on the structure of the side groups in the polymer chains.

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