Evaluation of hydration in a water-soluble polymer by terahertz spectroscopy

In this study, we have evaluated the hydration properties of water-soluble polymers by terahertz spectroscopy. In particular, we focused on polyvinylpyrrolidone which has potential use for a wide range of applications as a biomaterial. The dielectric loss of samples obtained by the terahertz spectro...

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Bibliographic Details
Published in:Applied physics letters 2016-02, Vol.108 (8)
Main Authors: Kawabe, Shunsuke, Seki, Munetoshi, Tabata, Hitoshi
Format: Article
Language:English
Subjects:
Applied physics
Biomedical materials
Dielectric loss
Hydration
Molecular weight
Polymers
Polyvinylpyrrolidone
Spectrum analysis
Water chemistry
Water soluble polymers
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Summary:In this study, we have evaluated the hydration properties of water-soluble polymers by terahertz spectroscopy. In particular, we focused on polyvinylpyrrolidone which has potential use for a wide range of applications as a biomaterial. The dielectric loss of samples obtained by the terahertz spectroscopy was found to strongly depend on the molecular weight of the polymers and the density of the solution. We revealed that the hydration number per monomer depends on the molecular weight of the polymer. It is also deduced that the hydration number is affected by the conformation of the polymer in the solution.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4942411